Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/9625
Title: The influence of binary mixture thermophysical properties in the analysis of heat and mass transfer processes in solar distillation systems
Authors: Τσιλιγγίρης, Παναγιώτης Θ.
Item type: Journal article
Keywords: Solar distillation;Heat and mass transfer analysis;Binary mixture properties;Thermophysical properties of saturated air;Ηλιακή απόσταξη;Δυαδικές ιδιότητες μείγματος;Θερμοφυσικές ιδιότητες του κορεσμένου αέρα;Ανάλυση μετάδοσης θερμότητας και μάζας
Subjects: Science
Physics
Επιστήμες
Φυσική
Issue Date: 4-May-2015
Dec-2007
Date of availability: 4-May-2015
Publisher: Elsevier
Abstract: Although a substantial amount of research work has already been devoted to various aspects of modeling the convective and mass transport processes in solar distillation systems, it appears that the role of thermophysical and transport properties of the working medium and their effect on the thermal behavior and performance analysis of such systems has been left almost completely unnoticed. The working medium in these systems, which is a binary mixture of water vapor and dry air in equilibrium, appears to exhibit a completely different set of properties than dry air, especially at saturation conditions and at the higher region of the solar still operational temperature range. An analysis is presented aiming to signify the effect of binary mixture thermophysical properties on the transport processes and the associated quantities and evaluate the thermophysical properties of the working medium in these systems, based on contemporary data for dry air and water vapor. The derived results, in the form of convenient algebraic correlations, are employed to investigate the effect of using the appropriate thermophysical properties on the calculation of the convective heat and mass transfer, as well as the distillate mass flow rates. According to the results from the present investigation, although the use of improper dry air data leads to a significant overestimation of the convective heat transfer coefficient, the errors associated with the use of improper dry air properties is a moderate overestimation of distillate output which is estimated to be up to 10% for maximum average still temperatures of 100 °C.
Language: English
Citation: TSILINGIRIS, P.T. (2007). The influence of binary mixture thermophysical properties in the analysis of heat and mass transfer processes in solar distillation systems. Solar Energy. [Online] 81 (12). p.1482–1491. Available from: http://www.sciencedirect.com/[Accessed 15/03/2007]
Journal: Solar Energy
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/9625
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