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Accuracy Improvement for Measurement of Heat of Fusion by T-history Method  

박창현 ((주)EnE시스템)
백종현 (한국생산기술연구원)
강채동 (전북대학교 기계공학과)
홍희기 (경희대학교 기계산업시스템공학부)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.8, 2003 , pp. 652-660 More about this Journal
Abstract
T-history method, measuring heat-of-fusion of phase change material (PCM) in sealed tubes, has the advantages of a simple experimental device and no requirements in sampling process. However, a degree of supercooling used in selecting the range of latent heat release and neglecting sensible heat during the phase change process can cause significant errors in determining the heat of fusion in the original method, which has been improved in order to predict better results by us. In the present study, the modified method was applied to a variety of PCM such as paraffin and lauric acid having very small or no supercooling with a satisfactory precision. Also the selection of inflection point and temperature measurement position was fumed out not to affect the accuracy of heat-of-fusion significantly. As a result, the method can provide an appropriate means to assess a new developed PCM by cycle test even if a very accurate value cannot be obtained.
Keywords
Phase change material; Heat of fusion; Latent heat; T-history method; Thermal storage;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 A simple method, the T-history method, of determining the heat of fusion, specific heat and thermal conductivity of phase-change materials /
[ Zhang,Y.;Jiang,Y. ] / Measurement and Science Technology
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[ Park,C.H.;Choi,J.H.;Hong,H. ] / Korean J. Air-Conditioning and Refrigeration Eng.   과학기술학회마을
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