AN EXPERIMENTAL STUDY ON TWO-PHASE PRESSURE DROP AND HEAT TRANSFER CHARACTERISTICS OF FC-72 IN MICRO-CHANNELS
The advance in electronic technology enables a large number of circuitry to be packed in small volume. Since the use of a finned heat sink to these electronic components is limited by manufacturing constraints and noise level, the use of liquid cooling is a promising way of maintaining low surface temperature by dissipating the large heat flux. In this study, the heat transfer and pressure drop characteristics of a micro-channel heat exchanger, which was designed for liquid cooling of electronic components, were investigated by varying operating conditions and test geometries. FC-72 was used as a working fluid. The micro-channel heat exchanger was made with rectangular shape having hydraulic diameters of 61.1 and 278.0μm in regular intervals with a channel length of 250 mm. A direct heating method by a DC power supply was adapted to supply heat load to the test section. The heat flux provided by the direct heating method ranged from 0.6 to 45.1 kW/m2. The two-phase heat transfer rate from the heat source to the working fluid was measured, and two-phase pressure drop characteristics of the test section were also investigated.
YONGHEE JANG BOSUNG KIM YONGCHAN KIM HO YOUNG KIM
Graduate School of Mechanical Engineering, Korea University Anam-Dong, Seongbuk-Ku, Seoul, 136-713, Department of Mechanical Engineering, Korea University Anam-Dong, Seongbuk-Ku, Seoul, 136-713, Korea
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）