کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
787657 1466486 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study of accurate latent heat measurement for a PCM with a low melting temperature using T-history method
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A study of accurate latent heat measurement for a PCM with a low melting temperature using T-history method
چکیده انگلیسی

When the latent heat of a phase change material (PCM) with a lower melting point than ambient temperature was assessed according to the standard T-history method using a vertically oriented test tube, a temperature gradient occurred in the longitudinal direction of the tube due to natural convection. This led to a decrease in the accuracy of the latent heat of fusion measurement. In this study, the accuracy of the measurement with the original T-history method was improved without decreasing the test's simplicity and convenience by setting the test tube horizontally. The heat transfer to the vapor-layer of the tube under volume change during melting was assumed to be negligible and the results were calculated using the two inflection points of temperature as the start and end of latent heat period. Under these assumptions, the results agree closely with other reference data. And, the new method proposed in this study showed a remarkable reduction in data scattering.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 29, Issue 7, November 2006, Pages 1225–1232
نویسندگان
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