A comparative experimental study of heat transfer characteristics of steam and air flow in rectangular channels roughened with parallel ribs was conducted by using an infrared camera. Effects of Reynolds numbers and rib angles on the steam and air convective heat transfer have been obtained and ...
1.The main parameterof heat convection process is heat transfer coefficient.反映对流换热过程特性的主要参数是对流换热系数。 2.CFD Simulation of Convective Heat-Transfer Coefficient of External Surfaces of Buildings建筑外表面对流换热系数的CFD模拟 3.Based on a lot of experimental data, the empirical corr...
q = heat transferred per unit time (W, Btu/hr) A = heat transfer area of the surface (m2, ft2) hc= convective heat transfer coefficient of the process (W/(m2oC, Btu/(ft2hoF)) dT = temperature difference between the surface and the bulk fluid (oC, F) ...
数据从服务器在FilteringTable被装载,并且在它之下一空你是修造。 [translate] aExperimental study on the convective heat transfer enhancement in single-phase steam flow by a support grid 关于对流换热改进的实验性研究在单阶段蒸汽流程由支持栅格 [translate] ...
aThe convective boiling and -resistances depend on which part of the steam generator is analysed. In the re-heater and super-heater, the heat-transfer mechanism is purely convective; in which case the Gnielinski [6] equation is used to calculate the Nusselt number. 对流煮沸和-抵抗取决于分析蒸...
A 22 foot uninsulated steam line crosses a room. The outer diameter of the steam line is 18 in. and the outer surface temperature is 280oF. The convective heat transfer coefficient for the air is 18 Btu/hr-ft 2 - oF.Calculate the heat transfer rate from the pipe into the room if ...
Convective effects and, consequently, the heat transfer coefficient are enhanced by increasing the two-phase velocity as results of augmenting the vapor specific volume, due to the saturation temperature decreasing. From: Microchannel Phase Change Transport Phenomena, 2016 ...
Heat transfer coefficient and pressure drop were measured during condensation of steamin a vertical copper tube with and without Twined Wire Coil Inserts (TWCI), respectively. 1前言大空隙率多孔体管内插物-绕花丝内插物,被认为是强化管内凝结换热的最有效途径之一[1]。 3. An experimental study is...
D.S. Cryder, A.C. Finalbargo, Heat transmission from metal surface to boiling liquids: effect of temperature of the liquid on film coefficient. Trans. AIChE33, 346 (1937) Google Scholar R.I. Vachon, G.H. Nix, G.E. Tanger, Evaluation of constants for the Rohsenow pool—boiling corre...
field. At last, two empirical correlations are proposed to summarize the friction factor and convective heat transfer coefficient for air flowing through helical-tube bundles. Introduction Cooled Cooling Air, known as CCA technology [1], refers to the heat exchanger installation on the aero engines...