Influence of humidity on the convective heat transfer from small cylinders
Abstract
The convective heat transfer from a cylinder to a humid air stream flowing normal to the cylinder was investigated experimentally at atmospheric pressure over a range of variables which is relevant to the use of hot-wire anemometry: air temperatures between 30°C and 70°C and velocities between 12 and 37 m/s. For molar fractions of water vapour up to 0.27, the heat transfer increased with increasing humidity. The ratio of heat transfer rates in humid air and dry air is a unique function of the molar fraction of water vapour, independent of the air temperature and flow velocity.
- Publication:
-
Experiments in Fluids
- Pub Date:
- 1998
- Bibcode:
- 1998ExFl...24..141S