百度试题 题目翻译短语:convection heat-transfer coefficient A.工作性能系数B.能效比C.对流换热系数D.导热系数相关知识点: 试题来源: 解析 C 反馈 收藏
Building glassesSalt deposition characteristicCHTCHeat transmission coefficientGlass buildings in coastal regions and islands exposed to the hydrothermal marine environment, in addition to salt deposition and erosion, lead to a change in the surface convective heat transfer coefficient (CHTC) and gradual ...
Our measurements proved that the convective heat transfer coefficient (h) has a larger value hwet at the constant drying rate period and after that it falls down to a minimum one: hdry in the equilibrium dried state (see Fig.1). Our measurements showed also that the heat of vaporisation ...
求翻译:convection heat transfer coefficient是什么意思?待解决 悬赏分:1 - 离问题结束还有 convection heat transfer coefficient问题补充:匿名 2013-05-23 12:21:38 对流换热系数 匿名 2013-05-23 12:23:18 对流传热系数 匿名 2013-05-23 12:24:58 对流传热系数 匿名 2013-05-23 12:26:38 ...
7、 Nusselt number, viewed as the dimensionless convection heat transfer coefficient is defined as:Nu=hLckWhere k is the thermal conductivity of the fluid and Lc is the characteristic length. The physical significance means the heat transfer ratio of convection to conduction. For Nu=1, the heat...
Newton's law of cooling states that the heat transfer rate leaving a surface at temperature Ts into a surrounding fluid at temperature Tf is given by the equation:Qconvection = h A (Ts - Tf)where the heat transfer coefficient h has the units of W/m 2 . K or Btu/s.in 2 .F. The...
Nusselt number and convection heat transfer coefficient for a coaxial heat exchanger using Al2O3-water pH = 5 nanofluid. Bull Inst Polit Ias¸i, t LV (LIX), f 2009;2:71-80.Luciu RS, Mateecsu T, Cotorobai V, Mare T. Nusselt Number and Convection Heat Transfer Coefficient for a ...
Although, convection is complex,the rate of convection heat transfer is observed to be proportional to the temperature difference and can be conveniently expressed byNewton’s law of coolingas (W/m2)(x.1) or (W)(x.2) Where h= convection heat transfer coefficient,W/m2·oC ...
We use "h" for "Convection heat transfer coefficient" in heat transfer, "h" for enthalpy in thermodynamics. please don't confuse those things because that are just a alphabet to mention some quantity. In matlab pdetool uses "h" alphabet like h*u=r for...
or vice versa. Theconvection heat transfer coefficientcan be conveniently expressed in its normalized form in terms of theNusselt number. On account of the fact that, in the absence of flow motion, the heat transfer through a fluid is via conduction, it is, therefore, logical to normalize the...