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TECHNICAL PAPERS

Studies of Heat Pumps Using Direct Expansion Type Solar Collectors

[+] Author and Article Information
Sadasuke Ito, Naokatsu Miura, Yasushi Takano

Department of System Design Engineering, Kanagawa Institute of Technology, Atsugi, 243-0292 Japane-mail: ito@sd.kanagawa-it.ac.jp

J. Sol. Energy Eng 127(1), 60-64 (Feb 07, 2005) (5 pages) doi:10.1115/1.1824102 History: Received October 21, 2003; Revised July 30, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Figures

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Panels used as evaporators
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Variation of temperatures at various locations, tw,1=40°C
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Variation of COP and heat gain of water
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Experimental results of the system using Type 1 panels
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Experimental results of the system using Type 2 panels
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Relation between COP and the temperatures at the outlet of the expansion valve
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Variation of the temperatures at various locations when the feeler bulb was set at the location 0.6 m apart from the outlet of the evaporator
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Relation between COP and evaporation temperature
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Variation of evaporation temperature

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