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InGreen Technology Inc. is dedicated to developing innovative products to control noise and vibration. We possess the Successful experience of supplying with our products to the well known clients, such as GE, SIEMENS, MDS, ALSTOM, Mitsubishi Hitachi, MTU, CENCO, etc.

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    Ottawa, ON K2B 5B6
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Matrix Silencers

Matrix silencer is a patent design (patent No. ZL 2005 20021593.6) and has been applied to various engineering instance.

Matrix silencers are rectangular columns arranged in array and filled on the inside with ultra-thin glass fiber pillow wrapped by glass fiber fabric. The spacing between silencers allows air flow to pass. Each end of the silencer is supported by structural hollow section.

 

Name Available Value(s)

Matrix silencers are rectangular columns arranged in array and filled on the inside with ultra-thin glass fiber pillow wrapped by glass fiber fabric. The spacing between silencers allows air flow to pass. Each end of the silencer is supported by structural hollow section. The specifications of column cross sections are 320 mm x 320 mm /480 mm x 480 mm. The shape of air defector cap is designed on the basis of twisted pair curve and punched model. And the silencing part in the column is constructed through bending over punching plate and then biting both ends into a hollow square section. Steel shell functions as sound proofing and external protection. Various materials (carbon steel, galvanized steel, stainless steel, etc.) are available for silencer parts (column punching plate, front deflector cap, front section frame, and external shell) to meet particular specification requirements. The matrix silencer would extend its shell life up to 10 years when used in working conditions without direct sunlight and rain. The stainless steel shall be used as a material replacement in corrosive salt fog at sea or extremely damp conditions

Two matrix silencer models:  CLJZ32 and CLJZ48 with the section of 320*320 and 480*480 respectively. The matrix silencer interacts with the low and middle frequency components of the noise spectrum with a reduction value of 45-65dB (A). The twisted pair air dynamic design is beneficial to maintain low pressure drop (with a flow ratio of 45%, which is adjustable when necessary).

 Sound Attenuation for model LJZ32:

               Frequency (Hz)

Model

63

125

250

500

1000

2000

4000

8000

2000mm

36.1

39.6

45.0

59.9

63.5

67.4

56.1

49.1

4000mm

45.0

51.0

74.9

82.4

87.4

85.5

70.4

65.1

 

  Sound Attenuation for model CLJZ48:

               Frequency (Hz)

Model

63

125

250

500

1000

2000

4000

8000

2000mm

37.6

44.3

47.0

49.3

46.0

43.7

42.0

35.5

4000mm

45.0

66.1

77.2

82.6

72.6

64.1

59.8

45.9

 

 

The CLJZ32/48 Matrix Silencer, made of stainless steel, is applicable for temperature ranging from -40 to 550 Celsius and for application environment as sea, coast, damp area and acid rain region, etc. While as for those dry continental regions, galvanized material should be used as a replacement. Matrix silencer is also suitable for noise reduction of gas turbine, aero engine test bed, marine naval ship, and enclosure outlet or exhaust at high temperature, with an ultra-short silencing length of only 2,000mm~4,000mm.

 

  • Blower, Axial blower
  • Aviation Testing bed
  • Ship power system
  • Air compressor
  • Air conditioner
  • Backup power system
  • Mineral ventilation
  • Cooling tower
  • High temperature equipment
  • Centre air conditioner of Hotel, building
  • Subway ventilation
  • Kitchen ventilation

There are different sound spectrum among different equipment, different power, or different manufacture brand.

The following data are the reference based on the experience. The accurate test data will be tested in the real life of operation, which is used to reduce the cost and select the most suitable silencer.

          Frequency (Hz)

 

63

125

250

500

1000

2000

4000

8000

Noise Level (dB)

Diesel engine

104

93

95

101

102

99

96

92

98

Axial blower

109

96

102

93

111

103

97

90

82

High-pressure blower

113

108

108

100

108

107

104

96

89

Turbine blower

119

106

103

108

115

118

115

107

100

Mineral Vent blower

113

98

103

109

112

111

97

90

82

     The noise value measured from equipment according to the octave band minus the sound attenuation from silencer, and get the noise reduction value. The noise reduction is calculated based on A-weighted sound level. 

