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Thermo‐physical investigation of butyl stearate as potential phase change material for thermal energy storage in cooling application
Author(s) -
Chinnasamy Veerakumar,
Appukuttan Sreekumar
Publication year - 2020
Publication title -
energy storage
Language(s) - English
Resource type - Journals
ISSN - 2578-4862
DOI - 10.1002/est2.160
Subject(s) - differential scanning calorimetry , materials science , stearate , phase change material , thermal energy storage , thermogravimetric analysis , temperature cycling , heat exchanger , latent heat , fourier transform infrared spectroscopy , chemical engineering , thermal , composite material , thermodynamics , physics , engineering
Phase change material (PCM) based energy storage technology is a promising solution to conserve thermal energy. This work involves studies on thermophysical properties of butyl stearate as PCM for thermal comfort application and its corrosion compatibility with commonly used heat exchanger construction materials. The thermophysical properties of butyl stearate is studied using differential scanning calorimetry and the result shows that the peak melting and freezing temperatures are 18.64°C and 13.28°C, respectively. The latent heat of melting and freezing are 120.59 Jg −1 and 120.70 Jg −1 , respectively. The accelerated thermal cycling test reveals that butyl stearate is stable upto 1000 repeated thermal cycles. The thermogravimetric studies and Fourier transform infrared spectroscopy confirm that butyl stearate is thermally and chemically stable. The results of corrosion test provide information about selection of construction materials for heat exchanger and encapsulation in real‐time application. Butyl stearate is a potential PCM which can be used in thermal energy storage system for thermal comfort application.