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Integrated collector storage solar water heater under partial vacuum

Σουλιώτης Μανόλης, Papaefthimiou Spiros, Καούρης Γιάννης Γ., Ζαχαρόπουλος Άγγελος, Quinlan Patrick, Smyth Mervyn

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URIhttp://purl.tuc.gr/dl/dias/BE5CEF8C-17D0-4F48-9527-4A0F1A26EC64-
Identifierhttps://www.sciencedirect.com/science/article/pii/S0360544217314500?via%3Dihub-
Identifierhttps://doi.org/10.1016/j.energy.2017.08.074-
Languageen-
Extent10 pagesen
TitleIntegrated collector storage solar water heater under partial vacuumen
CreatorΣουλιώτης Μανόληςel
CreatorSouliotis Manolisen
CreatorPapaefthimiou Spirosen
CreatorΠαπαευθυμιου Σπυριδωνel
CreatorΚαούρης Γιάννης Γ.el
CreatorCaouris Yiannis G.en
CreatorΖαχαρόπουλος Άγγελοςel
CreatorZacharopoulos Aggelosen
CreatorQuinlan Patricken
CreatorSmyth Mervynen
PublisherElsevieren
Content SummaryThe work focuses on the experimental study of the heat diode mechanism in an Integrated Collector Storage Solar Water Heater (ICSSWH) for domestic applications. The solar device combines a horizontal cylindrical vessel with an asymmetric reflector trough (Compound Parabolic Concentrator – CPC). The cylindrical storage tank comprises two concentric cylindrical vessels: the outer absorbing vessel and the inner storage vessel. The annulus between the cylindrical vessels is partially depressurized and contains a small amount of water serving as Phase Change Material (PCM), which changes phase (mainly at low temperatures) thus producing vapor and creating a thermal diode transfer mechanism from the outer to the inner surfaces of the vessels. Several experimental results, including uncertainty analysis, are demonstrated through diagrams depicting temperature variations, mean daily efficiency and thermal losses coefficient. Additionally results from the variation of the temperature and the total pressure inside annulus are also presented. The results clearly show that the vapor's pressure plays the most important role regarding the thermal performance of the device.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-03-16-
Date of Publication2017-
SubjectCPCen
SubjectCompound parabolic concentratorsen
SubjectHeat diode mechanismen
SubjectICSSWHen
SubjectIntegrated collector storage solar water heaters en
SubjectPCMen
SubjectPhase change materials en
SubjectThermal behavioren
Bibliographic CitationM. Souliotis, S. Papaefthimiou, Y. G. Caouris, A. Zacharopoulos, P. Quinlan and M. Smyth, "Integrated collector storage solar water heater under partial vacuum," Energy, vol. 139, pp. 991-1002, Nov. 2017. doi:10.1016/j.energy.2017.08.074en

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