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Roberts, Jon; Brandemuehl, Michael; Burch, Jay. Venting overheat protection in solar water heaters. 2005 SOLAR WORLD CONGRESS, 2005, Orlando, Flórida.
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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

Dados do autor na base InfoHab:
Número de Trabalhos: 2 (Nenhum com arquivo PDF disponível)
Citações: 2
Índice h: 1  
Co-autores: 3

Resumo

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Abstract

Solar water heaters made from low-cost plastics show promise for ignificantly reducing collector costs but generally require some form of overheat protection (OHP). This paper summarizes an experimental investigation and validated model of venting OHP for a range of vent configurations. A lobal correlation relating overall vent performance to key design variables is also suggested. Results show that simple design changes dramatically impact vent performance, with the weak natural convection driving forces easily constrained for negligible heat rejection. Existing design “intuition” fails here; the original vent system tested had high performance expectations but increased overall ICS heat loss by only 8% (24 W/m2). Making a few simple modifications to the vent configuration increased OHP heat rejection by nearly a factor of 7 to 162 W/m2. Modeling predicts optimal vent performance of 400 W/m2. Data can be extrapolated to backside venting (500 W/m2 potential) or combined front/backside venting (900 W/m2 potential).
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