Final Exam Practice - Refrigeration Concepts

These flashcards cover key terminology and concepts related to refrigeration systems and their components, as discussed in the final exam practice notes.

Film Factor

The relationship between the medium giving up heat and the heat-exchange surface.

Expansion Device

A component that produces a reduction in the pressure on the liquid refrigerant and regulates its flow into the evaporator.

Pressure-Limiting TXV (Thermostatic Expansion Valve)

A device that helps maintain the suction pressure to the compressor in low temperature applications.

Capillary Tube

A tube that is used to regulate refrigerant flow into the evaporator and lower the pressure of the liquid refrigerant.

Thermostatic Expansion Valve

A valve that meters refrigerant flow to the evaporator based on the evaporator suction line superheat.

Suction Pressure

The pressure in a refrigeration system that can affect performance, especially during low temperature applications.

Scroll Compressor

A type of compressor that is a variant of the reciprocating compressor.

SEER (Seasonal Energy Efficiency Ratio)

A measure of the efficiency of central split cooling systems, which must be at least 10 in the USA.

Evaporative Condenser

A condenser that may require freeze protection when used in cold climates.

Heat-Exchange Surface

The area where heat transfer occurs between the refrigerant and the surrounding environment.