CLJZ32 Silencer:

          Frequency (Hz)

 

63

125

250

500

1000

2000

4000

8000

Noise Level (dB)

2000mm noise reduction

 

36.1

39.6

45.0

59.9

63.5

67.4

56.1

49.1

Diesel engine

52

56.9

55.4

56

42.1

35.5

28.6

35.9

48.9

Axial blower

51

59.9

62.4

48

51.1

39.5

29.6

33.9

32.9

High-pressure blower

55

71.9

68.4

55

48.1

43.5

36.6

39.9

39.9

Turbine blower

61

69.9

63.4

63

55.1

54.5

47.6

50.9

50.9

Mineral Vent blower

58

61.9

63.4

64

52.1

47.5

29.6

33.9

32.9

Noise reduction dBA:55, 58, 58, 58, 55

 

          Frequency (Hz)

 

63

125

250

500

1000

2000

4000

8000

Noise Level (dB)

2000mm noise reduction

 

45.0

51.0

74.9

82.0

87.4

85.5

70.4

65.1

Diesel engine

35

48

44

26.1

20

11.6

10.5

21.6

32.9

Axial blower

36

51

51

18.1

29

15.6

11.5

19.6

16.9

High-pressure blower

43

63

57

25.1

26

19.6

18.5

25.6

23.9

Turbine blower

43

61

52

33.1

33

30.6

29.5

36.6

34.9

Mineral Vent blower

38

53

52

34.1

30

23.6

11.5

19.6

16.9

Noise reduction dBA:69, 73, 70, 76, 75

After the treatment of CLLZ32 Matrix silencer with 2m long, and it can achieve the noise control requirement. For noise level over 125 dBA, such as testing bed for aviation engine, ship power, and missile engine, 4m long silencer will be considered. For the low frequency, which is under 250Hz, or according to customer’s requirement, CLJZ48 is suitable choice.

When it is main middle and high-frequency noise, and the amount of sound attenuation is required below 40 dBA, the general choice is CLLG08 / CLLG12 series tube silencer, otherwise to choose CLJZ32 / CLJZ48 series matrix silencer. According to the noise spectrum, noise requirements, basic acoustic estimation, and A sound level, to determine the length of silencer 2000mm/4000mm.

According to the air flow rate, in the air intake or inlet system, the reverse air flow will reduce the noise 5-10 dBA. If it is used for medium and high frequency noise from the equipment, the noise reduction will be calculated as 60 dBA for matrix silencer; if it is used for medium and low frequency noise, the noise reduction will be calculated as 50 dBA. In the air outlet or exhaust system, noise will reduce 5-10 dBA with the same as air flow direction. When it is used for medium and high frequency noise, the noise reduction will be calculated as 50 dBA; if it is used for low frequency noise, the noise reduction will be calculated as 40 dBA. Above estimation will secure the calculation, and make sure the final engineering conduction to achieve the requirement. For the large noise control required projects, in order to save the project cost, calculation should follow the octave band accurately to reduce the engineering work.

Second, the model selection, it is based on the nominal flow and the maximum flow resistant (or pressures drop).  From the model list, make selection according to the flow resistant, and then select silencer model based on the flow rate. If the flow resistant value is between the two range, select the silencer model based on the flow rate from two columns. Also, it can be estimate based on the linearly proportional to the flow rate. The flow rate should not exceed the value in the table.

Third, if the silencer is install outside, should weather or environment conditions, to add louver, and filtration system for the intake or inlet system.

 

