HomeMy WebLinkAboutHOAG_GENERATOR_BUILDING*NEW FILE*
HOAG_GENERATOR_BUILDING
N
(,N
Districting Map No.
Corrections Required:
ccMMERL/INDUSTRIAL ZONING CORRECTION-
Plan Check No:
Legal Description:
By:Christy Teague, Associate Planner
esa:
Land Use
Lot Block Section Tract
Resubdivision required to combine lots or portions of lots when construction or
alterations are in excess of $20f000.
Covenant required. Please have owner's signature notarized on the attached
document and return to me.
Lot Size
If
Zone ��
Proposed Use --_'1��� 0/V
Required Setbacks
Front O
Right Side
Left Side
FAR WORKSHEET_
Lot area (site area scr.ft.):
sq.ft.
Base Development Allocation (BDA): Comm eq.ft.
[0.5 x site area sq.ft., unless otherwise specified in Land Use Element]
FAR permitted, without variance: (A)
comm
res nka
Square footage permitted:
Comm
res vka eq.ft.
[(A) x Bite area sq.ft.)
Maximum FAR allowed with variance: (B)
comm
res Pka
Maximum square footage allowed:
Comm
res sq.ft.
[(B) x site area sq.ft.]
PROPOSED DEVELOPMENT:
(C) Base FAR use sq.ft.
sq.ft.
(D) Reduced FAR use sq.ft.
sq.ft.
(E) Maximum FAR use sq.ft.
Bq.ft.
(F) TOTAL SQ.FT. [C+D+E]
sq.ft.
PROPOSED FAR:
[ F
-.site area sq.ft. ]
PROPOSED WEIGHTED DEVELOPMENT:
FAR Use Category Weighting
Factor
Weighted Sq.Ft.
(G) (H)
( G x H 1
sq.ft. Base X
1.00
sq.ft.
--sq.ft. Reduced X
1.67
sq.ft.
':aximum X
0.50
sq.ft.
I, WTI ,'73ED :;Q.F'.'• itnay not exa rqd 731} .)
Pro-idc tiss+Ae ove..lay of cRiculations t verify provided square footage.
7 -. Required Pefrkiug
Proposed parking (Indicate number of stalls provided)
Total On -Site Parking
Standard _ Compact
In -lieu Parking
nimension buil ing ,ig as measur d from tural grog to avepg ; aximum./_
of height Gf- �/edL n_
L_
oShow natural ge line on all elevations a ~
^--J@7�-- Show all rooftop mechanical equipment and dimension froo grade directly below.
Indicate location of trash containers on site plan.
Number of Stories
Floor Plan fully dimensioned showing all room uses.
Plot Plan fully dimensioned showing location of all buildings, fences, etc. in
relation to the property line.
Fair Share Contribution
San Joaquin Hills Transportation Corridor Fee
SPSCIAL APPROVAL REQUInI THA02
Please indicate any discretionary approval numbers on the plans and incorporate
the attached; excerpt of minutes and list of findings and
condition■ into the blueline drawings
approval letter into the blueline drawings
Modifications Committees Indicate Approval No. on gluelines
Modification required for
planninc Ga-miseion/Gifu Council:_
Uee Permits No._
variances No.
unatihdivision/Tracts No.
Site Plan Reviews
Amend
m
Other
Publ;c W2V
_ Easement/Encroachment Permit
Subdivision Engineer
Traffic EonY
Approval off Landscape Plane
Buis ag Departments
_ Grading Engineer
garke Departmentnd:
Plana
_ Approval of Lascape
Approval In Concept (AIC) No.
(Notes File 3 sets of planes site, floor, and e
Coastal Development Permits
fect o. Dates
Waiver/Exemptions No.
0 E_ffffeective/Tes
REMARKSs
.
VIA
NOTES xt is the responsibility of the applicant to air:a�.t�. their plans m"4
obtain the necessary approvals from the uepao eentocndok'_-H at(?14 -1-oveo
t you
have questions regarding your application, Please
44-
3200.
FORMS\COMN—ZON.COR Rev. 2/94
nA -,
DATE C�
Q MAYOR ❑ CITY COUNCIL
Q CITY MANAGER ❑ FIRE
Q DEPUTY CITY MGR. Q GENERAL SERVICES
❑ ATTORNEY ❑ LIBRARY
Q BUILDING Q MARINE
❑ CTTY CLERK ❑ PARKS & REC.
Q FINANCE -ADMIN. Q PERSONNEL
Q ACCOUNTING Q PLANNING
Q DATA PROCESSING Q POLICE
Q DUPLICATING ❑ PUBLIC WORKS
Q PAYROLL Q TRAFFIC
PURCHASING Q UTILTIIES
REVENUE Q TELECOMM.
FOR- Q ACTION & DISPOSITION
Q FILE
Q INFORMATION
Q REVIEW & COMMENT
RETURN �
03
RECEIVED 130
TRANSMITTAL- PLANNING DEPARTMENT
CITY OF NEWPORT BEACH
MAR 27 1997 PM
2220 UNIVERSITY DRIVE, SUITE 200 7 $jgj1pjUj12jh%3i4A6 .
NEWPORT BEACH, CALIFORNIA 92660 LW
TAY L O R
714 574 1325 FAX 714 574 13b8 . a $ ASSOCIATES
trRCNITECTDRE AND INTERIOR DESIGN A R C H I T E (I S
I
j
TO DATE.
CITY OF NEWPORT BEACH - PLANNING March 25, 1997 O
1 PROJECT NUMBER. 1 ,
3300 Newport Boulevard I 1020A ID
PROJECT
Newport Beach, CA 92663 _ s HOAG MEMORIAL HOSPITAL PRES.
r `
ATTENTION: Gina Garcia EMERGENCY GENERATOR BUILDING
'
WE ARE SENDING YOU VIA Y THE FOLLOWING REMS:
U.S. Mail
PRINTS _ORIGINALS _X_ OTHER (SEE DESCRIPTION BELOW) '
NO. OF ITEMS DATE DESCRIPTION - I
1 ' 12/5/95 Acoustical ,Report from McKay, Conant, Brook.
THESE,�RE TRANSMITTED AS CHECKED BELOW: `
FOR APPROVAL _)(_FOR YOUR USE T_AS REQUESTED FOR REVIEW AND COMMENT
REMARKS:
Gina:
Here is 8 copy'of the Acoustical Report for your files, as requested.
Thanks.
COPYTO.File FROM: Gary Simmons
0 0
Mc KAY
CONANT
BROOK INC RECEIVED
Consultants in Acoustics and Media Systems
Ronald L McKay
David A Conant
Rollins Brook
6 December 1995
Gary E. Simmons, Architect DEC 0 7 1995
Taylor & Associates, Architects
2220 University Drive, Suite 200 TAYLOR & ASSOC. ARCHITECTS
Newporc Beach, CA 92660
Subject: Hoag Hospital Emergency Generator Replacement: Preliminary Noise,
Control Recommendations for Inlet, Discharge and Exhaust Openings.
Dear Gary:
Further to our recent telephone discussions, we are pleased to enclose our preliminary
recommendations for noise control for the generator -building inlets and outlets. We would
comment as follows:
1. Design Noise Criterion
The design noise criterion defined in the Community Development Plan for this project
is 55dBA at any nearby property line, irrespective of the time of day.
Generator noise impacting the hospical tower is also of concern (in order that patients
are not unduly disturbed during generator testing). We recently visited the site and
measured levels of approximacely 55dBA outside the facade of the hospital cower. It is
our opinion that 55dBA would be an appropriate design criterion to adopt for generacor
noise incident on the exterior of the cower.
2. Discharge Shaft "Caps"
As discussed in our fax of 20 November 1995, we would strongly recommend chat the
cops of the discharge shafts be "capped" as you suggested at our meeting. This
significantly reduces the silencer requirements (by directing noise away from sensitive
property lines), in addition to procecring the silencers from the elements (Detail 1,
enclosed, shows the general design intent).
3. Manufacturers' Noise Data
We received the following noise data for the proposed generators (Caterpillar 3516,
1750kW units) from your office on 30 October 1995:
Sound Pressure Level. at Distance
Shown, dB re.'2 x 10'S: Pa.
Od'fave,Band'C6ritek.Frequency.(Hz)•
.63 • .
125
,:250.'
" 500'
.:1k ..
.2k.
Ak
: -8k•'
Caterpillar 3516: Exhaust @ 4.9 ft.
