proposal_duct silencer ม.ศิลปากร

8/8/2019 Proposal_Duct Silencer .

http://slidepdf.com/reader/full/proposalduct-silencer- 1/46

F

F

F (Duct Silencer)



1. F

2. F

3. 4. F



1. F



2. F



A B E CACOUSTIC CONTROL



2

AERO ACOUSTICAL REVERBERATION LABORATORY

The duct system

Receiving room

system fan

sound source chamber



4

AERO ACOUSTICAL REVERBERATION LABORATORY

Source room

Floating room

Test specimen

Control room



5

DUCT SILENCER CONNECTIONS

STANDING S STANDING S(ALT.) STANDING S(ALT.)

PLAN"S"SLIP HEMMED"S"SLIP

7

6"

MAX

MINIMUM

LENGTH OF

ALL CLIPS

PERIMETER

CONNECTION

NOSE

CONNECTION

CONTINUOUS

GASKET TO EFFECTIVELY

SEAL FLANGES

AND CORNERS

0.064" MINIMUM

CORNER PIECES

WITH 3/8" MINIMUM

BOLT

SECURELY ATTACH

ADDITIONAL METAL

CLIPS ON FLANGES AT

15" MAXIMUM CENTER

FOR 3" W.G. STATIC

OR LESS AND AT

12" MAXIMUM FORHIGHER PRESSURES

MINIMUM.



6

INSTALLATION GUIDE



7

INSTALLATION GUIDE



8

INSTALLATION GUIDE



9

INSTALLATION GUIDE



10

Noise Octave Frequency Band In Hz

Criteria

Curve 63 125 250 500 1000 1000 4000 5000

NC-15 47 36 29 12 17 14 12 11NC-20 51 40 33 26 22 19 17 16

NC-25 54 44 37 31 27 26 22 21

NC-30 57 48 41 35 31 29 28 27

NC-35 60 52 45 40 36 36 33 32

NC-40 64 56 50 45 41 39 38 37

NC-45 67 60 57 49 46 44 46 42

NC-50 71 64 58 54 51 49 48 47

NC-55 74 67 62 58 56 54 53 52

NC-60 77 71 67 63 61 59 58 57

NC-65 80 75 74 68 66 67 63 67

CRITERIA FOR DESIGNNOISE CRITERIA CURVES (NC)



38

ATTENUATOR SPECIFICATIONS

Splitters

To be manufactured from a minimum 22

gauge perforated galvanized steel perforation

with 2.5 mm. diameter giving a minimum 23% open

area. The splitters shall incorporate solid bull nose

and perforated taper sections at the rear as required.

The splitters shall be inserted and locked intothe duct silencer casing by an interlocking track.

The track shall be constructed from solid galvanized

sheet steel of the same thickness as the casing

and be spot welded to the casing.

Outer Casing

To be constructed from galvanized steel of

minimum 18 gauge and fabricated in accordance

with the requirement of the ASHRAE guide

recommendation for high pressure ductwork.

Spiltter Infil material

This shall be a glass fiber material in accordance

with ASTM-C423. The material shall be compressed

to not less than 10% of its volume to ensure solid

packing in the splitter.

The infil shall be tested in accordance with

ASTM-C411 to give a standard infil temperature

limit of 120 ºC an a galvanized sheet steel limit

of 250 ºC. For a high temperature infil, an infil

limit of 540 ºC is required with a galvanized steel

limit of 650 ºC. The infil materials must also meet

the requirement of NFPA - 90 and ASTM-E84

for flame spread and smoke development.

Alternative casing and splitter materials can be

provided as required. A polyester or mylar

membrane can also be provided as required tominimize the ingress of dust or water into the

infil

15 Supply 81 78 75 69 62 70 74 69

10 Supply 60 57 54 50 49 53 53 50

8 Supply 52 49 46 43 44 47 45 43

6 Supply 46 42 39 37 39 40 36 32

EMF 3 Supply 28 19 18 19 24 19 10 7

3 Return 29 31 36 38 46 57 36 21

6 Return 44 44 49 51 55 62 57 47

8 Return 50 49 54 57 58 64 66 57

10 Return 57 55 58 60 61 65 69 65

15 Return 76 69 71 71 70 69 80 86

Supply : Air traveling in the same direction of sound propagation.

