film coefficient

film coefficient

[′film ‚kō·i‚fish·ənt]
(thermodynamics)
For a fluid confined in a vessel, the rate of flow of heat out of the fluid, per unit area of vessel wall divided by the difference between the temperature in the interior of the fluid and the temperature at the surface of the wall. Also known as convection coefficient.
References in periodicals archive ?
The exterior convective film coefficient is measured using a scanning grid of a spacing of 0.
Process fluid is continuously pushed from the center of each tube to the wall and back to the center, eliminating thermal gradients and boosting the inside film coefficient.
The different isothermal values of the temperature-dependent surface film coefficient [h.
Polymers that have a Tg (glass-transition temperature) within the cooling range will have a significant change in the film coefficient.
Where h = film coefficient of the prevailing condition, in this case 1.
A modification of Sieder and Tate's correlation (17) is proposed to estimate the film coefficient ([h.
2008) developed a simplified model to compute the film coefficient of a double glazed window cavity with between-pane metallic blinds.
f] = effective surface film resistance, equal to R/3Kr, s Kr = mass transfer coefficient, also called film coefficient, m/s
Unfortunately, the software used to determine total product U-factors via computer simulation (LBNL 2003) does not provide explicit values for the total room-side film coefficient, so the values had be backed out of the results.
During the CTS calibration procedure, the air velocity of the weather-side wind is measured, and this velocity must be controlled in such a way as to produce a mean weather-side film coefficient of 30 W*[m.
This model considers convection and radiation over the internal and internal surfaces using film coefficients [h.
In addition, the exchanger's design enhances circulation and provides excellent convective film coefficients, even under low flow conditions.