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Direct Expansion Air Conditioning System Selection for Hot & Humid Climates
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This paper discusses some of the difficulties of selecting direct expansion (DX) air conditioning systems to dehumidify conditioned spaces in hot & humid climates. It is a common opinion among designers that concerns of humidity control are best addressed with chilled water system. While chilled water systems provide some advantages over DX systems, DX systems can provide humidity control in many applications. Common problems, methods of humidity control analysis, and some solutions to common problems are discussed. Most of the information presented here has previously been documented in the literature and in ASHRAE handbooks. Additional information on interactions of previously documented observations is discussed.
Browning, B. K. (2002). Direct Expansion Air Conditioning System Selection for Hot & Humid Climates. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from