105
106
112
111
108
108
108
106
Mechanical @ 3.2 ft. (no fan)
100
102
98
99
101
99
95
90
5655 Lindero Canyon Road Suite 325
Westlake Village CA 91362
818 991 9300 Fax 818 991 2324
M`KAY
CONANT
HOAG Hospital Emergency Generators BROOK Luc
5 December 1995
Page 2
We understand that the standard Caterpillar radiator/fan will be replaced by a Young
unit which will be exactly the same as those previously used in the Harbor UCLA
project. Along with this Caterpillar data, we received the following noise data for the
proposed Young fan/radiator unic:
Souad.Pressure Level at.25'•ft.•frbm Octave• rand' Centex Frequency (Hz)
Fan Ring Edge;. dB re . Z x' 1'0's Pa 63 125 250 '500 Ik 2k 4k• : • '8k'
Young 7.75 ft. diameter, 78 74 69 63 60 1 58 52 45
55605 cfm fan, @ 1" w.g.
4. Mode of Operation & Testing
We understand that a maximum of four generators will be in operation at any one rime,
and that the fifth generator will function only as a standby unit. If five generators run
together at any time, noise levels will increase by only 1dBA (one dBA).
5. CFM Figures
The standard Caterpillar unic wich its factory-ficted radiacor and fan is listed as having
an inlet airflow requirement of 81,000cfm per unit (plus 5724cfm per unit for
combustion air at the inlet only). We understand, however, chat when ficted with the
Young radiator units, each generator draws only 55605cfm (in addition to 5724cfm
combustion air), giving a cocal of 245,316cfm inlet air for 4 units, and 55605cfm per
discharge shaft. For our analysis, we have assumed that the Young radiacors/fans will
definitely be used in the design, since we understand chis to be the case, and since this
option is acoustically far superior to using the Caterpillar radiator/fan option.
a. Inlet:
The proposed cross -sectional size of the bank of inlet silencers is 56 ft. x 7 ft.,
giving a face velocity of 630fpm wich the Young radiators/fans.
b. Discharge:
Each discharge shaft has a proposed cross -sectional area of 100 sq. ft., thus giving
a face velocity of 560fpm with the Young radiacors/fans.
HOAG Hospital Emergency Generators
5 December 1995
Page 3
6. Noise Control
M`KAY
CONANT
BROOK we
Due to the extremely sensitive nature of this project, it is vitally important that
acouscicalty-inferior products are not substituted for those suggested below. Any
proposed substitutions should be submitted for our approval.
a. Inlet Duct Silencers
We recommend that the inlet silencer bank be constructed from silencers
equivalent to IAC type 5ES (see enclosed catalog cut). The published static
pressure drop figure for these silencers at a face velocity of 630fpm would be
approximately 0.07" w.g.
b. Discharge Duct Silencers
We recommend that a 10-fooc silencer equivalent to IAC type 10L be installed
in each discharge shaft (see enclosed catalog cut and Derail 1). The catalog static
pressure drop figure for each of these silencers is approximately 0.05" w.g. at a
face velocity of 560fpm.
C. Exhaust Muffler
We recommend an exhaust muffler equivalent to a 14" diamecer-inlec Nelson
400. The "Maxim M-51" muffler originally proposed in your initial transmittal
would not be acoustically adequate.
d. Acoustical Lining
Inside the generator building, the walls and the underside of the roof should be
completely covered with 4"-chick acoustical lining equivalent to Schuller '
Linacoustic R-300 (see catalog cut sent with our fax of 20 November 1995).
The inlet plenum between the room roof opening and the inlet silencers should
also be similarly lined, as should the discharge shafts. For the proposed location
of the lining, please see enclosed Derail 1. The lining opposite the radiator fan
at the bottom of each discharge shaft may be protected by a perforated metal
liner if this is required to stop tearing and erosion by the large incident airflow.
The liner should have a minimum 35% open area and should be no thicker than
20 gauge.
M` KAY
CONANT
HOAG Hospital Emergency Generators BROOK we
5 December 1995
Page 4
7. Building Construction
a. Walls and Roof
We would reiterate our recommendation that the walls and roof be constructed
from concrete with a minimum weight of 100 lb./ sq. ft.
b. Doors and Interior Walls and Windows
We will make recommendations for doors and interior walls and windows in due
course.
We crust chat the above information is adequate for your currenc needs. We will calculate the
acoustical requirements for the items listed in section 7.b, above, and will forward our
recommendations within the next few days. If you have any questions in the meantime, please
do not hesitate to call.
Yours sincerely,
M`KAY CONANT BROOK iNc
Macchew rooke, Ph.D.
Consultant
MB:sk
Enclosures
cc: Mr. Toshio Okajima, P.E. - J. L. Hengstler Associates
Mr. Russ Givens - R. E. Wall & Associates
4o LA&H .
zkv'AaSY mtkmo Est
E&%At,f _ 1-6 fjeLSw►
4dM •N/ if % I.JLEr
.A
•GEN
GENERATOR PAD
41, ootmG. May %---,
8E f e mt lai> 6Y
fctfa T,av M&-004, x
1 f r�ss,4LY (r+w ss•6 �
ROOM
SIV0►0S X
SWA19 TV
ELECTRICAL I.II:
scoma•N 15KOVI n1G tavf&%+�QNDEfl Loco'nxrt4S
of NCISF JlAljjG -nct! MLrAStAWXS
—:L /�/,�
(y#
Type L Quiet -Duct Silencers have been rated with procedures certified
in accordance with applicable portions of ASTM E 477. All Dynamic
Insertion Loss and Self -Noise Acoustic Performance Data were ob=
talned in IAC's Aero-Acoustic Laboratory using the duct -to -room
reverberant test facility with air flowing through the silencers.
• Forward Flow (+) occurs when noise and air travel in the same
direction, as in a typical supply or fan discharge system.
• Reverse Flow (—) occurs when noise and air travel in opposite
directions, as in a typical return or fan intake system.
For other IAC Rectangular Silencers and Tubular Conic -Flour'
Silencers, see Application Manual. Use SNAP FORM for System Noise
Analysis Procedures and PRESS FORM for cost optimization and Pick.
ing the Right Energy Saving Silencer.
HOW TO DESIGNATE TYPE L
QUIET -DUCT MODELS AND SIZES
EXAMPLE:
Model
/—Cf u 11181---\
Length, L Type Width, W Height, H
(Feet) L (Inches) (inches)
TABLE I DIMENSIONS AND WEIGHTS OF L SILENCER MODULES
46
�i21
_2ai8'
tilq48:
;24;j'30;
b38
,42}
t48F
i18
524
:30;
:38_
�42;')24g
t30
%i2;
i48;
c30
".p9B1
%4$;
�42':
4H,T'fn,,,•`',�2
48'Wt,
Ib
24
33
43
52
62
74
83
93
71
86
102
117
132
147
121
143
163
184
205
182
209
235
261
I
Wt, Ib
41
56
73
89
107
125
141
158
121
147
173
204
230
256
211
245
279
312
346
312
353
395
438
Wl, Ib
59
78
102
125
150
176
199226
170
207
243
288
325
362
286
351
398
445
492
—
—Wt,
lb
81
111
155
177
212
250
—
—
241
293
345
405
—
—
—
—
—
—
—
—
—
—
NOTE (—) Indicates size not available as standard.
TABLE 11 DYNAMIC INSERTION LOSS IDIL) RATINGS: FORWARD (+)/REVERSE (-) FLOW
; j
Octa'`- v'"e Ban
ice'-,
E: k3
-T+' 4"•'cr.'-�s `' c5
6,
_;
a3''
�.
?i:ti00`.i(r
41<BTC
AC
w Model
Ilenc_e,,IV ..
`e-loci
Dyna Ic IRse toL :is
d8
Ntlrrl er
fpm
- 5000
7
9
11
16
25
18
13
7
3L
-2000
5
6
10
15
25
19
13
8
+2000
4
5
9
14
23
24
14
10
+5000
3
4
7
12
21
25
16
12
- 5000
9
11
15
24
31
32
17
10
5L
-2000
7
8
14
23
31
33
17
11
+2000
6
7
13
21
29
39
20
14
+5000
5
6
11
19
27
39
20
15
- 5000
11
17
20
31
43
40
24
14
% L
-2000
8
14
19
30
43
41
24
15
+2000
8
13
18
28
40
47
26
18
+5000
7
9
16
27
38
47
27
19
- 5000
12
22
27
41
50
50
34
20
10L
-2000
10
19
26
40
49
50
34
21
4,2000
18
25
38
35
24
10
14
23
38
47
50
2
+5000
NOTE: All OIL and Sell•1,1013e Acoustic Performance Data were obtained In IAC's R&D Laboratory using the duct•lo•room reverberant lest faclllly with
at, flowing through the silencers. Sae reverse side for Self•1,1013e and Aerodynamic Data.
