Transcription of HVAC Air Handling Unit Design Considerations
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HVAC Air Handling Unit Design Considerations
PDHonline Course M250 (4 PDH) hvac Air Handling Unit Design Considerations2012 Instructor: A. Bhatia, Online | PDH Center5272 Meadow Estates DriveFairfax, VA 22030-6658 Phone & Fax: Approved Continuing Education PDH Course M250 hvac Air Handling Unit Design Considerations A. Bhatia, SECTION -1 AIR- Handling UNIT OVERVIEW An air Handling unit often abbreviated as AHU, is a factory fabricated assembly consisting of fan, heating and/or cooling coils, filters, dampers and other necessary equipment to perform one or more of the following functions of circulating, cleaning, heating, cooling, humidifying, dehumidifying, and mixing of air. Air Handling systems range in complexity from stand-alone units that serve individual rooms to large, centrally controlled systems serving multiple areas in a building. hvac engineers refer to the areas served by an air Handling system as zones.
HVAC engineers use “Psychrometric” analysis for sizing the coils and for estimating the air flow rates required to be pushed into the ducting system. The psychrometric chart, a graphical representation of the thermodynamic properties of moist air, is an invaluable aid in illustrating and solving air conditioning problems.
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