heat-transfer coefficient

heat-transfer coefficient

[′hēt ¦tranz·fər ‚kō·i′fish·ənt]
(thermodynamics)
The amount of heat which passes through a unit area of a medium or system in a unit time when the temperature difference between the boundaries of the system is 1 degree.
References in periodicals archive ?
A new method of determining the convective heat-transfer coefficient.
Until now, the cooling channels were assumed to have a uniform heat-transfer coefficient throughout the mold.
Low NTU values were caused by the small heat transfer area of the tested heat exchangers, despite the high overall heat-transfer coefficient values.
In addition, because the NTU is inversely proportional to the Re, it follows that a small improvement in the overall heat-transfer coefficient would be accompanied by a decrease of the NTU and the efficiency.
Nenad Miljkovic, a doctoral student at the university, and colleagues in the device research laboratory, have designed a surface coating that has an increased heat-transfer coefficient.
In a similar manner, the effect of heat transfer is the heat-transfer coefficient, which is defined as the quantity of heat passing through a unit area of material, of a unit thickness, in a specific unit of time, when one side differs by 10 Kelvin.
Purdue University researchers have shown that the technology increased the heat-transfer coefficient, which describes the cooling rate, by as much as 250 percent.
The software can be used to compute flow rate, pressure drop, and heat-transfer coefficient in fluid transport devices.
This gives you the overall heat-transfer coefficient, which is the heat transfer between the polymer and the cooling medium.
Users plug in the profile shape and material, and the computer simulates the cooling time needed by calculating the convection heat-transfer coefficient from the profile into the coolant, while taking into account how profile mechanical properties are impacted by specific cooling times.
Then there is a heat-transfer coefficient for the "gap" between the polymer and the roll surface.