ALSO SEE REVERSE SIDE FOR NOTE ON WHEN DILS EXCEED 50 d8
TABLE III AERODYNAMIC PERFORMANCE DATA OF L SILENCER MODULES
Ask Aide,
dIcH�D
tc
o'de
f eaau
K0io _ g
omhe
�
A 8 0_tf3
0�
40
TQ -
$ 0.90•
Siz
S e
{
0.64
U`
0
ED on
,d.2V0,02
QO
It
If 0-
6 x 12
0.5
f,FGE va
500
7101
875
1000
1125
1235
1420
1590
1750
1950
2250
2520
12 x 12
1.0
1000
1420,
17
12 x 18
1.5
3
3375
3705
4260
4770
5250
5850
675
50
12x 24
2.0
2000
2840
.3500
4000
4500
4940
5680
6360
7000
7800
9000
10050
12x30
2.5
2500
3550
3875
5000
5625
8175
7100
7950
8750
9750
11250
12600
12 x36
3.0
c
3000
4260
5250
6000
6760
7410
8520
9540
10500
11700
13500
15100
12 x42
3.5
3500
4970
6125
7000
7875
8645
9940
11130
12250
13660
15750
17600
12x48
4.0
m
a
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100•
24 x 18
3.0
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
24 x24
4.0
00
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100
24 x30
5.0
GO
5000
7100
8750
10000
11250
12350
14200
15900
17500
19500
22500
25200
24x36
6.0
°•
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
24x42
7.0
7000
9940
12250
14000
15750
17290
19920
22240
24500
27300
31500
35200
24x48
8.0
0
8000
11360
114000
16000
118000 1
19760 122800
25400
128000
131200
36000 140200
36x 24
6.0
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
38x30
7.5
1
7500
10650
13130
15000
16880
18520
21300
23850
26250
29250
33750
37720'.
36x36
9.0
-'
9000
12780
15760
18000
20250
22240
25560
28820
31500
35100
40500
45270
36x 42
10.5
c
10500
14910
18380
21000
23630
25940
29820
33400
36750
40950.
47250
52820
36 x48
12.0
F
12000
17040
21000
24000
27000
29640
34100
38200
42000
46800
54000
60400
48 x30
10.0
10000
14200
17500
20000
22500
24700
28400
31800
36000
39000
44000
50300
48 x38
12.0
12000
17040
21000
240dO
27000
29600
34100
38200
42000
46800
54000 160400
48 x42
14.0
14000
19880
24500
28000
31500
34580
39840
44480
49000
54600
63000 170400
48 x48
16.0
16000
22720
28000
32000
36000
39520
45600
50800
56000
62400
72000 180400
NOTE 1: For module availability see Table 1. '
NOTE 2: Alrllow, ratings for the 12 In. x 12 In. size, shown with blue overprint, represent both cim per sq It and silencer face velocities In Ipm. A useful concept in selecting
multiple module silencers.
NOTE 3: The tabulated air flow is In Win based upon tests conducted In the IAC Research 6 Development Laboratory Facilities in accordance with applicable AMCA, ASME,
and ADC Alrllow Test Codes. These codes require specilled lengths at straight duct both upstream and downstream for the test specimen. The downstream measurements
are made let enough downstream to Include "static regain". Therefore. If silencers are Installed Immediately before or after elbows, or transitions, or at the Intake or
discharge of the system, sufficient allowance to compensate for these factors must be included when calculating the aperallng static pressure lass through the silencer.
These conditions can add from 112 to several velocity heads, depending on speclllc conditions. All acoustic and aerodynamic data obtained on 24 In. x 24 in. production units.
LE IV SELF -NOISE POWER LEVELS, d8 to- 10-12 WATTS
,Ocia've Band
;ice
2-, w3
4 w
si?$
6
s
8:r
Lfz�
83$
ti125 _250j
,500;•
j1K;
S21Z�'
; eK:
Modeal'
"SflendeF. a`c�e
M
Self: o satpower-L_evets.dB.
M
tN_umbeg
;:,Ve oclt7F;,f�_
. ,ty75f�8a
- 5000
74
67
67
73
65
67
73
78
-4000
69
63
63
68
63
64
68
69
L
-3000
64
59
58
62
60
62
62
58
- 2000
55
52
52
53
56
56
53
43
All
- 1000
41
41
41
38
49
48
38
(20
Sizes
+ 1000
38
31
37
32
32
36
24
(20
+ 2000
57
51
51
49
47
50
44
35
+ 3000
68
63
59
60
56
58
56
50
+4000
76
71
65
66
62
64
64
59
+6000
82
77
70
72
67
69
71
67
TABLE V FACE AREA ADJUSTMENT FACTORS
Add or subtract from PWL values above
QilieROuct
'F,ece�?�t, ai�g
OS
1
2
4
8
16
32
64
128
,+tWL__ us
Facto , 404 � ;: kK
-9
-6
-3
1 0
+3
1 +6
+9
+12
+15
'Far Intermediate face areas, interpolate to nearest whole number.
c
THE SiNIpA110 Of safHCE
WHEN DIL REQUIREMENTS EXCEED 50 d6
• Noise flanking around the silencer or along duct silencer
walls may limit actual performance to approximately 50
d8 Dynamic Insertion Lass for many systems.
• Self•Nolse Interference should be checked out especially
for systems with high noise reduction requirements.
• Specially designed silencers and full-scale or scale -model
testing are available for applications requiring silencing
in excess of 50 dB or other unusual requirements.
• Cali your local IAC Representative for details.
CONVERSIONS
Mulliply
By
To Obtain
clm.......
4.719 x 10-4
cubic meters per second (m3last)
Ipm.... ...
a ad=
meters per Second (Ma)
In.........
25.4
mUllmaters (mm)
i.w.g.......
249.1
Nawtons par square meter (NIm2)
It.........
0.3Ms
motors(m)
112........
0.0929
square meters (m2)
lb.........
0.4635
kilogram (kg)
OIL" Salt -Noise. and AlNlow Data CERTIFIED In accordance with ASTM E-477
We reserve the right to Improve design and specifications without notice at any time.
AVAILABLE UPON REQUEST: Specially designed silencers and full-scale or model testing for unusual applications.
NOTE: PAGES 5 THROUGH"52.OF THIS CATALOG AREA VAILABLE
AS INDIVIDUAL.SHEETS.'Mi5 I INDUSTRIAL ACOUSTICS COMPANY,
REQUEST BY NUMBER SHOWN IN UPPER RIGHT'HAND CORNER.
El
Type Es Quiet -Duct Silencers have been rated with procedures cer-
tified In accordance with applicable portions of ASTM E 477. All
Dynamic Insertion Lass and Self -Noise Acoustic Performance Data
were obtained in IAC's Aereacoustic Laboratory using the duct -to -
room reverberant test facility with air flowing through the silencers.
e Forward Flow (+) occurs when noise and air travel in the same
direction,. as in a typical supply or fan discharge system.
e Reverse Flow (—) occurs when noise and air travel in opposite
directions, as in a typical return or fan Intake system.
For other IAC Rectangular Quiet -Duct Silencers and Tubular Conic.
Flows Silencers, see Application Manual. Use SNAP FORM for
System Noise Analysis Procedures and PRESS FORM for cost op.
Utilization and Picking the Right Energy Saving Silencer.
DI
9
in
0
0
in
U
8 0
FREQUENCY, Hz
ACOUSTICAL EFFICIENCY
HOW TO DESIGNATE TYPE Es —
QUIET -DUCT MODELS AND SIZES
EXAMPLE:
Model-
5Es 24 18]
Length, L TypeWidth, W Height, H
(Feet) Es (Inches) (Inches)
ACOUSTICAL EFFICIENCY PLUS ENERGY SAVINGS
For many years, the IAC Type S Quiet -Duct Silencer has
been the industry standard for maximum noise reduc.
tion with minimum silencer length. The Type Es 'Energy
Saver' Silencer provides the same high level of acoustic
performance combined with a marked decrease In energy
consumption. See additional details on reverse side of
this bulletin.
TABLE I DYNAMIC INSERTION LOSS (DIL) RATINGS
nd�12°�31
500ISienter
Mos
aql,
.Tyer;
a
a oc XJfp
aumd+7CVa.R�S
omit:
neartlomLoss,
�
B.
3Es
- 2000
6
10
19
29
36
34
23
15
5Es
- 2000
11
19
24
40
52
49
27
17
7Es
-2000
11
21
40
53
54
54
38
24
10Es
- 2000
14
30
40
57
58
56
47
29
- 1000
11
17
23
39
50
49
32
2
Es
-
10Es
- 1000
12
31
44
54
55
56
50
31
3Es
+ 1000
4
8
15
25
34
34
24
17
5Es
+ 1000
8
13
20
35
50
49
36
24
7Es
+ 1000
8
18
35
48
54
53
46
32
10Es
+ 1000
10
26
42
55
54
57
51
38
3Es
+2000FIE2
13
23
32
34
24
78
5Es
+2000
19
33
48
49
36
25
7Es
+200032
46
54
51
48
34
1OES
+ 200039
55
54
57
52
41
(+) Forward Flow (-) Reverse Flow
NOTE Noise Ilanking around the silencer or along duct walls may limit performance to
approximately 50 de OIL for many systems. Specially designed silencers and lull•acale or
scale model testing are available for appllcatlons requiring in excess o15o dB OIL Call us
for details.
