Trane trg-trc005-en manual Water-Cooled Condensers

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period two

Condensers

notes

causing the refrigerant vapor within the tubes to condense. The remaining water then falls to the sump to be recirculated and used again.

Subcooling of the refrigerant can be accomplished by piping the condensed liquid back through another few rows of coil tubing, located either in the condenser airstream or in the water sump, where additional heat transfer reduces the temperature of the liquid refrigerant.

Water-Cooled Condenser

hot, refrigerant vapor

95ºF

[35ºC]

cooling water

85ºF

 

 

 

[29ºC]

 

subcooled, liquid

subcooler

 

 

 

 

 

 

 

refrigerant

 

 

 

 

 

 

 

Figure 13

Water-Cooled Condensers

The shell-and-tube is the most common type of water-cooled condenser. With this design, water is pumped through the tubes while the refrigerant vapor fills the shell space surrounding the tubes. As heat is transferred from the refrigerant to the water, the refrigerant vapor condenses on the tube surfaces. The condensed liquid refrigerant then falls to the bottom of the shell, where it flows through an enclosure that contains additional tubes (the subcooler). More heat is transferred from the liquid refrigerant to the water inside these tubes, subcooling the refrigerant.

After the warm water leaves the condenser, it must either be disposed of (as in the case of using water from a well) or it must be cooled before it can be reused by the condenser. In this example, the condenser brings in 85°F [29°C] water and warms it up to 95°F [35°C]. Before this water can be used again, it must be cooled back down to 85°F [29°C].

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TRG-TRC005-EN

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Contents Air Conditioning Clinic Refrigeration System Components One of the Fundamental Series Comment CardBusiness Reply Mail Refrigeration System Components Refrigeration System Components PrefaceContents TRG-TRC005-EN Vapor-Compression Refrigeration IntroductionRefrigeration Cycle Refrigeration CyclePeriod one Condenser Condensers Air-Cooled CondenserAir-Cooled Condensers Effect of Subcooling Centrifugal Fan Air-Cooled Condenser Evaporative CondenserEvaporative Condensers Water-Cooled Condensers Water-Cooled CondenserCooling Tower Condenser Control Condenser CapacityCondenser Control Condensing Temperature Control Vary Condenser Water Flow Rate Vary Entering Water TemperatureCooling Tower Bypass Condenser Flooding Control Air-Cooled Condenser ControlCondensers Evaporators Finned-Tube EvaporatorFinned-Tube Evaporators Turbulent Flow Superheat Shell-and-Tube Evaporators Shell-and-Tube EvaporatorEvaporator Control Evaporator ControlFace-Split Arrangement Finned-Tube Evaporator Control80ºF Intertwined Arrangement Row-Split Arrangement Shell-and-Tube Evaporator Control Expansion Device Expansion DevicesTXV Control Thermostatic Expansion ValveTXV TXV TXV Operation Psia TXV Too much superheat Superheat SettingAccessories Solenoid ValveSolenoid 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-Period One ReviewAir-cooled condenser Review-Period TwoReview-Period Four Review-Period ThreeReview-Period Five For more information, refer to the following references Questions for Period QuizQuiz To C To G AnswersGlossary Glossary Glossary Trane Company

trg-trc005-en specifications

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