The utility model can be used for testing convection heat transfer processes of the surface of material and computing and determining convection heat transfer coefficient under different air velocities and different air medium temperature. The utility model comprises a host, the top of the host is ...
he measured convective heat transfer coefficient was between 6.2 and 7.6 W/m2C, with an average of 7.0 W/m2C. 展开 关键词: convective heat transfer coefficient natural convection Roman baths DOI: 10.1139/tcsme-2012-0029 被引量: 7 年份: 2012 ...
Energy is transferred from the plate at Tp to the cover through the radiation heat transfer coefficient hr1, and to the fluid in the upper duct flowing between the glass cover and the plate at a temperature Tf1 through the convection heat transfer coefficient h1, and to the fluid in the ...
As is well known, the heat transfer coefficient of a solar air heater duct can be increased by providing artificial roughness on the heated wall (i.e. the absorber plate). Experiments were performed to collect heat transfer and friction data for forced convection flow of air in solar air hea...
an automated method for velocity field analysis; panel discussion on data analysis trends in x-ray and gamma-ray astronomy; the Groningen image processing ... VD Gesù,L Scarsi,P Crane,... - World Scientific, 被引量: 159发表: 1989年 Comparison of methods to evaluate changes in relative bo...
The steady state governing equations inside the physical model of the GAHE (Figure 2) are the mass, momentum, and energy equations for natural convection described as follows: ∂(𝜌𝑢)∂𝑥+∂(𝜌𝑣)∂𝑦=0∂(ρu)∂x+∂(ρv)∂y=0 (1) ∂(𝜌𝑢 𝑢)∂𝑥...
The convection heat transfer coefficient owing to the wind (hw) is calculated by [19]: ℎ𝑤=5.7+3.8 𝑉𝑤.hw=5.7+3.8 Vw. (7) Back-loss coefficient (Ub) is determined by using thermal conductivity (λi) and thickness (ti) of insulation as [19]: 𝑈𝑏=𝜆𝑖𝑡𝑖.Ub=...
The distribution of the heat transfer coefficient along the wall depends on the air flow pattern in the room. Krajčík et al. [86] visualized the non-uniformity of the distribution of hi,t along heating or cooling wall surface in a room at natural convection with no or uniformly distribute...
the indoor air temperature model of greenhouse will be re-modeling by using the regression analysis method in this paper.Analysis each convection heat transfer coefficient of the model and re-established them.In the case of known the outdoor weather conditions,the solution of the indoor temperature...
Two different air supply systems for PEM fuel cells, namely "forced air" and "forced convection" systems, and two different bipolar plate materials, namely "aluminum" and "graphic composite", were investigated in the heat transfer analysis. In addition, an air cooling fin was designed and ...