Sku List

Sku Name Width (mm) Height (mm) Length (mm) Weight (kg) Flange width (mm) Circulation area (m2) Flow m3/s (Flow Resistance Pa) Flow resistance (160 Pa) (m3/s) Flow resistance (280 Pa) (m3/s) Flow resistance (440 Pa) (m3/s) Flow resistance (630 Pa) (m3/s) Flow resistance (860 Pa) (m3/s) Flow resistance (75 Pa) (m3/s) Flow resistance (165 Pa) (m3/s) Flow resistance (290 Pa) (m3/s) Flow resistance (460 Pa) (m3/s) Flow resistance (660 Pa) (m3/s) Flow resistance (900 Pa) (m3/s)
CLJZ32-1/1 CLJZ32-1/1 600 600 2310 328.80 50 0.07 0.74(70), 1.11(160), 1.48(280), 1.85(440), 2.22(630), 2.59(860) 1.11 1.48 1.85 2.22 2.59 - - - - - -
CLJZ32-2/1 CLJZ32-2/1 1020 600 2310 402.20 50 0.15 1.48(70), 2.96(160), 2.96(280), 3.7(440), 4.44(630), 5.18(860) 2.96 2.96 3.7 4.44 5.18 - - - - - -
CLJZ32-3/1 CLJZ32-3/1 1440 600 2310 556.00 50 0.22 2.22(70), 4.44(160), 4.44(280), 5.55(440), 6.66(630), 7.77(860) 4.44 4.44 5.55 6.66 7.77 - - - - - -
CLJZ32-4/1 CLJZ32-4/1 1860 600 2310 658.80 50 0.30 2.96(70), 5.92(160), 5.92(280), 7.4(440), 8.88(630), 10.36(860) 5.92 5.92 7.4 8.88 10.36 - - - - - -
CLJZ32-2/2 CLJZ32-2/2 1020 1020 2310 554.00 50 0.30 2.96(70), 5.92(160), 5.92(280), 7.4(440), 8.88(630), 10.36(860) 5.92 5.92 7.4 8.88 10.36 - - - - - -
CLJZ32-5/1 CLJZ32-5/1 2360 680 2310 892.30 80 0.37 0.37(70), 3.7(160), 7.4(280), 7.4(440), 9.25(630), 11.1(860) 3.7 7.4 7.4 9.25 11.1 - - - - - -
CLJZ32-6/1 CLJZ32-6/1 2780 680 2310 1011.70 80 0.44 4.44(70), 8.88(160), 8.88(280), 11.1(440), 13.32(630), 15.54(860) 8.88 8.88 11.1 13.32 15.54 - - - - - -
CLJZ32-3/2 CLJZ32-6/1 1520 1100 2310 900.00 80 0.44 4.44(70), 8.88(160), 8.88(280), 11.1(440), 13.32(630), 15.54(860) 8.88 8.88 11.1 13.32 15.54 - - - - - -
CLJZ32-4/2 CLJZ32-4/2 1940 1100 2310 1106.80 80 0.59 5.92(70), 11.84(160), 11.84(280), 14.8(440), 17.76(630), 20.72(860) 11.84 11.84 14.8 17.76 20.72 - - - - - -
CLJZ32-5/2 CLJZ32-5/2 2360 1100 2310 1235.00 80 0.74 7.4(70), 14.8(160), 14.8(280), 18.5(440), 22.2(630), 25.9(860) 14.8 14.8 18.5 22.2 25.9 - - - - - -
CLJZ32-6/2 CLJZ32-6/2 2780 1100 2310 1414.30 80 0.89 8.88(70), 17.76(160), 17.76(280), 22.2(440), 26.64(630), 31.08(860) 17.76 17.76 22.2 26.64 31.08 - - - - - -
CLJZ32-4/3 CLJZ32-4/3 1940 1520 2310 1329.00 80 0.89 8.88(70), 17.76(160), 17.76(280), 22.2(440), 26.64(630), 31.08(860) 17.76 17.76 22.2 26.64 31.08 - - - - - -
CLJZ32-7/2 CLJZ32-7/2 3200 1100 2310 1585.30 80 1.04 10.36(70), 20.72(160), 20.72(280), 25.9(440), 31.08(630), 36.26(860) 20.72 20.72 25.9 31.08 36.26 - - - - - -
CLJZ32-5/3 CLJZ32-5/3 2360 1520 2310 1543.50 80 1.11 11.1(70), 22.2(160), 22.2(280), 27.75(440), 33.3(630), 38.85(860) 22.2 22.2 27.75 33.3 38.85 - - - - - -
CLJZ32-8/2 CLJZ32-8/2 3620 1100 2310 1756.30 80 1.18 11.84(70), 23.68(160), 23.68(280), 29.6(440), 35.52(630), 41.44(860) 23.68 23.68 29.6 35.52 41.44 - - - - - -
CLJZ32-4/4 CLJZ32-4/4 1940 1940 2310 1655.30 80 1.18 11.84(70), 23.68(160), 23.68(280), 29.6(440), 35.52(630), 41.44(860) 23.68 23.68 29.6 35.52 41.44 - - - - - -
CLJZ32-9/2 CLJZ32-9/2 4040 1100 2310 1927.30 80 1.33 13.32(70), 26.64(160), 26.64(280), 33.3(440), 39.96(630), 46.62(860) 26.64 26.64 33.3 39.96 46.62 - - - - - -
