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Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)


ISBN Онлайн: 978-1-56700-478-6

PERFORMANCE ASSESSMENT OF LOOP HEAT PIPE USING MODIFIED FIGURE OF MERIT WITH CORRECTION FACTOR

DOI: 10.1615/IHMTC-2017.3350
pages 2397-2402

A. R. Anand
Thermal Systems Group, ISRO Satellite Centre, Bangalore-560017, India

Akhil Jaiswal
Thermal Systems Group ISRO Satellite Centre Bangalore, INDIA

Amrit Ambirajan
Thermal Systems Group, U R Rao Satellite Centre, Bangalore, INDIA

Pradip Dutta
Dept. of Mechanical Engineering Indian Institute of Science Bangalore, INDIA

Аннотация

Figure of merit (FOM) of a two-phase heat transport device such as heat pipe or loop heat pipe (LHP) is a measure of its performance characteristics. In this paper, we propose a method of qualitatively assessing the performance of an LHP by balancing the saturation pressure difference across the LHP capillary wick with the pressure drops in vapour line and condenser. Validation of the proposed method with results of experiments on a mini LHP with working fluids such as acetone, methanol, n-pentane and ethanol shows that the proposed method predicts the operating characteristics of an LHP more accurately and is superior to the other FOM available in the literature for performance assessment.