N 4e
e"`ee`e\
0
u
w 20
i Type Es Compared to
Type S with same sidlow,
w le lace velocity, and length.
a.
LENGTH. Fr
ENERGYSAVINGS
TABLE II SELF -NOISE POWER LEVELS, dB re: 10-12 WATTS
:Oc`ta es e'n"7r'
j2
�y ��„6
;',8'"7�
jcdel:
m,S
lance -Co._
___Ipc ,
owe
ei s B
- 2000
58
54
58
60 61
65
69
64
Es
ES
- 1500
47
47
52
55 57
63
64
54
- 1000
41t45
47 52
60
48
38
+ 1000
4233
32 34
33
27
22
SIZESAll
+ 1500
5044
41 43
45
43
41
+2000
6054
50 49
53
53
50
(+) Forward Flow (-) Reverse Flow
Face velocity Is determined by dividing clan by silencer lace area In sq It.
Interpolate OIL and Self -Noise for Intermediate velocities.
TABLE III FACE AREA ADJUSTMENT FACTORS
Self -Noise Power Levels listed above are referenced to a silencer
face area of 4 sq ft. For other areas, add or subtract the following:
'QuldttD'u`ct'
iFac- Ce ` 0.5
1 1
2
4
1 8
1 16
1 32
64
128
1'g si I
:Foe or, B - 9
- 6
- 3
0
+3
+6
+9
+12
+15
-For Intermediate lace areas, Interpolate to nearest whole number.
SIDS 12.2
> . . -TABLE IV PHYSICAL AND AERJWAMIC PERFORMANCE DATA OF Es SILENM MODULES
=Model;Ntlmber2
as
DZf
i jy'
om a
o u
SI once
082M 1
4
,6ES0
7C.05711
52
WI
ton
10
I8a! B1• 8� 9>♦ 9i
,RR
1130i A01ti 541R
is
S9 F3iW.si'
r[llov
11 �c
fitlL•
�..12
6 x 24
6 x 38
671 751 822 919 1082 1187
1343 1501 1844 1838 2123 2374
467 275 3184 3560
0.50
1.00
1.50
22
35
49
40
63
55
88
77
123
171
237
475
717-
338 411
871 822
475
949
1424
531
1062
1592
581
1163
744
12 x
33
56
78
111
475
877
822
949
1082
1163
1343
1501
1644
1838
2123
12x
12 x 24
12 x 30
12 x 38
12 x 42
12 x 48
2.00
2.50
3.00
3.50
4.00
52
62
74
83
93
89
107
125
141
158
125
150
176
199
226
177
212
250
-
-
949
1187
1424
1662
1899
1343
1678
2014
2350
2685
1644
2056
2467
2878
3289
1899
2374
2848
3323
3798
2123
2654
3184
3715
4248
2328
2907
3488
4070
4651
2685
3357
4028
41
5371
3002
3753
4504
5254
6005
3289
4111
4933
5756
6578
3677
4598
5516
6435
7354
4246 4747
5307 5934
6369 7121
7430 8308
8492 9494
24 x 18
24 x 24
24 x 30
24 x 36
24 x 42
24 x 48 1
3.00
4.00
5.00
6.00
7.00
8.00 1147
71
86
102
117
132
121
147
173
204
230
256
170
207
243
288
325
362
241
293
345
405
-
-
1424
1899
2374
2848
3323
3798 1
2014
2685
3357
402E
4699
5371
2467
3289
4112
4933
5756
1 6578 1
2848
3798
4747
5697
6646
7595
3184
4246
6308
6369
7430
8492
3488
4651
5814
6977
8140
9303
4028
5371
6714
8056
9399
10742 1
4504
6005
7506
9007
10508
12010
4933
6578
8222
9867
11511
113156
5516
7354
9193
11031
12870
14708
6369 7121
8492 9494
10615 11868
12738 14242
14861 16615
16984 18989t
36 x 30
38 x 36
36 x 42
36 x 48 1
7.50
9.00
10.50 1182
12.00 1204,
142
162
249
284
319
355
-
-
-
-
-
-
-
-
3560
4272
4985
5697
5035
8042
7049
8056
8167
7400
8633
9867
7121
8545
9969
11393
7961
9553
11145
12738
8721
10465
12210
13954
10070
12084
14098
16112 118014
11259
13511
15762
12333
14800
17267
19734
13789
16547
19305.
22063
15922 17802
19107 21362
22291 24923
25476 28483
NOTE 1: Individual modules can be assembled In multiples to build silencer'banks' of
sixes other than those listed above Alrllow capacity of any silencer bank Is Iles sum of
Capacities at Individual modules.
NOTE Z Alrllow, ratings for the 12 In. x 12 In. size, shown with blue overprint, represent
both elm per sq it and silencer face velocities In Ipm. A useful concept In saleCling multi•
ple module silencers.
NOTE 0: The tabulated alrllow is In elm based upon tests conducted in the IAC Research
a Development Laboratory Facilities In accordance with applicable AMCA, ASME. and
I ENERGY CONSUMPTION
ADC Alrllow Teal Codes. These codes require specified lengths of straight duct both
upstream and downstream tar the lost specimen. The downstream measurements are
made far enough downstream to Include -static regain.' Therefore, If silencers are In.
stalled Immedlately before or after elbows, or transitions, or at the Intake or discharge of
the system, sufficient allowance to compensate for these factors must be Included when
calculating the operating stalk pressure loss through the silencer. These conditions can
add from 1/2 to severe/ velocity heads, depending on specific Conditions (sos IAC Dole
Shaer SOS 9). All acoustic and aerodynamic data obtained on 24 In. x 24 In, production
units.
At a -',,an airflow, lower silencer pressure drop means lower fan horse-
po%- fqulrements and lower system operating costs. Accordingly, sl-
lenc....x for air conditioning applications are usually selected for a
pressure drop of approximately 0.5 In H2O or less.
This chart can be used to determine relative differences between In-
Itlal cost and long-term energy consumption operating costs for any
Type Es Silencer at a specific airflow.
Example Comparing Two Es Silencers with Different Dimensions:
Case I
Case II
Size
24" x 42"
24" x 48"
cfm
10,500
10,500
Pressure Drop,i.w.g.
0.5
0.38
Relative Initial Cost Index
1.2
1.4
Relative Operating Cost Index
5
3.8
Total Relative Cast Index
6.2
5.2
In this case, it pays to use the larger silencer. Operating cost savings
more than offset higher Initial costs.
In practice, analysis of energy consumption costs should be made for
all IAC Silencers which meet DIL requirements. Pressure drop and
energy consumption can be reduced by increasing silencer face area (as
In the above example) or by using lower pressure drop IAC Silencers. For
detailed energy saving silencer selection strategies and comparison of
energy usage characteristics of Type Es Silencers with other Ouiet-
Ducte Silencers, see PRESS FORM Selection Guide.
2. RELATIVE OPERATING COSTS ARE BASED
ON 50% UTILIZATION RATE, 80% FAN EFFI-
It CIENCY.MUST
ETAOJUS ED ACCORDINGLY
10
10
10 ES
x
w 8
x
Z
/INITIAL
687Es
Uw
CO
g
3 ES
SILENCER STATIC PRESSURE DROP - IN. H2O
Relative coat Indices are approximate and for preliminary evaluation
only. Consult IAC for exact analysis on specific applications.
CONVERSIONS
Multiply
By
To Obtain
Multiply
By
To Obtain
WE RESERVE THE RIGHT TO IMPROVE
elm.......
4.7.0 x 78 4
3
cuter meters per second (m Isec)
I1.........
0.3048
meters m)
( DESIGN AND SPECIFICATIONS
fpm.......
0.00508
molars per second (mis)
I12........
0.0929
square meters (m21 WITHOUT NOTICE AT ANY TIME.
I,. .......
25.4
millimeters (MM)
lb.........
0,4535
kilogram (kg)
......
249.1
Newtons par square meter (NIm2)
M
t:•�
NOTE: PAGES 5 THROUGH 52 OF THiS CATALOG ARE AVAILABLE
AS INDIVIDUAL SHEETS FROM INDUSTRIAL ACOUSTICS COMPANY.
REQUEST BY NUMBER SHOWN iN UPPER RIGHT HAND CORNER.
