Exam 3: Refrigeration and Refrigerants

The compressor in a refrigeration system ____.

The temperature inside the refrigerator fresh food section should be about ____.

The evaporator in a refrigeration system must be colder than the refrigerated space in order to absorb heat.

Vapor is more dense than liquid and, as the liquid refrigerant boils, it has a tendency to sink.

The only location where the refrigerant vapor is superheated is in the evaporator.

Refrigeration can be described as ____.

The halide leak detector should be used in well ventilated areas as the resulting blue or green flame indicates that phosgene gas is being produced.

High temperature refrigeration is that produced by ____.

When the refrigerant leaves the metering device, it is not 100% liquid. Why?

The law requires technicians to recover refrigerant from all refrigeration systems so that they ____.

Modern refrigerators have become state-of-the-art appliances and some models even include automatic beverage and ice dispensers, built in television screens and connections to the World Wide Web.

The ____ relationship correlates the vapor pressure and the boiling point of water and is the basis for controlling the cooling system's temperatures.

Good ventilation is important when working around refrigeration equipment because modern refrigerants ____.

Only liquid refrigerant should enter the metering device.

What happens when room temperature soda is poured into a glass of ice?

Which of the following refrigerants has the lowest boiling temperatures at atmospheric pressure?

Ice melts in iceboxes because ____.