TRG-TRC003-EN iii
Contents
period one Heat and Refrigeration ....................................... 1
What is Heat? ......................................................... 2
Principles of Heat Transfer ...................................... 4
period two Refrigerants ............................................................ 9
Change of Phase ................................................... 12
Modern Refrigerants ............................................. 16
period three Refrigeration Cycle ............................................ 17
Closing the Cycle .................................................. 18
Basic Refrigeration System .................................... 22
period four Pressure–Enthalpy Chart ................................. 26
period five Review ................................................................... 35
Quiz ......................................................................... 39
Answers ................................................................ 42
Glossary ................................................................ 44
