Low Sound Solutions

The A dvanced T echnology Low Sound Solutions CONFIDENTIAL This document is the property of EVAPCO, Inc. It should not be copied or disclosed without prior written authorization.

Same Great AT Features and Benefits Low Energy Consumption Low Sound Options A dvanced T echnology LOW SOUND SOLUTIONS

Sound Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Sound

Sound Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Sound

Sound Basics Uncertainty in Measuring Sound Pressure Levels. Octave Band Frequency Testing Tolerance* (dB) 63 ± 5 125 ± 3 250 ± 2 500 ± 1.5 1000 ± 1.5 2000 ± 1.5 4000 ± 1.5 8000 ± 2.5 * per ISO standard 3744 Sound

Sound Basics ,[object Object],[object Object],[object Object],Sound !

Sound Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Sound

Features and Benefits ,[object Object],A dvanced T echnology LOW SOUND SOLUTIONS EVAPCO ® Induced Draft Products are the Quietest in the Industry ,[object Object]

SUPER Low Sound Fan – A dvanced T echnology LOW SOUND SOLUTIONS 9 to 15 dB(A) Reduction! 9 to 15 dB(A) Reduction!

SUPER Low Sound Fan – ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS 9 to 15 dB(A) Reduction! Dimensional Impact Construction Thermal Performance

SUPER Low Sound Fan – A dvanced T echnology LOW SOUND SOLUTIONS 8 to 13 dB(A) Reduction! Just BIGGER!

Features and Benefits ,[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS EVAPCO ® Induced Draft Products are the Quietest in the Industry ,[object Object]

Low Sound Fan – A dvanced T echnology LOW SOUND SOLUTIONS 4 to 7 dB(A) Reduction 4 to 7 dB(A) Reduction! ,[object Object],[object Object],[object Object],[object Object],[object Object],Dimensional Impact Construction Thermal Performance

Features and Benefits ,[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS EVAPCO ® Induced Draft Products are the Quietest in the Industry ,[object Object]

Discharge Attenuation – ,[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS Up to 10 dB(A) Reduction Up to 10 dB(A) Reduction!

Discharge Attenuation – ,[object Object],[object Object],[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS Up to 10 dB(A) Reduction Dimensional Impact Construction Thermal Performance

A dvanced T echnology LOW SOUND SOLUTIONS EVAPCO ® Induced Draft Products are the Quietest in the Industry ,[object Object],[object Object],[object Object],[object Object],[object Object],Features and Benefits

EVAPCO Water Silencers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS Dimensional Impact Construction Thermal Performance

EVAPCO Water Silencers Measured at 5 ft (1.5m) from air inlet A dvanced T echnology LOW SOUND SOLUTIONS Fans at Full Speed 4 – 7 dB(A) reduction  Fans at Half Speed 7 – 10 dB(A) reduction  Fans Off 9 - 12 dB(A) reduction 

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS 300 Ton Cooling Tower Conditions: 900 gpm, 95/85/78 (300 Nominal Tons) Selection: (1) AT 19-612 8.5’ x 12’ plan area (1) 20 HP Motor

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS Model AT 19-612 Standard Sound Data 20 HP (15kW) BAND END SIDE TOP 63 Hz 78 78 80 125 Hz 81 81 86 250 Hz 81 81 86 500 Hz 75 76 80 1k Hz 72 73 75 2k Hz 69 71 73 4k Hz 72 72 71 8k Hz 73 73 68 dB(A) 80 81 83 Model AT 19-612 with Water Silencers 20 HP (15kW) BAND END SIDE TOP 63 Hz 78 78 80 125 Hz 81 81 86 250 Hz 81 81 86 500 Hz 74 76 80 1k Hz 67 70 75 2k Hz 62 66 73 4k Hz 63 64 71 8k Hz 64 65 68 dB(A) 76 77 83 80 – 76 = 4 dB(A) 72 – 63 = 9 dB

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS Model AT 19-612 SUPER Low Sound Fan 20 HP (15kW) BAND END SIDE TOP 63 Hz 74 77 74 125 Hz 70 72 79 250 Hz 68 66 69 500 Hz 69 69 66 1k Hz 71 71 66 2k Hz 69 70 65 4k Hz 72 71 63 8k Hz 73 73 65 dB(A) 78 78 72 Model AT 19-612 Standard Sound Data 20 HP (15kW) BAND END SIDE TOP 63 Hz 78 78 80 125 Hz 81 81 86 250 Hz 81 81 86 500 Hz 75 76 80 1k Hz 72 73 75 2k Hz 69 71 73 4k Hz 72 72 71 8k Hz 73 73 68 dB(A) 80 81 83 83 – 72 = 11 dB(A)

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS Model AT 19-612 SUPER Low Sound Fan & Water Silencers 20 HP (15kW) BAND END SIDE TOP 63 Hz 74 73 74 125 Hz 70 76 79 250 Hz 68 69 69 500 Hz 63 68 65 1k Hz 63 67 65 2k Hz 61 65 64 4k Hz 63 63 62 8k Hz 64 65 63 dB(A) 70 73 72 Model AT 19-612 Standard Sound Data 20 HP (15kW) BAND END SIDE TOP 63 Hz 78 78 80 125 Hz 81 81 86 250 Hz 81 81 86 500 Hz 75 76 80 1k Hz 72 73 75 2k Hz 69 71 73 4k Hz 72 72 71 8k Hz 73 73 68 dB(A) 80 81 83