Return : Air traveling in the opposite direction of the sound propagation (Interpolate self-noise for intermediate velocities.)

RECTANGULAR DUCT SILENCEREXCELLENCE MID-FREQUENCY NOISE ATTENUATION

TYPEEMF

L

W

H

HOW TO ORDER

EXAMPLE 1,200 X 1,000 EMF X 1,500

Duct Width x Duct Height x Model x Duct Length



39

10 Supply 3 5 9 17 21 23 15 11

8 Supply 3 5 9 17 21 23 15 11

6 Supply 3 5 9 17 23 22 15 11

3 Supply 3 5 9 17 23 22 15 11

2EMF 600 0 Static 3 6 11 18 23 22 15 11

3 Return 4 7 11 19 24 22 15 10

6 Return 4 7 11 19 24 22 15 10

8 Return 4 7 12 19 25 22 15 9

10 Return 4 7 12 19 25 22 15 9

10 Supply 4 8 14 25 32 34 23 17

8 Supply 4 8 14 25 32 34 23 17

6 Supply 4 8 14 26 34 33 23 16

3 Supply 4 8 14 26 34 33 23 16

3EMF 900 0 Static 5 9 16 27 35 33 22 16

3 Return 6 10 17 28 36 33 22 15

6 Return 6 10 17 28 36 33 22 15

8 Return 6 10 18 29 37 33 22 14

10 Return 6 10 18 29 37 33 22 14

10 Supply 6 10 6 29 40 42 30 22

8 Supply 6 10 16 29 40 42 30 22

6 Supply 6 10 17 30 41 41 29 21

3 Supply 6 10 17 30 41 41 29 21

4EMF 1200 0 Static 7 11 18 31 42 41 26 20

3 Return 8 13 20 33 43 40 25 18

6 Return 8 13 20 33 43 40 25 18

8 Return 8 14 21 34 44 40 24 16

10 Return 8 14 21 34 44 40 24 16

10 Supply 8 11 18 32 47 49 36 26

8 Supply 8 11 18 32 47 49 36 26

6 Supply 8 12 19 34 48 48 34 25

3 Supply 8 12 19 34 48 48 34 25

5EMF 1500 0 Static 9 13 20 35 49 48 30 24

3 Return 10 16 22 37 50 47 28 20

6 Return 10 16 22 37 50 47 28 20

8 Return 10 18 23 38 51 47 26 18

10 Return 10 18 23 38 51 47 26 18


TYPEEMF



40

10 Supply 8 13 25 40 50 52 41 298 Supply 8 13 25 40 50 52 41 29

6 Supply 8 14 20 42 51 51 40 29

3 Supply 6 15 26 42 51 51 40 29

6EMF 1800 0 Static 9 16 20 43 51 50 38 27

3 Return 10 18 29 44 52 49 36 24

6 Return 10 18 29 44 52 49 36 24

8 Return 10 19 30 45 53 49 34 22

10 Return 10 19 30 45 53 49 34 22

10 Supply 8 15 31 47* 53 54 46 32

8 Supply 8 15 31 47 53 54 46 32

6 Supply 8 15 32 49 53 53 45 32

3 Supply 8 17 32 49 53 53 45 32

7EMF 2100 0 Static 9 18 35 50 53 52 45 29

3 Return 10 19 35 51 54 51 44 28

6 Return 10 19 35 51 54 51 43 27

8 Return 10 20 37 52 54 50 42 26

10 Return 10 20 37 52 54 50 41 25

10 Supply 8 18 34 50 54 55 48 35

8 Supply 8 18 34 50 54 55 48 34

6 Supply 9 18 35 51 54 54 47 34

3 Supply 9 20 35 51 54 54 47 34

8EMF 2400 0 Static 10 21 37 52 54 53 47 31

3 Return 11 22 7 52 54 52 46 28

6 Return 11 22 37 52 54 52 45 28

8 Return 11 23 38 53 54 51 44 27

10 Return 11 23 38 53 54 51 43 26

10 Supply 9 24 40 57 57 56 53 40