CLJZ32-6/3 CLJZ32-6/3 2780 1520 2310 1758.00 80 1.33 13.32(70), 26.64(160), 26.64(280), 33.3(440), 39.96(630), 46.62(860) 26.64 26.64 33.3 39.96 46.62 - - - - - -
CLJZ32-5/4 CLJZ32-5/4 2360 1940 2310 1948.10 80 1.48 14.8(70), 29.6(160), 29.6(280), 37(440), 44.4(630), 51.8(860) 29.6 29.6 37 44.4 51.8 - - - - - -
CLJZ32-7/3 CLJZ32-7/3 3200 1520 2310 1972.50 80 1.55 15.54(70), 31.08(160), 31.08(280), 38.85(440), 46.62(630), 54.39(860) 31.08 31.08 38.85 46.62 54.39 - - - - - -
CLJZ32-8/3 CLJZ32-8/3 3620 2780 2310 2187.00 80 1.78 17.76(70), 35.52(160), 35.52(280), 44.4(440), 53.28(630), 62.16(860) 35.52 35.52 44.4 53.28 62.16 - - - - - -
CLJZ32-6/4 CLJZ32-6/4 2780 1940 2310 2257.60 80 1.78 17.76(70), 35.52(160), 35.52(280), 44.4(440), 53.28(630), 62.16(860) 35.52 35.52 44.4 53.28 62.16 - - - - - -
CLJZ32-5/5 CLJZ32-5/5 2360 2360 2310 2217.40 80 1.85 18.5(70), 37(160), 37(280), 46.25(440), 55.5(630), 64.75(860) 37 37 46.25 55.5 64.75 - - - - - -
CLJZ32-9/3 CLJZ32-9/3 4040 1520 2310 2401.50 80 2.00 19.98(70), 39.96(160), 39.96(280), 49.95(440), 59.94(630), 69.93(860) 39.96 39.96 49.95 59.94 69.93 - - - - - -
CLJZ32-7/4 CLJZ32-7/4 3200 1940 2310 2567.10 80 2.07 20.72(70), 41.44(160), 41.44(280), 51.8(440), 62.16(630), 72.52(860) 41.44 41.44 51.8 62.16 72.52 - - - - - -
CLJZ32-6/5 CLJZ32-6/5 2780 2360 2310 2659.30 80 2.22 22.2(70), 44.4(160), 44.4(280), 55.5(440), 66.6(630), 77.7(860) 44.4 44.4 55.5 66.6 77.7 - - - - - -
CLJZ32-8/4 CLJZ32-8/4 3620 1940 2310 2876.60 80 2.37 23.68(70), 47.36(160), 47.36(280), 59.2(440), 71.04(630), 82.88(860) 47.36 47.36 59.2 71.04 82.88 - - - - - -
CLJZ32-7/5 CLJZ32-7/5 3200 2360 2310 3014.80 80 2.59 23.68(70), 47.36(160), 47.36(280), 59.2(440), 71.04(630), 82.88(860) 51.8 51.8 64.75 77.7 90.65 - - - - - -
CLJZ32-6/6 CLJZ32-6/6 2780 2780 2310 3046.20 80 2.66 26.64(70), 53.28(160), 66.6(280), 66.6(440), 79.92(630), 93.24(860) 53.28 66.6 66.6 79.92 93.24 - - - - - -
CLJZ32-7/6 CLJZ32-7/6 3200 2780 2310 3433.10 80 3.11 31.08(70), 62.16(160), 62.16(280), 77.7(440), 93.24(630), 108.78(860) 62.16 62.16 77.7 93.24 108.78 - - - - - -
CLJZ32-9/5 CLJZ32-9/5 4120 2440 2310 4117.50 100 3.33 33.3(70), 66.6(160), 66.6(280), 83.25(440), 99.9(630), 116.55(860) 66.6 66.6 83.25 99.9 116.55 - - - - - -
CLJZ32-7/7 CLJZ32-7/7 3280 3280 2310 4274.10 100 3.63 36.26(70), 72.52(160), 72.52(280), 90.65(440), 108.78(630), 126.91(860) 72.52 72.52 90.65 108.78 126.91 - - - - - -
CLJZ32-10/5 CLJZ32-10/5 4540 2440 2310 4521.20 100 3.70 37(70), 74(160), 74(280), 92.5(440), 111(630), 129.5(860) 74 74 92.5 111 129.5 - - - - - -
CLJZ32-9/6 CLJZ32-9/6 4120 2860 2310 4519.10 100 4.00 39.96(70), 70.92(160), 79.92(280), 99.9(440), 119.88(630), 139.86(860) 70.92 79.92 99.9 119.88 139.86 - - - - - -
CLJZ32-8/7 CLJZ32-8/7 3700 3280 2310 4778.60 100 4.14 41.44(70), 82.88(160), 82.88(280), 103.6(440), 124.32(630), 145.04(860) 82.88 82.88 103.6 124.32 145.04 - - - - - -
CLJZ32-10/6 CLJZ32-10/6 4540 2860 2310 5010.90 100 4.44 44.4(70), 88.8(160), 88.8(280), 111(440), 133.2(630), 155.4(860) 88.8 88.8 111 133.2 155.4 - - - - - -
CLJZ32-8/8 CLJZ32-8/8 2700 3700 2310 5220.30 100 4.74 47.36(70), 94.72(160), 94.72(280), 118.4(440), 142.08(630), 165.76(860) 94.72 94.72 118.4 142.08 165.76 - - - - - -

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