Experimental performance evaluation and comparative analyses of heat pipe and direct flow augmented solar collectors

Dan Nchelatebe Nkwetta, Mervyn Smyth, Fariborz Haghighat, Aggelos Zacharopoulos, Trevor Hyde

Research output: Contribution to journalArticle

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Abstract

Experimental performance evaluation and comparative analyses of two different types of internal concentrator augmented solar collectors; the evacuated tube heat pipe solar collector array with either an evacuated or non-evacuated direct flow or heat pipe internal concentrator augmented collectors based on heat extraction methods are presented in this paper. To effectively analysis and compare these systems under similar operating conditions, experimental results are presented in the form of temperature response (inlet and outlet temperature increase, outlet and inlet temperature differential, mean temperature differential at the start and end of the experimental test periods), heat flow rates and collection efficiency plotted against experimental test time. This analytical method shows the merits and demerits of each solar collector operating under variable conditions and indicates the best application area for each system. The evacuated and non-evacuated heat pipe augmented concentrators proved to be better options for medium temperature applications due to higher temperature response, lower heat losses and higher collection efficiencies.
LanguageEnglish
Pages225-233
JournalApplied Thermal Engineering
Volume60
Issue number1-2
DOIs
Publication statusPublished - 2 Oct 2013

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Solar collectors
Heat pipes
Temperature
Heat losses
Flow rate
Heat transfer

Cite this

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Experimental performance evaluation and comparative analyses of heat pipe and direct flow augmented solar collectors. / Nkwetta, Dan Nchelatebe; Smyth, Mervyn; Haghighat, Fariborz; Zacharopoulos, Aggelos; Hyde, Trevor.

Vol. 60, No. 1-2, 02.10.2013, p. 225-233.

Research output: Contribution to journalArticle

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AU - Hyde, Trevor

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