Trane TRG-TRC011-EN manual High-temperature high-temperature Generatorgenerator pump

Page 34

period two

Absorption Chiller Types

notes

high-temperature high-temperature

generatorgenerator pump

high-temperature
heat exchanger	Figure 34
	Figure 34

The high-temperature generator pump draws a portion of the intermediate solution from the low-temperature generator and delivers it to the high- temperature generator to be reconcentrated.

This cooler intermediate solution passes through the high-temperature heat exchanger to be preheated by the hot concentrated solution returning from the high-temperature generator. This reduces the heat energy required to boil the refrigerant inside the high-temperature generator. Precooling the concentrated solution returning to the absorber reduces the flow rate of cooling water required through the absorber.

The precooled, concentrated solution leaving the high-temperature heat exchanger then mixes with the rest of the intermediate solution that is returning from the low-temperature generator, before traveling to the low-temperature heat exchanger.

TRG-TRC011-EN

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Contents Air Conditioning Clinic Absorption Water Chillers Absorption Water Chillers Preface Contents TRG-TRC004-EN Introduction TRG-TRC011-EN Absorption Refrigeration Cycle Period onePeriod one Reject heat Heat energy Absorption System Fluids High affinity for water refrigerant Components of the Absorption Cycle Conditions Steam or Hot waterrefrigerant vapor Generator Condenser Refrigerant then flows into the evaporator pan Absorber spray pump Solution Heat Exchanger Dilute Generator pump Equilibrium Chart Heat Solution temperature Absorption Chiller Types Period twoSingle-Effect Chiller Absorber Evaporator spray pump Spray pump Generator pump Double-Effect Chiller Vapor Low Temperature condenser Cooling Generator Water Evaporator Absorber Low-temperature generator pump Generator pump Absorption Chiller Types Direct-Fired Chiller Evaporator High-temperature high-temperature Generatorgenerator pump Chiller/Heater Absorption Chiller Types Changeover Absorption Chiller Types Capacity Control Period threePeriod three Energy valve Generator Crystallization 10C 37.8C Capacity Control Capacity Control Capacity Control Heat exchanger bypass Evaporator pan Purge System Isolation valve Maintenance Considerations Period fourPeriod four Maintenance Considerations Test run with alternate fuel, if dual-fuel burner Maintenance Considerations Maintenance Considerations Corrosion inhibitor and performance additive recommendations Application Considerations Period fiveCooling-Water Temperature Limitations Combination Chiller Plants 58F Special Considerations for Direct-Fired Chillers Application Considerations Equipment Rating Standards Review Period sixPeriod six Review Review Review Quiz Questions for PeriodQuiz TRG-TRC011-EN Answers Glossary Glossary Glossary Trane Company