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heat pump system rise or fall continuously. Thus, it affects the heat exchanger performance of underground pipe and reduces the operating efficiency of system. Therefore, it is believed... to ignore the obtained and lost heat in the process of transportation through the pipe heat preservation for an air conditioning system. The heat released by pumps is negligible compared......
of the pipeline system [2]. As the fluid flows in pipe, heat is constantly transferred to the surroundings and temperatures of the fluid and enthalpy value are changed. The temperature drop calculation... of inner wall; 4) Acceleration-induced energy loss is neglected. When gas-liquid fluids flow through the pipe and the surrounding temperature is colder than the fluids, heat will be lost from the fluids......
and the intrinsically greater nanofluids’ thermal conductivity. Key words: heat pipe; nanofluid; thermal resistance; thermal performance Cite this article as: Mohammad Alhuyi NAZARI, Mohammad H. AHMADI...–56]. Structure of the heat pipe controls the mechanism of liquid returning from the condenser to the evaporator. Conventional heat pipes employ capillary force, to deliver the liquid from......
and the outside wall of the pipe; 2) Conductive heat transfer through the pipe wall; 3) Convective heat transfer between the fluid inside the pipe and the inside wall of the pipe. A schematic diagram... segment and seawater The heat flux due can be written using the following equation: (1) where dout is the diameter of the outer pipe; tsea......
; 文献标志码:A 文章编号:1672-7207(2014)10-3645-06 Numerical simulation and experimental study on heat pipe... Technologies (Zhuzhou) Co., Ltd, Zhuzhou 412000, China) Abstract: A kind of stepped non-uniform heat pipe structure was designed to meet the high speed EMU traction converter (CI) cooling requirement. Based......
Heat transfer performance of flat plate pulsating heat pipe with double sides rectangular or triangular channel XIAHOU Guo-wei1, YANG Cai-yun1, CHEN Lan-lan2 (1. College of Energy and Dynamic... pipe (PHP) with double sides triangular and rectangular channel were studied. The results show that these two kinds of the PHP can work stably and have good thermal performance. However, the heat......
; 文章编号:1672-7207(2012)05-1975-09 Numerical simulation and structural parameters optimization in shell side of radial heat pipe heat exchanger TU Fu-bing1, WU Hui-fen1, ZHANG Ling2, ZHOU Jie-min1...) Abstract: By simulating the shell side of radial heat pipe heat exchanger with the software FLUENT, the characteristics of smoke velocity, temperature and local convection heat transfer coefficient......
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. XIAO et al [16] designed a new cooling system applied onto the thermal management of high-power LEDs on the basis of U-shaped heat pipe with fan. Both experiment and finite element analysis (FEA) are applied to investigating the thermal performance of the proposed cooling device. It is found that the U-shaped heat pipe cooling device holds very good cooling capacity. ZHAO et al [17] investigated......
