Abstract
This experimental test investigates the effect of filling ratio (FR) and inclination angle on the thermal performance of a nanoengineered copper-water heat pipe. A hydrophilic copper oxide coating (CuO) is synthesized and integrated on the inner wall of the evaporation section of the heat pipe. The heat pipe is fabricated from an inner grooved copper pipe with dimensions of 12.7 mm outer diameter, 11 mm inner diameter, and 440 mm length. Ultra-filtered de-ionized (DI) water is used as a working fluid. Four different FRs of DI water 3%, 5%, 10%, and 15% are investigated to determine the optimum configuration. All samples are tested at various inclination angles and working loads. Experimental results show that the optimum filling ratio is the 5% FR, which was indicated by the owest thermal resistance of 0.019 K/W.
| Original language | English |
|---|---|
| Article number | 4050225 |
| Journal | Journal of Thermal Science and Engineering Applications |
| Volume | 13 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 2021 |
| Externally published | Yes |
Funding
The authors would like to thank the Higher Committee for Education Development in Iraq (HCED) for providing the scholarship. This work is supported by the National Science Foundation (NSF) program of thermal transport processes under Grant No. 1336443 (Program Manager Dr. Jose Lage).
Keywords
- condensation
- copper oxide CuO
- evaporation
- filling ratio
- grooved copper heat pipe
- heat pipes
- nanoengineered coating