Trane trg-trc005-en manual Centrifugal Fan Air-Cooled Condenser, Evaporative Condenser

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period two

Condensers

notes

Centrifugal Fan Air-Cooled Condenser

condenser coil

centrifugal fan

Figure 11

An alternative air-cooled condenser uses a centrifugal fan to draw or blow air over the condensing coil. The principal advantage of this design is that the centrifugal fan is capable of overcoming the higher static-pressure losses associated with ductwork. Therefore, if the condenser is to be located indoors and uses a duct system to deliver air to and from the condenser coil, the centrifugal fan air-cooled condenser is probably best suited for this application.

Evaporative Condenser

fan

refrigerant vapor

condenser coil

 

sump

pump

 

 

liquid refrigerant

subcooler

Figure 12

Evaporative Condensers

A modification of the air-cooled condenser is the evaporative condenser. Within this device, the refrigerant flows through tubes and air is drawn or blown over the tubes by a fan. The difference is that water is sprayed on the tube surfaces. As the air passes over the coil, it causes a small portion of the water to evaporate. This evaporation process absorbs heat from the coil,

TRG-TRC005-EN

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Contents Air Conditioning Clinic Refrigeration System Components Comment Card One of the Fundamental SeriesBusiness Reply Mail Refrigeration System Components Preface Refrigeration System ComponentsContents TRG-TRC005-EN Introduction Vapor-Compression RefrigerationRefrigeration Cycle Refrigeration CyclePeriod one Condenser Air-Cooled Condensers CondensersAir-Cooled Condenser Effect of Subcooling Evaporative Condensers Centrifugal Fan Air-Cooled CondenserEvaporative Condenser Water-Cooled Condenser Water-Cooled CondensersCooling Tower Condenser Control Condenser ControlCondenser Capacity Condensing Temperature Control Vary Entering Water Temperature Vary Condenser Water Flow RateCooling Tower Bypass Air-Cooled Condenser Control Condenser Flooding ControlCondensers Finned-Tube Evaporators EvaporatorsFinned-Tube Evaporator Turbulent Flow Superheat Shell-and-Tube Evaporator Shell-and-Tube EvaporatorsEvaporator Control Evaporator ControlFinned-Tube Evaporator Control Face-Split Arrangement80ºF Intertwined Arrangement Row-Split Arrangement Shell-and-Tube Evaporator Control Expansion Devices Expansion DeviceThermostatic Expansion Valve TXV ControlTXV TXV TXV Operation Psia TXV Superheat Setting Too much superheatSolenoid Valve AccessoriesSolenoid Valve Period five Liquid-Line Filter Drier Liquid-Line Filter DrierSealed type Moisture-Indicating Sight Glass Moisture-Indicating Sight GlassSuction Line Filter Suction Line FilterHot Gas Muffler Hot Gas MufflerShutoff Valve Shutoff ValveAccess Port Access PortReview Review-Period OneReview-Period Two Air-cooled condenserReview-Period Three Review-Period FourReview-Period Five For more information, refer to the following references Quiz Questions for PeriodQuiz Answers To C To GGlossary Glossary Glossary Trane Company

trg-trc005-en specifications

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