R-M W
Falco Associates
97-1074
21 May 1997
ROM 714 574 L 8 07.15.97 10:58 P.03 *TAYLOR ASSOC
RE {VED *Paleontology
History lo9Y
History
MAY 2 2 1997
23392 Madero, Suite L
TAYLOR & ASSOC. ARCHITEC'>;S Mission Viejo, 92891
(714) 770-8042
FAX (714) 458-90$$
Mr. Neal Rinello
Taylor and Associates Architects
2220 University Drive, Suite 200
Newport Beach, California 92660
G
RE: Hoag Generator Addition, Paleontological Monitoring and Mitigation
Architect Project 91020,10
Dear Mr. Rinello:
Thank you calling RMW Paleo Associates, Incorporated. We are pleased to offer this proposal
for the paleontological mitigation at the Hoag Generator Addition. The Hoag Hospital is
underlain by Pleistocene (10,000+years ago) marine terrace deposits and the Miocene age(10-5
million years ago) Monterey Formation. Both of these geologic units have produced a variety of
both terrestrial and marine fossils from the Newport Beach area. In 1989, RMW Paleo
Associates collected a well-preserved right femur of an extinct Bimm in addition to fossil snake
vertebrae, rodent teeth, turtle plates, and bird remains. Marine fossils are represented by oyster,
snails, clams, and abalone.
Paleontological services will consist of attendance at the preconstruction conference, preparation
of required documents, visits to the site during grading operations, the salvage of significant
fossils exposed by grading, a final report, and distribution of fossils to the Orange County
designated repository. All services will be charged at $37.00 per hour.
It is our understanding that the duration of this project is expected to be two weeks. This
proposal is based on 10 days of observations. If the project is extended and additional monitoring
is required, an augment to this contract may be necessary.
TRANSMITTED FROM 714 574 It
07.15.97 10:56 P.04 *TAYLOR ASSOC
97-1074•
Hoag Generator Addition
page 2
Task.
Attendance at the pre -construction conference and preparation of required
documents...................................................................................... $296.00
Monitoring, 4 hours per day x 10 days ............................... :.......... $1480,00
Project Management, 5 hours ................................................. I ... ....$185.00
Laboratory.Analysis, includes preparation of fossils to the point of
identification, and distribution of fossils to the designated repository
(estimate only, as we do not know what fossils will be collected)
10 hours.........................................................................................$370.00
Final Report (estimate only) 24 hours.............................................$888,00
Total Costs for 10 days of Grading S3219:00
The salvage of significant fossils which cannot be removed during the.time allotted to monitoring
is not included in this proposal. That type of salvage will be handled on an item by item basis, and
will be coordinated with the project manager. Cost estimates can be supplied at the time of
discovery. Supplies will be billed at cost plus 5%.
RMW Paleo Associates, Incorporated carries Commercial General Liability with $2,000,000
Emits, Automobile Liability for hired and non -owned autos with $1,000,000 limits, Workmen's
Compensation, and $250,000 Professional Liability Insurance.
We are looking forward to working with you on this interesting project. Ifyou•have any
questions about this proposal, please contact us. Ifyou find the services and costs outlined
acceptable, please sign the work authorization below and return a copy to our office.
Respectfully,
Marilyn Mo g Prtin p
Work Authorization
Authorized Signature Date
TRANSMITTED FROM 714 574
07.15.97 10:58�P.02 *TAYLOR ASSOC
1710ag Memorial
one iwaa ro Box atoo
N.vpon amchmm cn gaaia-also
rhone 714/6458600
June 30,1907
RUW PalsoAmdatm, Tao.
29802 Madero, Suite L
Mission Vino, California 92691
Attention
Relbreace:
Subject.
Dear Ms. Morgan:
Marllyr Morgan
Hoe; Project 1251.88
� e y
CC(a pV
Authorization to Proceed
.—Pip
p
/' v fi
J 1 i"dma'
Central Plant LVgrade deneratm
This letter will carve ss your ibrmal Aathmisation to Proceed, as of June 30,1997, with the
paleontological mitigation services for the Central Plant Upgrade Gaaerators pre jet.
All work shall be completed In accordance with your proposal dated May 21,1997. Compensation for
services shall be billed for time at scheduled rates act to escead Three Thouasad Two Hundred
Nbwtsea Dollars ($3,219.00). Materials and raimbuzzables shall be invoiced separately at omm We
will send you a copy of the purchase order number and invoicing inrtsuctions within tan working days
ofacqublog appropriate admin stradve approval signatures.
We look forward to working with your company towards suatasful ccrapletion of this pr(dect. Uyuu
have any questions, please contact ma at (714) 648.8901.
Sincerely.
Leif N. T)u=pson, AIA
Via President
radlittae Design & Construction
LNT: gl
8oi rf6L00.14L144WWFALW
NOW�IOIrT COYYfJM,TT a0/}ITA� AGCerO17iO W TNr JOW MIMIWON ON AeMOtTAMON OF Em
vw�w.•.
' rr+�
i
TO: r y��
DATE
s❑ MAYOR
❑
CITY COUNCIL
+ ❑ CITY MANAGER
❑
FIRE
❑ DEPUTY CITY MGR.
❑
GENERAL SERVICES
❑ ATTORNEY
❑
LIBRARY
❑ BUILDING
❑
MARINE
❑ CITY CLERK
❑
PARKS & REC.
❑ FINANCE — ADMIN.
❑
PERSONNEL
❑ ACCOUNTING
❑
PLANNING
❑ DATA PROCESSING
❑
POLICE
❑ DUPLICATING
❑
PUBLIC WORKS
❑ PAYROLL
❑
TRAFFIC
❑ PURCHASING
❑
UTILITIES
❑ REVENUE
❑
TELECOMM.
FOR; ❑ ACTION & DISPOSITION
FILE
INFORMATION
REVIEW & COMMENT
RETURN
� � �
�i
I
/' //, i
�_
• RECEIVED By
TRANSMITTAL PLANNING DEPAR NT
CITY OF NEWPORT BEACH
Q MAR 27 1997
UNIVERSITY DRIVE, AN
NEW SUITE 200 ' - jiITjuj12j2j2jg141516
NEWPORT BEACH, CAIIf ORNIA 91660
714 Sze 1325 FAX 714 574 133E TAY L O R
•� & ASSOCIATES
A•RCHMC TUBE AND INTERIOR DESIGN A R C H I I I[ i S
1 I
r0 DATE
CITY OF NEWPORT BEACH - PLANNING March 25, 1997 0
• PROJECT NUMBER
3300 Newport Boulevard 1020.10
` PROJECT
Newport Beach, CA 92663 - HOAG MEMORIAL HOSPITAL PRES.
ATTENTION: Gina Garcia EMERGENCY GENERATOR BUILDING
• WE ARE SENDING•YOU VIA THE FOLLOWING ITEMS
U.S. Mail
_PRINTS _ORIGINALS OTHER ISEE DESCRIPTION BELOW)
NO OF ITEMS DATE. DESCRIPTION '
1 12/5/95 Acoustical Report from McKay, Conant, Brook. ,
THESE $RE TRANSMITTED AS CHECKED BELOW:
FOR APPROVAL FOR YOUR USE AS REQUESTED FOR REVIEW AND COMMENT
REMARKS -
Gina: • , - -
Here Is a copy of the Acoustical Report for your files, as requested.
Thanks. _
copyTo:File FROM: Gary Simmons
McKAY
CONANT
BROOK 1Nc RECEIVED
Consultants in Acoustics and Media Systems
Ronald L McKay
David A Conant
Rollins Brook
6 December 1995
Gary E. Simmons, Architect DEC 0 7 1995
Taylor 6t Associates, Architects
2220 University Drive, Suite 200 TAYLOR & ASSOC, ARCHITECTS
Newport Beach, CA 92660
Subject: Hoag Hospital Emergency Generator Replacement: Preliminary Noise.
Control Recommendations for Inlet, Discharge and Exhaust Openings.
Dear Gary:
Further to our recent telephone discussions, we are pleased to enclose our preliminary
recommendations for noise control for the generator -building inlets and outlets. We would
comment as follows:
1. Design Noise Criterion
The design noise criterion defined in the Community Development Plan for this project
is 55dBA at any nearby property line, irrespective of the time of day.
Generator noise impacting the hospital tower is also of concern (in order that patients
are not unduly disturbed during generator testing). We recently visited the site and
measured levels of approximately 55dBA outside the facade of the hospital tower. It is
our opinion that 55dBA would be an appropriate design criterion to adopt for generator
noise incident on the exterior of the tower.
2. Discharge Shaft "Caps"
As discussed in our fax of 20 November 1995, we would strongly recommend that the
tops of the discharge shafts be "capped" as you suggested at our meeting. This
significantly reduces the silencer requirements (by directing noise away from sensitive
property lines), in addition to protecting the silencers from the elements (Derail 1,
enclosed, shows the general design intent)'.
3. Manufacturers' Noise Data
We received the following noise data for the proposed. generators (Caterpillar 3516,
1750kW units) from your office on 30 October 1995:
::• ':Ocfave Band`Center Frequency. (Hz); • :::
Siiund Pressure I eveI. at Distance.
....... ., :. . •
• ,:; Shown, d$ re:'Z x:•10', Pa.. "
,...,:..... • ;:•: ,•:- •::... • ...
