10.1007/s40095-021-00431-y

Performance analysis of melting behavior of phase change material encapsulated within differently shaped macro-capsule

  1. Scholar, Mechanical Engineering Department, National Institute of Technology, Raipur, Chhattisgarh, IN
  2. Mechanical Engineering Department, National Institute of Technology, Raipur, Chhattisgarh, IN

Published in Issue 2021-09-24

How to Cite

Sharma, A., & Dewangan, S. K. (2021). Performance analysis of melting behavior of phase change material encapsulated within differently shaped macro-capsule. International Journal of Energy and Environmental Engineering, 13(1 (March 2022). https://doi.org/10.1007/s40095-021-00431-y

Abstract

Abstract While human race is facing continuous depreciation of natural resource (fuel), storing different forms of energy are one of the major areas of interest for today’s researchers, storing excess thermal energy with the help of phase change material (PCM) is quite major breakthrough in this field. PCMs are being extensively used in building applications (as one of the many applications of PCM) to passively maintain room temperature as per human comfort and also in heat exchangers. Although PCM performance analysis being a broad area of research, present paper is focused in presenting the comparative study the effect of differently shaped macro-capsule in the melting characteristic of phase change material with the help of ANSYS Fluent CFD simulations. MS-Excel is used to plot the graph. Cylinder with larger aspect ratio shows increase in heat absorption capacity by 5.26% at the end of 4200 s and hence have a high melting rate. 3% decrease in temperature rise is seen in cylindrical capsule of aspect ratio 0.5 as compared to cylindrical capsule of aspect ratio 2. Out of five primitive shapes namely cylinder, cube, frustum, sphere, and hemisphere, hemisphere shows the highest melting rate and sphere has lowest melting rate for fix volume of phase change material. 23.5% decrease in total enthalpy is noted in spherical capsule as compared to hemispherical one by the time of 1700s.

Keywords

  • Phase change material,
  • Heat storage,
  • Macro encapsulation,
  • Melting behavior,
  • Melting and solidification modeling

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