The average convective heat transfer coefficients of the tube bundles in most previous investigations were based on the difference between the bulk fluid temperature and the average surface temperature of the t
The structure’s internal heat exchanger should be as simple as possible to make the cleaning easy and allow installation of a stirring apparatus. From Eq. (12.103), heat transfer rate can be enhanced by increasing total heat transfer coefficient, heat exchange area, and Δtm. View chapter ...
The research on thecoefficient of convective heat transferand the heat of emission of two kinds of fluids as heating medium . 并通过试验台分别对两种流体热媒的采暖系统表面对流换热系数及散热量进行实测研究。 更多例句>> 6) convective heat transfer coefficient ...
Journal of Heat TransferXin, R C, Ebadian, M A. The Effects of Prandtl Numbers on Local and Average Convective Heat Transfer Characteristics in Helical Pipes. ASME Journal Heat Transfer, 1997, 119: 467–473R.C. Xin, M.A. Ebadian, The effects of Prandtl numbers on local and average ...
where kair is the thermal conductivity of the air, andh¯conv is the convective heat transfer coefficient in the surface of the component, which is defined as (4)h¯conv=qconv"Tsurf-Tref where qconv", the convective heat flux in the surface of the component, can be expressed as the...
(Bajagay, 2011). When ambient temperature is more than the normal body temperature,blood circulationto the skin and peripheral tissue increases with vasodilatation of peripheral blood vessels to transfer more heat from core to the skin surface and to hasten evaporative and convective heat loss from...
A single general closed-form analytical solution for the average heat transfer coefficient for either an isothermal or isoflux boundary condition and for either laminar or turbulent flow is presented. For a smooth surface experiencing a uniform heat flux, the average surface temperature is also of ...
In order to investigate the effects of centrifugal force and buoyancy on the local and average convective heat transfer characteristics of single phase, experiments were carried out on uniformly heated helical pipes. The local wall temperature is measured along the length of coil as well as in the...