CHAPTER 52
AIR CONDITIONERS AND REFRIGERATORS
A typical person in modern society may spend upto 90% of each day indoors. It is not surprising, therefore, that providing a healthy, comfortable indoor environment has become a major factor in our economy.
To an average person, air conditioning simply means “the cooling of air”. This definition is neither sufficiently useful nor accurate. To be more precise, air conditioning is the process of treating air in an internal environment to establish and maintain required standards of temperature, humidity, cleanliness, and motion. Most air conditioning systems are used for either human comfort or for process control.
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