8 Supply 9 24 40 56 57 56 53 39

6 Supply 10 25 40 56 56 55 52 38

3 Supply 10 25 40 55 56 55 52 37

10EMF 3000 0 Static 11 26 40 55 55 54 50 36

3 Return 12 28 40 55 54 53 49 29

6 Return 12 28 40 55 54 53 48 29

8 Return 13 29 40 54 54 53 47 29

10 Return 13 30 40 54 53 53 46 29

Note :

Supply : Air is travelling in the same direction of sound propagation.

Return : Air is travelling in the opposite direction of sound propagation.

Interpolate dynamic insertion loss (DIL) from intermediate velocities.


TYPEEMF



41

Self Noise CorrectionFactor, dB -9 -6 -3 0 +3 +6 +9 +12 +15

900 6 14 21 24 34 45 54 68 91 126 165 214

1,200 7 15 23 29 36 48 57 71 97 133 175 227

1,500 7 15 24 30 37 50 59 74 100 138 181 235

1,800 9 19 28 36 45 60 71 90 121 167 219 285

2,100 10 21 32 40 50 67 79 100 135 186 245 318

2,400 11 24 35 48 59 79 94 118 160 220 289 3753,000 13 27 42 54 67 89 105 132 179 246 324 421

300 x 300 20 0.09 0.15 0.23 0.28 0.32 0.35 0.41 0.44 0.50 0.58 0.68 0.77 0.88

300 x 450 26 0.14 0.24 0.35 0.43 0.49 0.55 0.63 0.69 0.77 0.90 1.05 1.20 1.37

300 x 600 31 0.18 0.31 0.45 0.56 0.63 0.70 0.81 0.88 0.99 1.15 1.35 1.55 1.76

300 x 750 36 0.23 0.39 0.58 0.71 0.81 0.90 1.04 1.13 1.27 1.47 1.73 1.98 2.25

300 x 900 45 0.27 0.46 0.68 0.84 0.95 1.05 1.22 1.32 1.49 1.73 2.03 2.32 2.65

300 x 1,050 50 0.32 0.54 0.80 0.99 1.12 1.25 1.44 1.57 1.76 2.05 2.40 2.75 3.14

300 x 1,200 56 0.36 0.61 0.90 1.12 1.26 1.40 1.62 1.76 1.98 2.30 2.70 3.10 3.53

600 x 450 43 0.27 0.46 0.68 0.84 0.95 1.05 1.22 1.32 1.49 1.73 2.03 2.32 2.65

600 x 600 52 0.36 0.61 0.90 1.12 1.26 1.40 1.62 1.76 1.98 2.30 2.70 3.10 3.53

600 x 750 62 0.45 0.77 1.13 1.40 1.58 1.76 2.03 2.21 2.48 2.88 3.38 3.87 4.41

600 x 900 71 0.54 0.92 1.35 1.67 1.89 2.11 2.43 2.65 2.97 3.46 4.05 4.64 5.29

600 x 1,050 80 0.63 1.07 1.58 1.95 2.21 2.46 2.84 3.09 3.47 4.03 4.73 5.42 6.17

600 x 1,200 89 0.72 1.22 1.80 2.23 2.52 2.81 3.24 3.53 3.96 4.61 5.40 6.19 7.06

1,200 x 750 124 0.9 1.53 2.25 2.79 3.15 3.51 4.05 4.41 4.95 5.76 6.75 7.74 8.82

1,200 x 900 142 1.08 1.84 2.70 3.35 3.78 4.21 4.86 5.29 5.94 6.91 8.10 9.29 10.58

1,200 x 1,050 160 1.26 2.14 3.15 3.91 4.41 4.91 5.67 6.17 6.93 8.06 9.45 10.84 12.351,200 x 1,200 178 1.44 2.45 3.60 4.46 5.04 5.62 6.48 7.06 7.92 9.22 10.80 12.38 14.11

- If sound attenuators are installed immediately right after or before transitions, elbows, or at the intake or discharge

of the system, the pressure drops must be changed from those given above by at least a factor at 1.5 times, depending upon

specific conditions.

