Product Features/Extras

Low Sound Solutions

Low Sound Solutions

Low Sound Solutions

EVAPCO’s induced draft counterflow product lines are now available with an expanded line of equipment options to reduce the overall sound generated from the side or top of the unit. Each option provides various levels of sound reduction, and most can be used in combination to provide the lowest sound levels available in the industry. Performance is CTI Certified on all induced draft cooling towers and closed circuit coolers. Consult EVAPCO’s evapSelect selection software for unit sound levels or a full octave band data sheet. If a detailed analysis is required for your application, please consult your EVAPCO sales representative.

EVAPCO’s forced draft counterflow product lines are available with Super Low Sound Fan Technology. For the first time, forced draft axial fan products are available with sound levels comparable to a centrifugal fan at a raction of the power consumption. Consult EVAPCO’s evapSelect selection software for unit sound levels or a full octave band data sheet. If a detailed analysis is required for your application, please consult your EVAPCO sales representative.

Super Low Sound Fan

AT, MT & ES Series

The EVAPCO Super Low Sound Fan utilises an extremely wide chord blade design for sound sensitive applications where the lowest sound levels are desired. The fan is one-piece molded heavy duty FRP construction utilising a forward swept blade design. The EVAPCO Super Low Sound Fan is capable of reducing unit sound pressure levels 9 db(A) to 15 db(A), depending upon specific unit selection and measurement location. The EVAPCO Super Low Sound Fan is optional on ALL Induced Draft Cooling Towers, ATWB, eco-ATWB, eco-ATWB-E, MTW and ESWB Closed Circuit Coolers and ATC-E, cATC, eco-ATC and MTC-A Evaporative Condensers 2.24 metres wide and larger.

PM Series

The Forced Draft Axial Fan Cooling Tower, Closed Circuit Cooler, and Evaporative Condenser is now available with Super Low Sound Fans. The one piece heavy duty fans built of FRP construction reduce sound levels 10 db(A) to 13 db(A) on the fan side versus traditional PM towers, coolers and condensers. The EVAPCO Super Low Sound Fan is standard on ALL PMTQ Cooling Towers & PMWQ Closed Circuit Coolers, and optional on ALL PMC-E Evaporative Condensers 3 metres wide and larger.

Low Sound Fan

AT, MT & ES Series

The EVAPCO Low Sound Fan utilises a wide chord blade design for sound sensitive applications where low sound levels are desired. The fan is a unique soft connect blade-to-hub design which eliminates critical blade passing frequencies at any speed. The Low Sound Fan is capable of reducing the unit sound pressure levels 4 db(A) to 7 db(A), depending upon specific unit selection and measurement location. The EVAPCO Low Sound Fan is optional on ALL Induced Draft Cooling Towers, ATWB, cATWB, eco-ATWB, eco-ATWB-E, MTW and ESWB Closed Circuit Coolers and ATC-E, cATC, eco-ATC and MTC-A Evaporative Condensers. *The Low Sound Fan will have a CTI Certified thermal performance derate up to 3.5%. Consult the factory or EVAPCO’s evapSelect selection software for actual thermal performance.

Fan Discharge Sound Attenuation

Fan Discharge Sound Attenuation is a factory assembled straight sided discharge hood designed to reduce overall discharge sound levels 5 db(A) to 10 db(A), depending on specific unit selection and measurement location. It is constructed of G-235 galvanised steel as standard (stainless steel construction also available) and includes acoustically lined fiberglass walls and a low pressure drop baffling system. The discharge attenuation option is supported entirely by the unit and is shipped as an assembled section for easy field mounting. Fan Discharge Sound Attenuation is optional on AT and cAT Cooling Towers, ATWB, cATWB, eco-ATWB, eco-ATWB-E and ESWB Closed Circuit Coolers and ATC-E, cATC and eco-ATC Evaporative Condensers.

*Fan Discharge Sound Attenuation will have a CTI Certified thermal performance derate up to 5%. Consult the factory or EVAPCO’s evapSelect selection software for actual thermal performance.

Water Silencers

Water Silencers are located in the falling water area of the cold water basin. They are constructed of lightweight PVC sections and can be easily removed for access to the basin area. The water silencers reduce high frequency noise associated with the falling water and are capable of reducing overall sound levels 4 db(A) to 7 db(A) measured at 1.5 m: from the side or end of the unit and 9 db(A) to 12 db(A)

when water is circulated with the fan(s) off. Water Silencers are optional on ALL Induced Draft Cooling Towers, ATWB, cATWB, eco-ATWB, eco-ATWB-E and MTW Closed Circuit Coolers and ATC-E, cATC, eco-ATC and MTC-A Evaporative Condensers 2.24 metres wide and larger.

Super Low Sound Axial Propeller Fan(s)

Unit shall be provided with Super Low Sound Fan(s) in order to assure a maximum sound pressure level not to exceed __dB(A) measured 5 feet (1.5m) above the fan discharge cylinder during full speed operation.

Fans shall be high efficiency axial propeller type with non-corrosive FRP hub and blade construction. The one-piece molded heavy duty fan construction utilises a forward swept blade design for superior sound quality. Each fan shall be statically balanced and installed in a closely fitted cowl with venturi air inlet for maximum fan efficiency. The fan cowl shall be covered with a heavy gauge hot dip galvanised (or Type 304 stainless) steel fan guard.

There shall be no performance derate when utilising the Super Low Sound Fan.

Low Sound Axial Propeller Fan(s)

Unit shall be provided with Low Sound Fan(s) in order to assure a maximum sound pressure level not to exceed __dB(A) measured 5 feet (1.5m) above the fan discharge cylinder during full speed operation.

Fans shall be high efficiency axial propeller type with aluminum wide chord blade construction. Each fan shall be statically balanced and installed in a closely fitted cowl with venturi air inlet for maximum fan efficiency. The fan cowl shall be covered with a heavy gauge hot dip galvanised (or Type 304 stainless) steel fan guard.

There shall be maximum 3.5% performance derate when utilising the Low Sound Fan.

Fan Discharge Sound Attenuation

Unit shall be provided with a factory assembled straight-sided discharge sound attenuation package designed to reduce overall discharge sound levels. The discharge attenuator shall be supported entirely by the unit and shipped as an assembled section for easy mounting in the field. The attenuator shall be constructed of G-235/Z-725 galvanised (or Type 304 or 316 stainless) steel and includes insulated walls and baffles acoustically lined with high-density fiberglass. The discharge attenuator shall be covered by a heavy gauge hot dip galvanised (or Type 304 stainless) steel fan guard to prevent debris from entering the attenuator.

Water Silencers

Unit shall be provided with water silencers located in the falling water area of the cold water basin. The water silencers shall be constructed of lightweight PVC in easily handled sections for ease of removal and access to the basin area.
 

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