Efficiency of extended surfaces with simultaneous heat and mass transfer

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TypeArticle
Journal titleASHRAE Transactions
ISSN0001-2505
Volume1A
Pages135143; # of pages: 9
Subjectradiant heat distribution equipment; heat transfer; mass; mathematical models; computer applications; Moisture performance; equipement diffuseur de chaleur radiante; transfert de chaleur; masse; modele mathematique; application de l' ordinateur
AbstractAn algorithm is presented to determine the efficiency of extended surfaces (circular or longitudinal fins with a uniform thickness) when simultaneous heat and mass transfer occur. The temperature distribution over the fin surface is calculated by solving numerically a nonlinear, second-order differential equation. The overall fin efficiency of a wet surface is evaluated using the temperature and specific humidity differences as the driving forces for heat and mass transfer, respectively. The concept of efficiency of a wet surface fin is similar to the basic definition of a dry surface fin. The presented algorithm is unique and accurate in determining the condition of the fin surface with regard to being dry or wet. This model could also be used to optimize the cooling and dehumidifying coil design for specific operating conditions.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1196
NRC number23376
3487
NPARC number20375700
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Record identifier78025fdd-e4bc-4d84-9a2b-eed72f88ab3c
Record created2012-07-23
Record modified2016-05-09
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