::63,.
225:.250;
.560
;;,Ik.:..2k.'..:.4k:
Caterpillar 3516: Exhaust @ 4.9 ft.
105
106
112
111
108
108
108
106
Mechanical @ 3.2 ft. (no fan)
100
102
98
99
101
99
95
90
5655 Lindero Canyon Road
Suite 325
Westlake Village CA 91362
8IS 991 93CO Fax 818 991 2324
HOAG Hospital Emergency Generators
5 December 1995
Page 2
M`KAY
CONANT
BROOKINC
We understand that the standard Caterpillar radiator/fan will be replaced by a Young
unit which will be exactly the same as chose previously used in the Harbor UCLA
project. Along with this Caterpillar data, we received the following noise data for the
proposed Young fan/radiator unic:
'Sdund�I?ressuie IseYel aE 25'ft_ftotri� •• . _ Octave;.BariCenter•Frequericy:(Fiz)': ;'• '' '
Fan.RingEdglip' re 2,k 10'.Pa : 63' ; .125„ .250
Young 7.75 ft.`diameter, 78 74 69 63 [.60 58 52 45
55605 cf n fan, @ 1" w.g.
4.
5
Mode of Operation & Testing
We understand chat a maximum of four generators will be in operation at any one time,
and that the fifth generator will function only as a standby unit. If five generators run
together ac any time, noise levels will increase by only ldBA (one dBA).
CFM Figures
The standard Caterpillar unic with its faccory-ficted radiator and fan is listed as having
an inlet airflow requirement of 81,000cfm per unit (plus 5724cfm per unit for
combustion air at the inlet only). We understand, however, char when ficted with the
Young radiator units, each generator draws only 55605cfrn (in addition to 5724cfm
combustion air), giving a total of 245,316cfm inter air for 4 units, and 55605cfm per
discharge shaft. For our analysis, we have assumed char the Young radiacors/fans will
definicely be used in the design, since we understand this to be the case, and since this
option is acoustically far superior to using the Caterpillar radiator/fan option.
a. Inlec:
The proposed cross -sectional size of the bank of inlet silencers is 56 ft. x 7 fc.,
giving a face velocity of 630fpm with the Young radiators/fans.
b. Discharge:
Each discharge shaft has a proposed cross -sectional area of 100 sq. fc., thus giving
a face velocity of 560fpm with the Young radiacors/fans.
E
HOAG Hospital Emergency Generators
5 December 1995
Page 3
6. Noise Control
M`KAY
CONANT
BROOK we
Due to the extremely sensitive nature of this project, it is vitally important that
.acoustically -inferior products are not substituted for those suggested below. Any
proposed substitutions should be submitted for our approval.
a. Inlet Duct Silencers .
We recommend that the inlet silencer bank be constructed from silencers
equivalent to IAC type 5ES (see enclosed catalog cur). The published static
pressure drop figure for these silencers at a face velocity of 630fpm would be
approximately 0.07" w.g.
b. Discharge Duct Silencers
We recommend that a 10-fooc silencer equivalent to IAC type 10L be installed
in each discharge shaft (see enclosed catalog cut and Detail 1). The catalog static
pressure drop figure for each of these silencers is approximately 0.05" w.g. at a
face velocity of 560fpm.
C. Exhaust Muffler
We recommend an exhaust muffler equivalent to a 14" diameter-inlec Nelson
400. The "Maxim M-51" muffler originally proposed in your initial transmittal
would nor be acoustically adequate.
d. Acoustical Lining
Inside the generator building, the walls and the underside of the roof should be
completely covered with 4"-chick acoustical lining equivalent to Schuller '
Linacoustic R-300 (see catalog cut sent with our fax of 20 November 1995).
The inlet plenum between the room roof opening and the inlet silencers should
also be similarly lined, as should the discharge shafts. For the proposed location
of the lining, please see enclosed Detail 1. The lining opposite the radiator fan
at the bottom of each discharge shaft may be protected by a perforated metal
liner if this is required to stop tearing and erosion by the large incident airflow.
The liner should have a minimum 35% open area and should be no thicker than
20 gauge.
•
HOAG Hospital Emergency Generators
5 December 1995
Page 4
7. Building Construction
a.
Walls and Roof
M`KAY
CONANT
BROOK :Nc
We would reiterate our recommendation that the walls and roof be constructed
from concrete with a minimum weight of 100 lb./ sq. fr.
Doors and Interior Walls and Windows
We will make recommendations for doors and interior walls and windows in due
course.
We trust that the above information is adequate for your current needs. We will calculate the
acoustical requirements for the items listed in section 7.b, above, and will forward our
recommendations within the next few days. If you have any questions in the meantime, please
do nor hesitate to call.
Yours sincerely,
M`KAY CONANT BROOK we
Matthew rooke, Ph.D.
Consultant
MB:sk
Enclosures
cc: Mr. Toshio Okajima, P.E. - J. L. Hengstler Associates
Mr. Russ Givens - R. E. Wall & Associates
9)"ixS'C MNmWtot
41' ur ll�R. 4
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Chc toL-
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GENE
GENERATOR PAD
4" L4r4pj&. wor
ectAT%5p &Wxj t 1ar<xe
� F �-ss,�GY (riw 3s•G �
.4u LA414G
ROOM
slupi 2S
('�1AN 7a
.JAC s�
ELECTRICAL
SoMa,M '5KaW%t4G t1FLc#m&o4oe > Loc&T awS
of 1401SE ,M%TIGATior,! ME7.StAWXS
Type L Oulet•Duct Silencers have been rated with procedures certified
in accordance with applicable portions of ASTM E 477. All Dynamic
Insertion Loss and Self -Noise Acoustic Performance Data were ob,.
tallied in IAC's Aero-Acoustic Laboratory using the duct -to -room
reverberant test facility with air flowing through the silencers.
e Forward Flow (+) occurs when noise and air travel In the same
direction, as In a typical supply or fan discharge system.
e Reverse Flow (—) occurs when noise and air travel in opposite
directions, as In a typical return or fan Intake system.
For other IAC Rectangular Silencers and Tubular Conic -Flows
Silencers, see Application Manual. Use SNAP FORM for System Noise
Analysis Procedures and PRESS FORM for cost optimization and Pick-
ing the Right Energy Saving Silencer.
1*� �[riln3-lra�■.ti 1=i a•I•T-il
QUIET -DUCT MODELS AND SIZES
EXAMPLE:
Model
� �- `4Wi181
Length, L Typepe Width,
W Hetght, H
(Feet) L (Inches) (Inches)
TABLE i DIMENSIONS AND WEIGHTS OF L SILENCER MODULES
hi
wlm
H lrt2
4j8
.12;
_12i1$'
12i
t 2]i
2}
A?i
F30j8
�
jk:Ct
,4_2
z12•j
t48x
)241
118`'.
i245
i24
24;
;30
•24}
;38�
;24;
•'42;
:24:;38
;48;
24
f36y;,38�
:30�2,
38A
8
iq8,
y8-,c',4_81
i$061
%48;
,42?
_48=
,•',46a
t
Wt,lb
24
33
43
52
62
74
83
93
71
86
102
117
132
147
121
143
183
184
205
182
209
235
261
rior-mal
t
Wt, Ib
41
56
73
89
107
125
141
158
121
147
173
204
230
256
211
245
279
312
346
312
353
395
438
t
Wt, Ib
59
78
102
125
150
176
199
226
170
207
243
288
325
362
286
351
398
445
492
—
—
—
—
t
Wt, lb
81
111
155
177
212
250
—
—
241
293
345
405
—
—
—
—
—
—
—
—
—
—
—
NOTE (—) Indicates size not available as standard.
TABLE If DYNAMIC INSERTION LOSS (DILI RATINGS: FORWARD (+)!REVERSE (-) FLOW
�'
Oc at" ve4Band
�2•?�
�•�
x+`�
� 8 ..
-�V` �ns8
_'
Z'
AC
Ilence acg
M e
e oc
Dynamic
IRse to - sa,
dB
Nug�er
,pm
- 5000
7
9
it
16
25
18
13
7
3 L
- 2000
5
6
10
15
25
19
13
8
+2000
4
5
9
14
23
24
14
10
+5000
3
4
7
12
21
25
16
12
- 6000
9
11
15
24
31
32
17
10
5L
- 2000
7
8
14
23
31
33
17
11
+2000
8
7
13
21
29
39
20
14
+5000
5
6
11
19
27
39
20
15
-5000
11
17
20
31
43
40
24
14
%L
- 2000
8
14
19
30
43
41
24
15
+2000
8
13
18
28
40
47
26
18
+6000
7
9
16
27 j
38
47
27
19
-5MW
12
22
27
41
50
50
34
20
-2000
70
19
26
40
49
50
34
21
10L
+
18
2
8
35
24
+
10
14
23
38
47
50
NOTE All OIL and SNf•HOIw Activate PeNOrmande Date were Obtained In IACs Rao UbaatOry using the ducbtdtobm rararberant test facility with
aH 11dwrng rhrouge III* aflencars. Sea rawrss side 10( Sell•NOlts and Mrodynamie Oat&
ALSO SEE REVERSE SIDE FOR NOTE ON WHEN OILS EXCEED 50 dB
TABLE III AERODYNAMIC PERFORMANCE DATA OF L SILENCER MODULES
�IcSGD tr�
ode
r eaauDF g
m aSIZ
PrOall
6 x 12
0.5
500
710
875
1000
1125
1235
1420
1590
1750
1960
2250
2520
12 x 12
1.0
420,
17
3
3375
3705
4960
4770
5250
5850
67.
