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KIRKPATRICK, Allan; MALMSTRÖM, Tor; KNAPPMILLER, Kevin. Use of low temperature air for cooling of building. In: BUILDING SIMULATION, 2., 1991, Nice. Anais... Nice, 1991. p. 62-66.
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Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
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Dados do autor na base InfoHab:
Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
Citações: Nenhuma citação encontrada
Índice h: Indice h não calculado  
Co-autores: Nenhum co-autor encontrado

Abstract

The topic of this paper is the use of low temperature air (40 F or 5 C) for room cooling. Cold air systems can offer energy and space savings relative to higher temperature cooling systems. As the supply temperature and flowrate are reduced, considerations such as adequate flowrate, jet dumping or separation, condensation on duct walls, and decreased relative humidity become increasingly important. Cold air jet separation from the ceiling can be a problem resulting in unacceptable thermal discomfort in the occupied zone. In the paper, the behavior of cold air jets , including throw and separation, is examined. A simple jet model is presented, and throw and separation point relationships are developed. The results from the ideal jet model suggest that for the same cooling capacity, the resulting room air motion, jet throw, and jet separation point will be the same for both conventional and cold air jets if the jet momentum is held constant.
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