Refrigeration and air conditioning systems work by removing heat from an enclosed space using a refrigeration cycle. This involves phase changes of refrigerants and the transfer of heat between different components like compressors, condensers, expansion devices, and evaporators. Proper maintenance and repair is needed to ensure refrigeration and AC systems operate efficiently and safely.

1. Refrigeration
and
Air-Conditioning
Lecture-4
Mechanical Engg. Department
Geeta Engineering College
Naultha Panipat

4. Numerical