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Water drop size numerical optimization for hydrosolar roof

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URI: http://hdl.handle.net/10317/8652
ISBN: 88-900893-X
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Author
Lucas Miralles, Manuel; Martínez Martínez, Pedro; Sánchez Kaiser, Antonio; Viedma Robles, Antonio; Zamora Parra, Blas
Knowledge Area
Mecánica de Fluidos
Sponsors
The authors wish to acknowledge the collaboration in the calculations of A. Navarro, as well as José María Galán, Energy, Comfort and Environment S.L. manager, as proposer of the original idea.
Publication date
2002
Publisher
ISES
Bibliographic Citation
Lucas, M.; Martínez, P.; Kaiser, A.S.; Viedma, A. y Zamora, B. “Water drop size numerical optimization for hydrosolas roof”. En: Eurosun 2002: 4th ISES (International Solar Energy Society) Europe Solar Congress, Bolonia, 23-26 de junio 2002.
Keywords
Drop size
Air-conditioning
Solar chimney
Cooling tower
Solar energy
Abstract
Air-conditioning systems of buildings and other industrial facilities commonly use water as a heat drain to remove heat from refrigerant condensers. Classical solutions to reduce the temperature of this service water are air cooled heat exchangers or mechanical draught cooling towers. The Hydrosolar Roof optimized in this paper, working as a heat focus in the thermodynamic cycle of a heat pump, achieves the same objectives without fan energy consump tion. This system consists of an extended framework on the roof of the building with some thermal plates installed over it. Some of the plates are made of a high reflective material, and the others are made of absorbent material. The Hydrosolar Roof uses the design of the reflective and absorbent parts of the device, made of flat plates, to form a sloping channel. Solar radiation is collected by this channel and, due to local heating in this zone, natural convection through it is produced. The natural induced air flow is irrigated ...
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