50
12 x 18
1.5
12x24
2.0
2000
2840
.3500
4000
4500
4940
5680
6360
7000
7800
9000
10050
12 x 30
2.5
25W
3550
3875
6000
5625
6175
7100
7950
8750
9750
11250
12600
12 x 38
3.0
c
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15700
12 x 42
3.6
r;
3500
4970
6125
7000
7876
8645
'
9940
11130
12250
13650
15750
17800
12 x 48
4.0
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100•
a
a
24 x 18
3.0
3000
4200
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
24x24
4.0
:
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100
24 x 30
5.0
E
5000
7100
8750
10000
11250
12350
14200
15900
17500
19500
22500
25200
24 x 36
6.0
a
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
24 x 42
7.0
7000
9940
12250
14000
15750
17290
19920
22240
24500
27300
31500
35200
24x 48
8.0
0
-1
8000
11360
114000
16000 1180001
19760
122800
25400 128000
131200
36000 140200
36 x 24
6.0
6000
8520
10500'
12000
13500
14600
17050
19100
21000
23400
27000
30200
36 x 30
7.5
1
7500
10650
13130
15000
16880
18520
21300
23850
26250
29250
33750
37720•.
36 x 36
9.0
_1
9000
12780
15760
18000
20250
22240
25560
28620
31500
35100
40500
45270
36 x 42
10.5
"y
10500
14910
18380
21000
23630
25940
29820
33400
36750
40950
47250
52820
36 x 48
12.0
F
12000
17040
21000
24000
27000
29640
34100
38200
42000
46800
54000
60400
48 x30
10.0
10000
142oo
17500
20000
22500
24700
28400
31800
35000
39000
45000
50300
48 x36
12.0
12000
17040
21000
24000
27000
29600
34100
38200
42000
46600
54000
60400
48 x 42
14.0
14000
19880
24500
28000
31500
34580
39840
44480
49000
54600
63000
70400
48 x 48
16.0
16000
22720
28000
32000
36000
39520
45600
50800
56000
62400
72000
80400
NOTE 1: For module availability see Table L
NOTE 2 Airflow ratings for the 12 In. x 12 in. size, shown with blue overprint. represent both arm par so It and silencer face velocities in Ipm. A useful concept in soleqting
mullipte module silencers.
NOTE k The tabulated W If" Is In elm based upon testa conducted In the IAC Research 6 Development Laboratory Facilities in accordance with applicable AMCA. ASME.
and ADC Aidlow Tut Codes. These bodes require specified lengths of straight duct both upstream and downstream lot the tut apecimen. The downstream measurements
ore made far enough downstream to Include -static regain". Therefore. It silencers are Installed immediately before or allot elbows, or transitions, or at the Intake or
discharge of the system, sufficient allowance to compensate for these factors must be Included when calculating the operating static pressure loss through the Silencer.
rhos# conditions can 4441mm IQ to several velocity heads, depending on spoo locondfllons. All acoustic and aelocynamlc data obtained on 24 in. a 24 In. production units.
LE IV SELF -NOISE POWER LEVELS, dB re: 10-t2 WATTS
Ocra a Bind
�
a1.a�
i2 a �$
4?,4
3?�r
$J7
6 Y
_250j
500;
91K3'2tg
'SK'.
eC
TSlbncer.'
Mod"`
acs
o a
ower•Levefs
dB
l7um6�g
so clt);,lp
y,SN}
isB
ts;a
- 5000
74
67
67
73
65
67
73
78
-4000
69
63
63
68
63
64
68
69
-3000
64
59
58
62
60
62
62
58
1
- 2000
55
52
52
53
56
56
53
43
All
- 1000
41
41
41
38
49
48
38
(20
SIZES
+ 1000
38
31
37
32
32
36
24
420
+2000
57
51
51
49
47
50
44
35
+3000
68
63
59
60
56
58
56
50
+4000
76
71
65
88
fit
84
84
59
+5000
82
77
70
72
87
69
71
67
TABLE V FACE AREA ADJUSTMENT FACTORS
Add or subtract from PWL values above
Oi11eGD17ct
7w., ee,8.1 ( R
0.5
1
1 2
4
8
18
32
1+9
,84
128
wn t
B
-9
-6
-3
0
+3
1+0
+12
+15
*For MfermWlate lace anax lntelpolsis to nearest Whole number.
WHEN DIL REQUIREMENTS EXCEED 50 dB
• Noise flanking around the silencer or along duct silencer
walls may limit actual performance to approximately 50
d8 Dynamic -insertion Loss for many systems.
• Self -Noise Interference should be checked out especially
for systems with high noise reduction requirements.
• Specially designed silencers and full-scale orscale•model
testing are available for applications requiring silencing
In excess of 60 dB or other unusual requirements.
• Call your local IAC Representative for details.
CONVERSIONS
Multiply
By
To Obtain
dim.......
4.719 x fro
cubic meters per second (mOlaac)
tpm.... ...
0.0050e
meters par second (Ms)
In.........
25.4
mllllmelers(mm)
I.w.g.......
249.1
Newtons per square motor(Nlm2)
it.........
0.304e
Motor$(in)
It2........
0.0929
square motors (m�
Its.........
0.4535
kilogram (kg)
OIL. Solt -Raise. and Aldlow Date CERTIFIED In accordance with ASTM C477
We reserve the right to improve design and specifications without notice at any t1ma.
AVAILAaLE UPON REOUES7[ Specially designed silencers and full-scale or model luting lot unusual applications.
NOTE: PAGES 5 THROUGH. 52 Of THIS CATALOG AREA VAILABLE
AS INDIVIDUAL"SHEETS.'M6 rl INDUSTRIAL ACOUSTICS COMPANY,
REQUEST BY NUMBER SHOWN IN UPPER RI_GHT'HAND CORNER.
Type Es Quiet -Duct Silencers have been rated with procedures cer-
tified in accordance with applicable portions of ASTM E 477. All
Dynamic Insertion Loss and Self -Noise Acoustic Performance Data
were obtained in IAC's Aeroacoustic laboratory using the duct -to -
room reverberant test facility with air flowing through the silencers.
e Forward Flow (+) occurs when noise and air travel In the same
direction,, as In a typical supply or fan discharge system.
e Reverse Flow (—) occurs when noise and air travel in opposite
directions, as in a typical return or fan intake system.
For other IAC Rectangular Quiet -Duct Silencers and Tubular Conic -
Flow* Silencers, see Application Mahual. Use SNAP FORM for
System Nolse Analysis Procedures and PRESS FORM for cost op-
timization and Picking the Right Energy Saving Silencer.
m
v
i
1]
FREQUENCY, Hz
ACOUSTICAL EFFICIENCY
r,vn iv ucatutvntc 1 rrtT u
QUIET -DUCT MODELS AND SIZES
T
1' H
v �
EXAMPLE:
-
Mode1
SEs 24 18
1_1 �k - `�
Length, L Type Width, W Height, H
(Feet) Es (Inches) (inches)
ACOUSTICAL EFFICIENCY PLUS ENERGY SAVINGS
For many years, the IAC Type S Quiet -Duct Silencer has
been the Industry standard for maximum noise reduc-
tion with minimum silencer length. The Type Es 'Energy
Saver' Silencer provides the same high level of acoustic
performance combined with a marked decrease In energy
consumption. See additional details an reverse side of
this bulletin.
