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Title:
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Design of a dual flow photovoltaic/thermal combi panel
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Author(s):
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Published by:
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Publication date:
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ECN
Energy in the Built Environment
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1-11-2002
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ECN report number:
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Document type:
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ECN-RX--02-047
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Conference Paper
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Number of pages:
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Full text:
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4
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Download PDF
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Presented at: PV in Europe - From PV Technology to Energy Solutions Conference and Exhibition, Rome, Italy, 7-11 oktober 2002.
Abstract:
A prototype of a dual flow photovoltaic/thermal combi panel has beendesigned and built. In addition, a numerical model of this prototype
has been developed, which predicts the thermal efficiency of the prototype.
The model predicts a thermal efficiency at zero reduced temperature
of n0 = 0.67, and a heat loss coefficient of UL
= 5.3 Wm.-2K-1. The thermal efficiency has also
been measured in a combined indoor/outdoor test setup, resulting in
measured values of n0 = 0.70 ± 0.06 and UL = 5.1
± 0.8 Wm-2K-1. Both values are in good agreement
with the model predictions. Finally, the influence of the glass and
water layers on the electrical efficiency of the prototype has been
measured in a flash test. In conclusion, the dual flow photovoltaic/thermaI
comhi panel has been found to perform as predicted by the model, and
with a higher thermal efficiency than other combi panel concepts. However,
the concept
remains heavy and fragile, and is therefore in its present form not
feasible for large scale applications.
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