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ECN publication
The thermal and electrical yield of a PV-thermal collector
Zondag, H.A.; Helden, W.G.J. van; Vries, D.W. de; Steenhoven, A.A. van; Zolingen, R.J.C. van
Published by: Publication date:
ECN Energy in the Built Environment 1-12-2002
ECN report number: Document type:
ECN-RX--02-066 Article (scientific)
Number of pages:

Published in: Solar Energy, Vol. 72, no. 2, p. 113-128. ISSN 0038-092X (), , , Vol., p.-.

Four numerical models have been built for the simulation of the thermalyield of a combined PV-thermal collector: a 3D dynamical model and three steady state models that are 3D, 2D and 1D. The models are explained and the results are compared to experimental results. It is found that all models follow the experiments within 5% accuracy. In addition, for the calculation of the daily yield, the simple 1D steady state model performs almost as good as the much more time-consuming 3D dynamical model. On the other hand, the 2D and 3D models are more easily adapted to other configuations and provide more detailed information, as required for a further optimization of the collector. The time-dependent model is required for an accurate prediction of the collector yield if the collector temperature at the end of a measurement differs from its starting temperature.

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