Results 21 to 30 of about 87,592 (312)
Case Studies in Thermal Engineering, 2023 On the basis of the conjugate gradient method, an inversion model of the transient convective heat transfer coefficient between the bore surface and the gunpowder gas is presented. In this study, the measured temperature at a certain depth from the bore surface is employed as input.
Shiyu Chen +4 more
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Characteristic of boiling heat transfer coefficient for porous metal fins
Nihon Kikai Gakkai ronbunshu, 2018 Porous metal fin was used as boiling heat transfer plate of phase change devices. The number of cells of the porous metal fin is 8 ppi, and the pore diameter of the porous metal fin is 3.1 mm.
Yoshihiro KONDO, Hiroyuki KOSHITA
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Heat transfer direction dependence of heat transfer coefficients in annuli [PDF]
Heat and Mass Transfer, 2017 The National Research Foundation of South Africa (NRF), Eskom Tertiary Education Support Programme (TESP), University of Stellenbosch / University of Pretoria, South African National Energy Research Institute (SANERI) / South African National Energy Development Institute (SANEDI), Council for Scientific and Industrial Research (CSIR), Energy Efficiency
Prinsloo, F.P.A. (Francois) +2 more
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Journal of Hebei University of Science and Technology, 2019 In order to enhance the heat transfer performance of CO2 heat pump, the heat transfer performance of supercritical carbon dioxide in horizontal straight tube is conducted based on Fluent numerical simulation method. Cooling heat transfer of supercritical
Haiting CUI, Siwen LIU, Shaozheng WANG
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Performance analysis of shell and tube heat exchanger: Parametric study
Case Studies in Thermal Engineering, 2018 Enhancement of heat transfer through shell and tube exchangers stills taking high attention by researchers. The present work investigated the effect of shell diameter and tube length on heat transfer coefficient and pressure drop for shell side with both
Ammar Ali Abd +2 more
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Study of New Mini-Channel Trans-Critical CO2 Heat Pump Gas Cooler
Micromachines, 2022 A gas cooler is one of the important parts of a carbon dioxide (CO2) heat pump water heater, and it must meet the needs of not only pressurization but also heat transfer. It is important to study gas coolers. In this paper, a heat exchanger with a spiral
Jiawei Jiang +4 more
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Radiative Heat Transfer and Effective Transport Coefficients [PDF]
, 2011 The theory of heat transfer by electromagnetic radiation is based on the radiative transfer equation (RTE) for the radiation intensity, or equivalently on the Boltzmann transport equation (BTE) for the photon distribution. We focus in this review article, after a brief overview on different solution methods, on a recently introduced approach based on ...
Rudolf Gati +2 more
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Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes
Zhileng xuebao, 2020 In this study the boiling heat transfer characteristics of R290 in a 1, 2, and 4 mm horizontal micro-tube were investigated experimentally. The effects of mass flow rate [50-600 kg/(m2?s)], quality (0-1), and heat flux (5-20 kW/m2) on the boiling heat ...
Wang Haoyu +3 more
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CALCULATION OF HEAT TRANSFER COEFFICIENTS FOR FOODS [PDF]
International Communications in Heat and Mass Transfer, 2002 ABSTRACT The design of food refrigeration equipment requires estimation of the cooling and freezingtimes of foods and beverages, as well as the corresponding refrigeration loads. The accuracyof these estimates, in turn, depends upon accurate estimates of the surface heat transfercoefficient for the cooling or freezing operation.
Brian A. Fricke, Bryan R. Becker
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Heat Transfer Characteristics of Condensers in Rotating Heat Pipe Grinding Wheel under Impinging Jet
Zhileng xuebao, 2023 An axial rotary heat pipe grinding wheel is a new type of grinding wheel used to strengthen the heat transfer in the grinding arc area. Its heat transfer performance directly affects the heat transfer performance of the entire heat pipe grinding wheel ...
Zhang Liyong +3 more
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