ESCO Air Conditioning Practice Exam

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What is a common use for a liquid to suction heat exchanger in an air conditioning system?

Decrease evaporator pressure
Increase liquid subcooling
Decrease condenser pressure
Increase superheat

The correct answer is: Decrease evaporator pressure

A common use for a liquid to suction heat exchanger in an air conditioning system is to decrease the evaporator pressure. This type of heat exchanger helps to subcool the liquid refrigerant exiting the condenser by transferring heat from the warmer liquid line to the colder suction line. By decreasing the evaporator pressure, the system can operate more efficiently by maintaining the desired temperature levels and improving the overall performance of the air conditioning system.