Title: Unit 3 Glossary
Course: HAC 131 Refrigeration & Air Conditioning 1 > Section: HAC 131 Refrigeration & Air Conditioning 1

Unit 3 Glossary

Terms

Term | Definitions
Absolute zero | the point in which all molecular activity stops.
BTU | the amount of heat required to raise 1lb of water 1 degree F. BTU stands for British Thermal Unit.
Compound Gauge | reads psig pressure above zero up to 120psi and in a vacuum below zero.
Conduction | the energy traveling from one molecule to another.
Convection | the means of transferring heat from one location to another by means of a fluid medium.
High pressure gauge | reads up to 500psi and only above 0.
Latent Heat | a change in state without a changed in temperature. Also known as hidden heat.
Pressure | force per unit area.
Radiation | Heat traveling through space and heating objects as it passes across them.
Sensible heat | when a level of heat intensity changes and can be measured.
Temperature | the amount of heat a substance contains also referred to as heat intensity.