Effect of Localized Heating on Three-Dimensional Flat-Plate Oscillating Heat Pipe
Abstract
An experimental investigation was conducted, both thermally and visually, on a three-dimensional flat-plate oscillating heat pipe (3D FP-OHP) to characterize its performance under localized heat fluxes while operating in the bottom heating mode and charged with acetone at a filling ratio of 0.73. The cooling area was held constant and three heating areas of 20.16 [Formula: see text], 11.29 [Formula: see text], and 1.00 [Formula: see text] were investigated, respectively. It was found that as the heating area was reduced and higher heat fluxes were imposed, the thermal resistance increased and the amplitude of thermal oscillations in the evaporator increased and became more chaotic. Using neutron radiography, it was observed that fluid oscillations did not occur in outer channels located away from the region of local heating. Although the thermal resistance increased during localized heating, a maximum heat flux of 180 W/[Formula: see text] was achieved with the average evaporator temperature not exceeding [Formula: see text].
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 01, 2010
- Source ID
- 10.1155/2010/465153
Entities
People
- H. B. Ma
- S. M. Thompson
Organizations
- Office of Naval Research
- University of Missouri