Introduction
Air Conditioning is perhaps one of the most wonderful scientific inventions that provided relief to the people living in a hot climate. What started as a device for cooling homes was later extended to vehicles that have a closed structure. For a layman, it appears that an air conditioner cools the air. However, scientifically speaking, the air conditioner provides cooling by transferring heat from the air inside the thermally insulated place to the air present outdoor by the medium of “refrigerant”. The phenomenon of heat transfer involves three physical processes: evaporation, compression, and condensation (“How Does an Air Conditioner Work?”). Firstly, ...