- Dynamic insertion loss and air flow data has been certified in accordance with BS 4718 and ASTM E477.

- All acoustic data has been determined in the MASON ACOUSTICS aero-dynamic reverberation laboratory in a reverberant

room of volume 332.6 m3

- All data was obtained on duct sizes 610 mm. x 610 mm.


TYPEEMF



3.



CALCULATION SHEET FOR PROJECT

NOISE TARGET : NC30

MACHINE : AHU-501 to 504



TABLE 1 : CALCULATION FOR NOISE BY USING ACOUSTIC SILENCER.

NOISE TARGET : NC30

MACHINE : AHU-501 to 504 (CFM) (CMS)

SUPPLY AIR AIR FLOW VOLUME = 7,400.0 3.49

MASON ACOUSTIC SILENCER : 1800 500 1500 3.880067 m/s

STATIC PRESSURE DROP. : 30 (Pa)

OCTAVE BAND (Hz) 63 125 250 500 1000 2000 4000 8000

SOUND POWER LEVEL FROM M/C (dB) 75 80 76 76 72 69 64 58

DIL OF SILENCER MODEL : EMF 1500 -8 -12 -19 -34 -48 -48 -34 -25

TOTAL NOISE 67 68 57 42 24 21 30 33

SELF NOISE OF SILENCER 35 27 26 26 31 27 19 15

TOTAL NOISE THRU SILENCER 67 68 57 42 32 28 30 33

DISTANCE LOSS IN DUCT WORK -34 -31 -22 -17 -17 -20 -23 -25

TOTAL NOISE 33 37 35 25 14 7 7 8

SAFETY FACTOR 3 3 3 3 3 3 3 3

TOTAL NOISE AT THE ROOM 36 40 38 28 17 10 10 11

CORRECTION FACTOR (dB to dBA) -26 -16 -9 -3 0 1 1 -1

SPL (dBA) 10 24 29 25 17 11 11 10


MASON ACOUSTICS CO., LTD.

Face velocity

SPL IN EACH CENTER FREQUENCY (dB)

x EMF

* SPL = 10 * LOG ( 10^ 0.1(PWL1)+10^0.1(PWL2)...+10^0.1(PWL8))

SPL = 31.7 dBA

SPL = SOUND PRESSURE LEVEL

TL = TRANSMISSION LOSS

NOTE : THIS RESULT IS NOT CONCERNED TO BACKGROUND NOISE AND THE OTHER OPEN AREA.




SUPPLY AIR

COMPARISION EQUIPMENT, NC REQUIRED

50

60

70

80

90

S U R E

L E V E L ( d B )

NOISE IN NC CURVE

NOISE FROM

MACHINE

NOISE LEVEL

(AFTER BY CAL.)

NC50

NC55

NC60

NC65

OCTAVE BAND (Hz) Total

63 125 250 500 1000 2000 4000 8000

NOISE FROM MACHINE 75 80 76 76 72 69 64 58 78

NOISE LEVEL (AFTER BY CAL.) 36 40 38 28 17 10 10 11 32

NOISE TARGET NC30 57 48 41 35 31 29 28 27


DESCRIPTION SPL in each center frequency : dB flat

(dBA)

0

10

20

30

40

63 125 250 500 1000 2000 4000 8000

S O U N D

P R E S

NOISE TARGET

NC30

NC20

NC25

NC30

NC35

NC40

NC45

FREQURNCY (Hz)



TABLE 2 :CALCULATION FOR NOISE BY USING ACOUSTIC SILENCER.

