Constructal enhancement of cooling performance of local heating elements with different heat generation rates under free and mixed convection regimes
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Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study aims to obtain the optimum heat generation rate of local heating elements with different heat generation rates in a vertical duct. Covering free and mixed convection regimes, experimental and numerical studies are conducted. Various values of the modified Grashof and Reynolds numbers are taken into account. The influence of the heat generation rates of local heating elements on temperature of the hot spot, local temperatures, system's global conductance and Nusselt number are presented. It is shown that the heating elements with coheat generation rates cause a rise in the temperature of the hot spot and reduce the global conductance, and the gradual decrease in the heat generation rates of heating elements improves the system's cooling performance.
Açıklama
Anahtar Kelimeler
Constructal law, Heat generation ratio, Dimensionless global conductance, Hot spot temperature, Average Nusselt number, Free convection, Mixed convection
Kaynak
International Communications in Heat and Mass Transfer
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
135