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS Model AT 19-612 SUPER Low Sound Fan & Water Silencers 20 HP (15kW) BAND END SIDE TOP 63 Hz 74 73 74 125 Hz 70 76 79 250 Hz 68 69 69 500 Hz 63 68 65 1k Hz 63 67 65 2k Hz 61 65 64 4k Hz 63 63 62 8k Hz 64 65 63 dB(A) 70 73 72 Induced Draft Brand “B” Induced Draft EVAPCO Model 3333A/Q Crossflow Unit with Low Sound Fan 20 HP (15kW) BAND END SIDE TOP 63 Hz 63 56 55 125 Hz 63 65 73 250 Hz 68 68 80 500 Hz 68 71 74 1k Hz 70 74 76 2k Hz 67 73 77 4k Hz 60 66 74 8k Hz 54 61 70 dB(A) 73 78 82

Octave Band Sound Analysis – 5ft. (1.5m) data A dvanced T echnology LOW SOUND SOLUTIONS Model LSTA 8P-125 Standard Sound Data 50 HP (37kW) BAND End Fan Side TOP 63 Hz 77 79 77 125 Hz 74 77 77 250 Hz 69 76 76 500 Hz 69 77 78 1k Hz 68 75 74 2k Hz 65 73 71 4k Hz 62 70 71 8k Hz 57 66 71 dB(A) 73 80 80 Model AT 19-612 SUPER Low Sound Fan & Water Silencers 20 HP (15kW) BAND END SIDE TOP 63 Hz 74 73 74 125 Hz 70 76 79 250 Hz 68 69 69 500 Hz 63 68 65 1k Hz 63 67 65 2k Hz 61 65 64 4k Hz 63 63 62 8k Hz 64 65 63 dB(A) 70 73 72 Forced Draft Induced Draft

Life Cycle Cost Comparison A dvanced T echnology LOW SOUND SOLUTIONS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],$ 1,500 $ 7,050 Annual Energy Savings Total Fan Power Cost / yr = $ 4700 Total Fan Power Cost / yr = $ 11,750 $0.09 / kWh and 3500 hours per year (40% usage rate)

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS SUPER Low Sound Fan(s):

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS Specify Sound Data 5’ above Fan Discharge at Full Speed Verification of Supplier Data 45 ° 5 ’ Microphone Position

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS Specify Sound Data 5’ above Fan Discharge at Full Speed ,[object Object]

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS Specify Sound Data 5’ above Fan Discharge at Full Speed 45 ° 5 ’ Verification of Supplier Data 5 ’ Not Here Property Line Not Here Microphone Position

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS Specify Sound Data 5’ above Fan Discharge at Full Speed ,[object Object],[object Object],[object Object],[object Object]

Suggested Mechanical Specification A dvanced T echnology LOW SOUND SOLUTIONS ,[object Object],[object Object],[object Object],High Frequency Self Attenuating Not Here Microphone Position Low-Mid Frequencies Specify Sound Data 5’ above Fan Discharge at Full Speed Property Line *Seelbach & Oran, What to do about Cooling Tower Noise , Industrial Acoustics Co., Inc., 1998. Not Here

Retro-Fit Applications ,[object Object],[object Object],[object Object],[object Object],[object Object],Sound ,[object Object],[object Object]

Success Story Success Story A dvanced T echnology LOW SOUND SOLUTIONS

Success Story ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS

Success Story Two Cooling Towers: 8’x24’ and 8’x18’ - 4 Fans Total - 20 Hp Each A dvanced T echnology LOW SOUND SOLUTIONS ,[object Object],[object Object],[object Object]

Success Story ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A dvanced T echnology LOW SOUND SOLUTIONS

Success Story ,[object Object],A dvanced T echnology LOW SOUND SOLUTIONS Cerami & Associates – New York, NY

Success Story ,[object Object],Cerami & Associates, Inc. Acoustical Engineers, Project # 14810 A dvanced T echnology LOW SOUND SOLUTIONS REDUCTION – 5ft Above Top Tower: 8’x24’ 8’x18’ BAND 5 ft. 5 ft. 63 Hz 14 11 125 Hz 14 21 250 Hz 18 19 500 Hz 19 25 1k Hz 14 21 2k Hz 12 16 4k Hz 17 15 8k Hz 13 9 dB(A) 15 21 INITIAL SOUND – 5ft Above Top Tower: 8’x24’ 8’x18’ BAND 5 ft. 5 ft. 63 Hz 92 93 125 Hz 91 98 250 Hz 89 92 500 Hz 87 93 1k Hz 83 90 2k Hz 79 82 4k Hz 73 75 8k Hz 64 67 dB(A) 89 94

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Conclusions A dvanced T echnology LOW SOUND SOLUTIONS EVAPCO ® Induced Draft Products are the Quietest in the Industry

A dvanced T echnology LOW SOUND SOLUTIONS

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Low Sound Solutions

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