Collector Efficiency Testing — Reduction of Test Duration by Usinga2-Node Collector Model

Fischer, Stephan; Steinhagen, H. Muller

doi:10.1007/978-3-540-75997-3_137

Proceedings of ISES World Congress 2007 (Vol. I – Vol. V) 2008

DOI: 10.1007/978-3-540-75997-3_137

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Collector Efficiency Testing — Reduction of Test Duration by Usinga2-Node Collector Model

Stephan Fischer

H. Muller Steinhagen

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Testing of solar thermal collectors under transient conditions

Osório

Carvalho

2014

Solar Energy

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The most important standard for collector testing in Europe is the EN 12975:2006 which is applied in all the major laboratories and is the reference for the Solar Keymark certification. Besides the steady-state method, the EN 12975 allows the application of the quasidynamic method performed outdoors in natural conditions with variable radiation and ambient temperature. The available number of days for each test was investigated by analyzing meteorological data series acquired in the Solar Energy Laboratory (LES) in Lisbon since 2008 showing the advantage of the quasi-dynamic test. Both the steady-state and the quasi-dynamic methods were applied to five collectors of different types (two flat plate collectors, one evacuated tube collector with a back reflector and direct flow circulation, one evacuated tube collector with heat pipes, and a CPC collector). The results were compared and a good agreement between the steadystate and the quasi-dynamic test results was observed. Issues concerning the incidence angle modifiers and the effective thermal capacity of the collectors were analyzed in detail, which resulted in the identification of model and test limitations. Suggestions are given to improve the test methodology and the data analysis of quasi-dynamic test.

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Testing of solar thermal collectors under transient conditions

Osório

Carvalho

2014

Solar Energy

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Design and Thermal Performance Test of a Solar Photovoltaic/Thermal (PV/T) Collector

Jiang¹,

Seng²,

Hua³

et al. 2016

JOCET

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Collector Efficiency Testing — Reduction of Test Duration by Usinga2-Node Collector Model

Cited by 2 publications

References 0 publications

Testing of solar thermal collectors under transient conditions

Testing of solar thermal collectors under transient conditions

Design and Thermal Performance Test of a Solar Photovoltaic/Thermal (PV/T) Collector

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