Can you survive cold winter days and nights without your heater on? Can you imagine the hot summer months without your air cooling system running all day long? If you can’t, you might want to thank the person who invented the air conditioning system. He made our lives easier and more comfortable.
Air conditioning is the technique of regulating the condition of air for a more comfortable environment for man or industrial products. Four physical properties of air are controlled in air conditioning. These are air temperature, relative humidity, air motion or circulation and the dust particles in air. A control of these four properties is necessary in air conditioning for the consideration of human comfort. Even more precise control over these properties is required in the operation of some industrial air conditioning units. Other properties like odor and air pressure are further controlled in some specific industries.