NOISE TARGET : NC30


RETURN AIR AIR FLOW VOLUME = 7,400.0 3.49



OCTAVE BAND (Hz) 63 125 250 500 1000 2000 4000 8000


DISTANCE LOSS IN DUCT WORK 0 0 0 -1 -2 -3 -3 -3

TOTAL NOISE 75 80 76 75 70 66 61 55


TOTAL NOISE 65 62 47 31 18 17 25 31




TOTAL NOISE 38 37 30 22 24 18 10 11





Face velocity


x EMF


SPL (dBA) 15 24 24 22 27 22 14 13


SPL = 31.6 dBA







RETURN AIR


50

60

70

80

90

S U R E

L E V E L ( d B )

NOISE IN NC CURVE

NOISE FROM

MACHINE

NOISE LEVEL

(AFTER BY CAL.)

NC50

NC55

NC60

NC65


63 125 250 500 1000 2000 4000 8000



NOISE TARGET NC30 57 48 41 35 31 29 28 27



(dBA)

0

10

20

30

40

63 125 250 500 1000 2000 4000 8000

S O U N D

P R E S

NOISE TARGET

NC30

NC20

NC25

NC30

NC35

NC40

NC45

FREQURNCY (Hz)




NOISE TARGET : NC30




TABLE 1 : CALCULATION FOR NOISE BY USING ACOUSTIC SILENCER.

NOISE TARGET : NC30


SUPPLY AIR AIR FLOW VOLUME = 16,700.0 7.88



OCTAVE BAND (Hz) 63 125 250 500 1000 2000 4000 8000



TOTAL NOISE 74 63 53 34 19 14 21 19




TOTAL NOISE 42 35 34 19 18 12 4 0




SPL (dBA) 19 22 28 19 21 16 8 2



Face velocity


x EMF


SPL = 30.4 dBA







SUPPLY AIR


50

60

70

80

90

S U R E

L E V E L ( d B )

NOISE IN NC CURVE

NOISE FROM

MACHINE

NOISE LEVEL

(AFTER BY CAL.)

NC50

NC55

NC60

NC65


63 125 250 500 1000 2000 4000 8000



NOISE TARGET NC30 57 48 41 35 31 29 28 27



(dBA)

0

10

20

30

40

63 125 250 500 1000 2000 4000 8000

S O U N D

P R E S

NOISE TARGET

NC30

NC20

NC25

NC30

NC35

NC40

NC45

FREQURNCY (Hz)



TABLE 2 :CALCULATION FOR NOISE BY USING ACOUSTIC SILENCER.

NOISE TARGET : NC30


RETURN AIR AIR FLOW VOLUME = 16,700.0 7.88



OCTAVE BAND (Hz) 63 125 250 500 1000 2000 4000 8000


DISTANCE LOSS IN DUCT WORK 0 0 0 -1 -2 -3 -3 -3

TOTAL NOISE 82 75 72 67 65 59 52 41


TOTAL NOISE 72 57 43 23 13 10 16 17




TOTAL NOISE 45 32 27 21 25 19 9 3





Face velocity


x EMF


SPL (dBA) 22 19 21 21 28 23 13 5


SPL = 31.3 dBA







RETURN AIR


50

60

70

80

90

S U R E

L E V E L ( d B )

NOISE IN NC CURVE

NOISE FROM

MACHINE

NOISE LEVEL

(AFTER BY CAL.)

NC50

NC55

NC60

NC65


63 125 250 500 1000 2000 4000 8000



NOISE TARGET NC30 57 48 41 35 31 29 28 27



(dBA)

0

10

20

30

40

63 125 250 500 1000 2000 4000 8000

S O U N D

P R E S

NOISE TARGET

NC30

NC20

NC25

NC30

NC35

NC40

NC45

FREQURNCY (Hz)



