Basic Refrigeration & Charging Procedures CD
By John Tomczyk
The CD has an excellent explanation of the basic refrigeration cycle and of superheat and of subcooling. It has good sample problems that work you through the solutions. There's a good quiz after each section. There is far too much material for one session. Do only one section at one sitting, and then read the corresponding section in the book.
States and conditions
Application of pressures, states, and conditions
Subcooling and Superheating
Preventing liquid line flash
How much subcooling is needed?
Liquid pressure amplification and superheat suppression
Enviroguard ™ refrigerant control system
Thermostatic expansion valves
Automatic expansion valves
Capillary tubes or fixed orifice refrigeration systems
Capillary tubes or fixed orifice air conditioning systems
LAMA Books, 510-785-1091, 888-452-6244