설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)
- 제11권2호
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- Pages.176-184
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- 1999
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
삼각단면 극소히트파이프의 작동특성에 관한 기초 연구
Fundamental study on performance characteristics of a micro heat pipe with triangular cross section
초록
Numerical and experimental studies were performed to examine the characteristics of heat and mass transfer processes for a Micro Heat Pipe(MHP) with a triangular cross-section. Solutions on mass flow rate, pressure variation, and radius of meniscus were obtained using the mathematical model developed by Faghri and Khrustalev. To obtain an increase in capillary limitation, a triangular tube with curved walls was designed and fabricated. The measurement by microscope showed that the radius at corners of the tube was ranging between 0.03-0.05mm. Performance test for MHPs using the triangular tube with curved walls proved a substantial increasement in heat transport limitation, with 4.5W and 2.0W in case of using water and ethanol as a working fluid, respectively. In the previous study by Faghri a limitation of 0.5W was reported for a water MHP with a regular triangular tube.
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