 Experimental studies of a new solar water heater system using a solar water pumpNatthaphon Roonprasang, Pichai Namprakai and Naris Pratinthong Energy, 2008, vol. 33, issue 4, 639-646 Abstract: The research goal was to develop a new solar water heater system (SWHS) that used a solar water pump instead of an electric pump. The pump was powered by the steam produced from a flat plate collector. Therefore, heat could be transferred downward from the collector to a hot water storage tank. The designed system consisted of four panels of flat plate solar collectors, an overhead tank installed at an upper level and a large water storage tank with a heat exchanger at a lower level. Discharge heads of 1, 1.5 and 2m were tested. The pump could operate at the collector temperature of about 70–90°C and vapor gage pressure of 7–14kPa. It was found that water circulation within the SWHS ranged between 12 and 59l/d depending on the incident solar intensity and system discharge head. The average daily pump efficiency was about 0.0014–0.0019%. Moreover, the SWHS could have a daily thermal efficiency of about 7–13%, whereas a conventional system had 30–60% efficiency. The present system was economically comparable to a conventional one. Keywords: Solar water heater system; Solar water pump; Steam power; Economy (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:33:y:2008:i:4:p:639-646 DOI: 10.1016/j.energy.2007.12.002 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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