Transcription of Air Conditioning Psychrometrics - CED Engineering
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Air Conditioning Psychrometrics - CED Engineering
Air Conditioning Psychrometrics Course No: M05-005 Credit: 5 PDH A. Bhatia Continuing Education and Development, Stonewall CourtWoodcliff Lake, NJ 07677P: (877) AIRCONDITIONING Psychrometrics AIR Conditioning Psychrometrics In air- Conditioning system, the air must undergo one or several of the following processes: Psychrometrics can be used to predict changes in the environment when the amount of heat and/or moisture in the air changes. Use of psychrometric analysis is also important to determine the volume flow rates of air to be pushed into the ducting system and the sizing of the major system components. Approaches to Temperature Control Temperature control in an air Conditioning system is achieved by passing the air through the cooling or heating coil, which may use any of the following approaches: 1.
Dry air - exists when all of the contaminants and water vapor have been removed from atmospheric air. By volume, dry air contains about 78 percent nitrogen, 21 percent oxygen, and 1 percent other gases. Dry air is used as the reference in psychrometrics. 3. Moist air - is a mixture of dry air and water vapor.
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