Exam 26: Application of Refrigeration Systems

The precharged tubing used for installing refrigeration piping is called a ____ .

Where can a condensing unit be located?

When purchase cost alone is considered in selecting refrigeration equipment, the equipment may not perform acceptably .

In condensate removal, the drain lines should be sloped downward about ____ in. per foot for proper drainage.

Retail stores use ____________________ refrigeration units for merchandising their products.

An open case is more efficient than a closed case.

What are the two alternative means of disposing of the condensate that is gathered on the evaporator of all refrigeration equipment ?

Self-contained equipment normally plugs into either a 120-V or 230-V electrical outlet.

The most popular secondary fluid currently used in refrigeration systems is ____ .

All refrigeration equipment must have some means for disposing of the ____________________ that is gathered on the evaporator.

Refrigerated air driers are normally self-contained refrigeration systems that may be air cooled or water cooled.

Heaters that are made with resistance-type wire run just under the surface of the cabinet are called ____ heaters .

When the inside of the evaporator cabinet is below freezing, heat has to be provided to keep the condensate in the line ____________________ .

Knock-down walk-in coolers are constructed of interlocking panels from ____ thick .

The three-way heat reclaim valves in most heat reclaim systems are ____ operated.

When a parallel heat reclaim system is used, the heat reclaim condenser must be sized to handle ____% of the refrigeration system's rejected heat when in the heat reclaim mode.

One of the advantages of parallel compressor systems is ____ .

One of the disadvantages of the secondary-fluid refrigeration systems is ____ .

The air used for "pneumatic controls" must be ____ .

Why is the hot gas bypass valve in a refrigerated air drier called a pressure regulator ?