of the heat transfer coefficient of water jets impinging perpendicularly on a hot surface.In the experiments, a method involving a transient heat flow through the specimen is applied, and the heat transfer coefficient is evaluated from the respons of a thermocouple beneath the surface of specimen....
Copper, aluminium, and nickel billets were heated and then subjected to cooling by water spray systems and immersion in water and mixtures of water and organic agents. The temperature close to the surface was measured and used for the calculation of the heat transfer coefficient by the implicit ...
It is a process value of the heat transfer in between a fluid and a body. For example from cooling water to the steel of a heat exchanger. The heat transfer coefficient depends only on the fluid, its movement and the surface of the solid body. However, not from the material of the so...
Besides, the convectionheat transfer coefficientinside water - wall tube was determined. 从而确定管内的对流换热系数. 互联网 The main parameter of heat convection process isheat transfer coefficient. 反映对流换热过程特性的主要参数是对流换热系数. ...
a little,which was still higher than the superficial heat transfer coefficient while considering the heat conduction of stationary nanolayer of air.It was supposed that eddy flow was generated in the micro-nano bubbles by the slip flow of water on the tube wall,which enhanced the heat transfer....
The corresponding dimensional mass transfer coefficient between the ASL and the lumen is thus\(k_i = \text {Sh}_i {\mathscr {D}}/R_i\). If Sh\(_{i}\)is assumed independent of the axial coordinate (the validity of this assumption is discussed in Haut et al.28), Eqs. (4and6) ...
化工原理PrinciplesofChemicalIndustry Heattransfertofluidswithoutphasechange Regimesofheattransferinfluids Afluidbeingheatedorcooledmaybeflowingindifferentflowpatterns.Also,thefluidmaybeflowinginforcedornaturalconvection.Atordinaryvelocitiestheheatgeneratedfromfluidfrictionisnegligibleincomparisonwiththeheattransferredbetweenthe...
Determination of Heat Transfer Coefficient for Air-Atomized Water Spray Cooling and Its Application in Modeling of Thermomechanical Controlled Processing o... The paper presents the method and results of determination of heat transfer coefficient for air-atomized water spray cooling with consideration of...
Uo is the overall heat transfer coefficient between the water surface and the environment given as:[9]Uo=hw·Tg−Ta/Tg−Ts+hrgsand the surface area Ar is the ratio of cover area Ag to the free horizontal surface area of the salt water in the basin Aw:[10]Ar=Ag/Aw. ...
(2)) is applied to determine the heat transfer coefficient (Farinu and Baik, 2007, 2008; Sandhu et al., 2016). (2)hA(To−Ts)=Q1+Q2 where Q1 is the energy consumed for water evaporation and Q2 is the energy used to heat up the product, so Eq. (2) can be rewritten as Eq. ...