Exam 21: Evaporators and the Refrigeration System

____ is the best method of checking to see when a refrigerant coil has a proper level of refrigerant.

The ____ of the liquid refrigerant determines the coil operating temperature.

To check the performance of a dry-type evaporator, the service technician would first make sure that the refrigerant coil is operating with enough liquid inside.

A refrigeration system designed for the storage of flowers or candy is considered a ____ type.

As a rule of thumb, the temperature of the evaporator should be about ____________________°F colder than the box temperature.

The household refrigerator fresh-food compartment is a good example of ____ refrigeration.

Low-temperature food storage applications generally start at ____.

Every central split cooling system manufactured in the USA today must have a Seasonal Energy Efficiency Ratio (SEER) of at least 10.

High-temperature refrigeration applications will normally provide box temperatures of ____.

Define superheat.

If the application requires a coil design to operate below freezing, there must be provision for ____.

SEER is calculated based on the total amount of cooling the system will provide over the entire season, divided by the total number of ____________________ it will consume.

The ____ in a refrigeration system is responsible for absorbing heat into the system from whatever medium is to be cooled.

The refrigeration evaporator is a component that absorbs heat from the conditioned space into the refrigeration system.

A typical superheat for an evaporator operating under normal conditions would be ____.

A stamped plate evaporator usually does not use a fan to move air across it.

A direct expansion-type evaporator is also called a ____.

What are some typical problems on the liquid side of a liquid cooling evaporator?

Define saturated vapor.

The capacity (tonnage) of the heat exchanger can vary with its height and depth.