In design, operative temperature can be defined as the average of the ambient air temperatures, weighted by their respective heat transfer coefficients.
32.
Dropwise condensation is one of the most effective mechanism of heat transfer and extremely large heat transfer coefficients can be achieved with this mechanism.
33.
The overall heat transfer coefficients will adjust to take into account that a different perimeter was used as the product UP will remain the same.
34.
The heat transfer coefficient is much lower for gases than for liquids, thus the enormous surface area in a regenerator greatly increases heat transfer.
35.
They have a high heat transfer coefficient as well as a high circulation flow, which both work to increase the efficiency of the evaporator.
36.
The heat transfer coefficient "'h "'depends upon physical properties of the fluid and the physical situation in which convection occurs.
37.
Due to this new layer, there is additional resistance within the heat exchanger and thus the overall heat transfer coefficient of the exchanger is reduced.
38.
For instance, this may be because it is air-cooled, giving it a lower heat transfer coefficient than if it were liquid-cooled.
39.
If all heating surfaces are to be equal, temperature drop across each effect will be approximately inversely proportional to the heat transfer coefficient in that effect.
40.
Heat transfer coefficients is large so designers to achieve a specified heat transfer rate with a smaller surface area and thus a smaller and less expensive condenser.
