Convective heat transfer with a periodic longitudinal heat flux variation
Abstract
The effects of longitudinally periodic heat flux profile on forced convection heat transfer are considered in a single phase liquid, subcooled boiling, and low-quality two-phase flow boiling conditions. Tests were made at low pressure in a Joule-heated container with an exterior wall of thickness varied in a stepwise fashion; the variation in thickness was sufficient to modify the resistance generated wall heat flux when direct current passed through the tube walls. The overall average forced convection boiling heat transfer coefficient was about half of the predicted value for flow boiling water under constant heat flux boundary conditions.
- Publication:
-
27th Heat Transfer and Fluid Mechanics Institute
- Pub Date:
- 1980
- Bibcode:
- 1980htfm.proc...21C
- Keywords:
-
- Boiling;
- Convective Heat Transfer;
- Forced Convection;
- Water Heating;
- Heat Transfer Coefficients;
- Nucleate Boiling;
- Two Phase Flow;
- Wall Flow;
- Wall Temperature;
- Fluid Mechanics and Heat Transfer