ISBN: 9783639130669 - condensation of r-22 in horizontal smooth tubes: flow pattern-based heat transfer and pressure drop correlations (10 resultados)

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Taschenbuch. Condición: Neu. Condensation of R-22 in Horizontal Smooth Tubes | Flow Pattern-Based Heat Transfer and Pressure Drop Correlations | Marcel Christians | Taschenbuch | Einband - flex.(Paperback) | Englisch | 2009 | VDM Verlag Dr. Müller | EAN 9783639130669 | Verantwortliche Person für die EU: OmniScriptum GmbH & Co. KG, Bahnhofstr. 28, 66111 Saarbrücken, info[at]akademikerverlag[dot]de | Anbieter: preigu.…

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Kartoniert / Broschiert. Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Christians MarcelMarcel Christians received his B.Eng., B.Eng.(Hons) and M.Eng.ndegrees in Mechanical Engineering (cum laude) at the Universitynof Pretoria in Pretoria, South Africa. He is currently employednat the Laboratory of Heat.…

Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The phase-out of ozone-depleting refrigerants, suchas R-12 and R-22,according to the Montreal Protocol of 1987, hasprovided the incentiveto increase the thermal efficiency of current heating andrefrigeration systems. The purpose of this study wasto increase theaccuracy of the predictions of both theheat transfer and pressure drop correlations forcondensing refrigerants in the Intermittent flowregime. This was doneutilizing a novel method involving the temporal andspectral analysisof the light intensity of the local flow regime, asseen through asight glass. An experimental setup was designed,built and commissionedspecifically for this purpose using refrigerant R-22and a smoothtube. It was found that the accuracy of themean heat transfer coefficient predictions increasedsubstantiallycompared to other leadingcorrelations, particularly at low mass fluxes. Interms of the pressure drop, the predictions alsoincreased inaccuracy, and it was found that the time fractionmethod allows for continuouspredictions over flow regime transitions when usinglocal flow pattern-based pressure drop models.…