4. F



ITEM PROJECT NAME PRODUCTS

1 SIRIRAJ HOSPITAL DUCT SILENCER

2 TV CITY ACOUSTIC DOOR

3 DUCT SILENCER

4 LAND & HOUSES SOUND PROOF FOR RESIDANCE

5 SOUND PROOF FOR CHILLER ROOM

6 SOUND PROOF FOR RESIDANCE

7 SOUND PROOF FOR NGV STATION

8 NIHON PLAST FACTORY DUCT SILENCER

9 MTEC ENGINE TEST ROOM

10 SGI POWER PLANT ACOUSTIC MUFFLER

11 EXCHANGE TOWER (AHU ROOM) SOUND PROOF FOR AHU ROOM

12 ACOUSTIC DOOR

13 EXCHANGE TOWER (LIFT MOTOR ROOM) SOUND PROOF FOR LIFT MOTOR ROOM

14 EXXON MOBIL QHL DUCT SILENCER

15 DUCT SILENCER

16 ATC COMPLEX DUCT SILENCER, ACOUSTIC DOOR

17 TOTL DUCT SILENCER

18 . 109 DUCT SILENCER

19 JOHNSON & JOHNSON PIPE LAGGING

20 TESCO LOTUS ACOUSTIC WALL

21 PAERNELLY 61 DUCT SILENCER

22 TEST ROOM

23 DUCT SILENCER

24 SF CINEMA JUNGCEYLON DUCT SILENCER

25 NGV STATION SOUND PROOF FOR NGV STATION

26 ATHENEE TOWER SOUND PROOF FOR MACHINE ROOM

27 SHANGRI-LA CHIANGMAI SOUND PROOF FOR COOLING TOWER

28 FASCO MOTOR DUCT SILENCER

29 SIAM CITY CEMENT SOUN PROOF FOR AHU ROOM

30 ENGLAND EMBASSY ACOUSTIC DOOR


PROJECT REFERENCE 2007

Page 1 of 4






31 SHANGRI-LA BANGKOK DUCT SILENCER

32 TOYOTA MOTOR SOUND PROOF FOR MACHINE ROOM

33 ACOUSTIC DOOR

34 SOFITEL SUKHUMVIT DUCT SILENCER

35 GAYSORN ACOUSTIC MATERIAL

Page 2 of 4




1 ACOUSTICS MATERIAL

2 JOHNSON & JOHNSON ACOUSTICS ENCLOSURE

3 BIESEN DUCT SILENCER

4 EXCHANG TOWER ACOUSTICS DOOR

5 AUSTRALIAN ACOUSTICS DOOR

6 CRE-FUL COMPANY ACOUSTICS MATERIAL

7 DUCT SILENCER

8 SOUND PROOF FOR GENERATOR ROOM

9 GRAND HYATT ERAWAN DUCT SILENCER

10 HONDA (HRST) SOUND PROOF FOR GENERATOR ROOM

11 DUCT SILENCER


13 PTTUT CUP II ACOUSTICS LOUVER

14 DUCT SILENCER

15 ASIA CENTER SOUND PROOF FOR MACHINE ROOM

16 ASOKE COMPLEX SOUND PROOF FOR CHILLER ROOM

17 EIGHT THONGLOR SOUND PROOF FOR MACHINE ROOM

18 SOUND PROOF FOR MACHINE ROOM

19 SERVER ROOM BANGKOKBANK DUCT SILENCER

20 ABB BANGPOO SOUND PROOF FOR MACHINE ROOM

21 DUCT SILENCER

22 THAI SHINRYO DUCT SILENCER

23 FDK SOUND LAB TEST

24 DUCT SILENCER

25 SWATCH GROUP SOUND PROOF FOR MACHINE ROOM

26 MIGP SOUND PROOF FOR MACHINE ROOM


28 DUCT SILENCER

29 DUCT SILENCER

30 PHILIPPINES ACOUSTICS DOOR



Page 3 of 4







32 SOUND PROOF FOR AHU ROOM

33 SOUND PROOF FOR GENERATOR ROOM

34 BLOWER ROOM (ADIYA GROUP) SOUND PROOF FOR BLOWER ROOM

35 & SOUND PROOF FOR AHU ROOM

36 AOT DUCT SILENCER FOR VENTILATION FAN

37 4 DUCT SILENCER

38 ASIA CENTER DUCT SILENCER

39 SFX-PATAYA DUCT SILENCER

40 DUCT SILENCER

41 ROYAL MANEEYA DUCT SILENCER

42 . ACOUSTICS DOOR

43 . ACOUSTICS DOOR


45 JOHNSON & JOHNSON PIPE LAGGING

46 BLOWDOWN SILENCER

proposal_duct silencer ม.ศิลปากร

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