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Can ASHRAE Standard 62-1989 Requirements be Satisfied while Maintaining Moisture Control using Stock HVAC Equipment in Hot, Humid Climates?
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Outdoor air intake rates are studied to determine their impacts on moisture control in buildings, especially in hot, humid climates. Key impacts of outdoor air intake rates can be readily modeled and studied using computer simulations of building energy costs. Increased ventilation rates create real capital and operating costs for building owners and operators, with implications beyond energy costs relating to increased ventilation requirements. In hot, humid climates, increased ventilation rates increase latent loads more than sensible loads, requiring lower sensible heat ratios. Stock HVAC package units and split systems are not available with the requisite sensible heat ratios, and cannot maintain moisture control in small commercial buildings without costly modifications.
Turner, S. C. (1996). Can ASHRAE Standard 62-1989 Requirements be Satisfied while Maintaining Moisture Control using Stock HVAC Equipment in Hot, Humid Climates?. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from