TABLE I DYNAMIC INSERTION LOSS (DIL) RATINGS
fi
Octeve:Bb ds
:�}
8�2
Sa3
.10
a oc e e
P
esAlon'
- 2000
6
10
19 29
36
34
23
15
- 2000
11
19
24 40
52
49
27
17
77Es
-2000
11
21
40 53
54
54
38
24
- 2000
14
30
40 57
58
66
47
29
- 1000
11
17
23
39
50
49
32
ICES
- 1000
12
31
44
54
55
56
50
31
3Es
+1000
4
8
15
25
34
34
24
17
SEs
+1000
8
13
20
35
50
49
36
24
7Es
+1000
8
18
35
48
54
53
46
32
ICES
+1000
10
28
42
55
54
57
51
38
3Es
+2000
3
7
13
23
18
SES
+2000
7
12
19
33
48
49
36
25
7Es
+2000
7
16
1
32
1
132
46
134
54
124
51
48
34
ICES
+2000
8
23
39
55
54
57
52
41
(+) Forward Flow I.) Rowse flow
NOT& Noise flanking around IM slleneu Of slap duet walls may flmll pu(ormana la
,altmclmaley 50 de OIL Ice many SYStemc Specialty daapnad slfenars and Iull•,pale a
Seale model testing are available low appllcellons requiring in access of 50 de OIL Call us
la details.
m ad
a
z
�30
a
W
v 20
i Type Es Compared to
Type Switnsamuldlow,
W t0 ee f"10411y, and length
a
LENGTH.Fr
ENERGYSAVINGS
TABLE II SELF -NOISE POWER LEVELS, d6 to: 10-12 WATTS
t
'Oc`ta a 'a"iia"
W
T'12
W14; 8..'ids 1821
1'i
z
3
*25; ''0'
t.500 �1 1 &K; M
ode :
urtJbe
Sl aInce
rVe
a H o se
owe
ere{eB
- 2000
56
64
58
60 81
65 69
64
ES
- ISM
47
47
52
55 57
63 64
54
- 1000
41
41
45
47 52
60 48
38
All
((
+ 1000
42
35
33
32 34
33
27
22
+ 1500
50
47
44
41 43
45
43
41
+2000
60
57
54
50 49
53
53
50
(+) Forward Flow (-) aeserse Flow
Fare velocity la determined by dividing ctm by sllcn ISO* use In SO It.
Interpolate OIL and Solt -Noise Ia Intermediate aelodUes.
TABLE III FACE AREA ADJUSTMENT FACTORS
Sell-Nolse Power Levels listed above are referenced to a silencer
face area of 4 sq It. For other areas, add or subtract the following:
u 4it'Obct
,ace III— - 0.5
1
2
4
8
18
32
84
128
a
rjw,B
ec ar - 9
1 - 8
- 3
1 0
+3
+8
+9
+42
+15
'Fa Intermedlate face areas. Imerpplale to retreat whole number.
SDS 12.2
.TABLE IV PHYSICAL AND AER% NAMIC PERFORMANCE DATA OF Es SILENIJ MODULES
almost Nyin6er
u Dy`d
icy'
,•
a
at a on
f6 wMit'rd9:E05#e
t2Pk7(t8 T,a
!p3#
IIv .� 62� i
z F�
aa
'LO
Oil! 9S 8!
OR
Itr.3Qi QlI
to
SR F
�i43Et'
fikiC
i14r711
c�
,,.12
0.50
22
40
55
77
237
338
411
475
531
581
671
751
822
919
1062 1187
8 x 24
1.00
35
63
88
123
475
671
822
949
1062
1163
1343
1501
1644
1 1838
2123 2374
8 x 36
1.50
49
87
171
712-
1424
1592
744
2467
2758
3184 3560
12 x
33
561
78
111
1 475
671
822
949
1062
1163
1343
1501
1844
1838
2123
12x
12 x 24
2.00
52
89
125
177
949
1343
1644
1899
2123
2328
2885
3002
3289
3877
4248 4747
12 x 30
2.50
82
107
150
212
1187
1678
2056
2374
2664
2907
3357
3753
4111
4596
6307 5934
12 x 36
3.00
74
125
176
2§0
1424
2014
2467
2848
3184
3488
4028
4504
4933
5516
6369 7121.
12 x 42
3.50
63
141
199
-
1662
2350
2878
3323
3715
4070
4699
5254
5756
6435
7430 8308
12 x 48
4.00
93
158
226
-
1899
2885
1 3289
1 3798
4246
4661
5371
6005
1 6578
7354
8492 9494
24 x 18
3.00
71
121
170
241
1424
2014
2467
2848
3184
3488
4028
4504
4933
5516
6369 7121
24 x 24
4.00
86
147
207
293
1899
2685
3289
3798
4246
4651
6371
6005
6578
7354
8492 9494
24 x 30
5.00
102
173
243
345
2374
3357
4112
4747
6308
5814
6714
7506
8222
9193
10615 11868
24 x 38
6.00
117
204
288
405
2848
4028
4933
5697
6369
6977
8056
9007
9867
11031
12738 14242
24 x 42
7.00
132
230
325
-
3323
4699
5756
6646
7430
8140
9399
10508
11511
12870
14861 16615
24 if 48 1
8.00 1147,
258
1362,
-
13798
5371
6578
7595
1 8492
9303
10742
12010
13156
14708
16984 18989:
38 x 30
7.50
-
-
5035
6167
7121
7961
8721
10070
11259
13789
15922
36 x 36
9.00
182
284
-
-
4272
6042
7400
9553
10465
12084
13511
14800
16547
117802
19107 21362
36 x 42
1
11421249
1050
182
319
-
-
13560
4985
7049
8633
9969
9989
11145
12210
14098
16762
112333
17267
19305,
22291 24923
38 x 48
12.00
204
355
-
-
5697 1
8056 1
9887 111393
12738
13964
16112
118014
19734
22063
25476 28483
1111: Individual modules can be assembled In multiple$ to build Silencer -banks' of
$kew *that than Mae Ilajed above. Alffiow Capacity of any silencer bank la the sum of
cahecilles of Individual modules.
NOT/ 2: Ahflow, (silage for the 12 In. x 12 in. eke, shown with blue Overydnt, NIP/esenl
both elm per SO It and silence face Velocities in Ipm.A useful concept In esisoting multi.
PM modulo SIINCNs.
NOTI X The tabulated airflow Is In Win based upon tuts conducted In the IAC Re$esfch
A Development Laboratory Facilities In accordance with applicable AMCA, ASME, and
I ?NERDY CONSUMPTION
ADC Airllavr Test Codes. Thees codes regUlfe specified I00MS of $Ua19119 duct coin
upstream and downstream lot the test specimen. The downstream measurements are
made far enough downaueam to Include 'Static regain.' Therefore. It silences are In,
stalled Immesiatey belOra Or stiff elbows, ar Uamitions, or at the intake Or discharge of
1M system, Sufficient allowance to compeneale far these factors mot be Included when
almlating the operating static pressure lose through the 311ena44. inns conditions can
add from Ir2 to several velocity Ands, depending on spealfla conditions pee IAC Oafs
Shesf SOS 9l. All acaiistle and aerodynamic data obtained on 24 In. x 24 In, production
unls.
Nt a ^r-,en alrflow, lower silencer pressure drop means lower tan horse -
DV, squirements and lower system operating costs. Accordingly, St.
enc�.d for air conditioning applications are usually selected for a
wassurs drop of approximately 0.5 in H2O or less.
This chart can be used to determine relative differences between In.
list cost and long-term energy consumption operating costs for any
'ype Es Silencer at a specific airflow.
ixample Comparing Two Es Silencers with Different Dimensions:
Case I
Case II
Site
24" x 42"
24" x 48"
Cliff
10.500
10,500
Pressure Drop,i.w.g.
0.5
0.38
Relative Initial Cost Index
1.2
1.4
Relative Operating Cost Index
5
3.8
Total Relative Cost Index
6.2
5.2
T this case, it pays to use the larger silencer. Operating cost savings
lore than offset higher Initial costs.
In practice, analysis of energy consumption costs should be made for
all IAC Silencers which meet OIL requirements. Pressure drop and
dnergy consumption can be reduced by Increasing silencer face area (as
n the above example) or by using lower pressure drop IAC Silencers. For
!stalled energy saving silencer selection strategies and comparison of
'nergy usage characteristics of Type Es Silencers with other Quiet.
lucte Silencers, see PRESS FORM Selection Guide.
OPERATING COSTS ARE BASED
N RATE. BOY, FAN EFFI-
CIENCY. ON
OJUSrEG ACCORDINGLY
1010
10a4��G
wf
3oqP
QIEAD'A','CrOSR
Z
1�+�
a UeNit
I NITIAL
7UU
COST
g4
3 ES
SILENCER STATIC PRESSURE DROP - IN. H2O
Relativeonly. Consult t IAC for e:ic analysi41 s O 3041C licOf mapP11"Al na, Ian
CONVERSIONS
Multiply
By
To Obtain
Multiply
By
To Obtain
aim.......
4.719 x 10-4
CUM major$ per second (mOlsso
II""'""
g.2g4e
motes (in)fpm.......
O.OM
mete$ De Sacand (MIS)
It2........
0.0929
squats motors (1112)
I^ .......
2a.4
mllllmetes(MM)
Ib.........
0.4506
kilogram ling)
......
249.1
Newtons'per square motor(Nlm�
V 4
lt� Aft
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DESIGN AND SPECIFICATIONS
WITHOUT NOTICE AT ANY TIME
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e!
P.