QOD For W/E 12-18-11 #1

Continuing with some old cooling system questions …

Q. A cooling system refrigerant should have all of the following properties except?

Your question expresses the ideal.

Ammonia based systems are common and propane makes a great refrigerant.

The correct answer is … D. does not vaporize

A refrigerant must vaporize in order for the system to work

That wraps up the heating and cooling questions