• LAPONITE$^{\circledR}$based hydrogel for cold thermal energy storage application

• # Fulltext

https://www.ias.ac.in/article/fulltext/boms/044/0110

• # Keywords

Water; LAPONITE$^{\circledR}$; hydrogel; insulation layer; phase change material (PCM); cold thermal energy storage.

• # Abstract

Water is an inorganic, non-flammable and easily available phase change material (PCM), which can be utilized for cold thermal energy storage (TES) application (melting point at 0$^{\circ}$C). Although water has a specific heat ofabout 4.18 J g$^{–1}$ K$^{–1}$ and has melting enthalpy of about 333 J g$^{–1}$, its application as an insulation layer was constrained. Phase separation (bulk convective movement during phase change, between ice and water), leakage from the container, supercooling during freezing, volumetric expansion and corrosion to the container were the main concerns for water as an insulation layer in TES systems. In this study, a thick non-flowing hydrogel (shape-stabilized PCM) was prepared by adding a small amount of inorganic additive material called LAPONITE$^{\circledR}$in water. The idea is to propose this thick nonflowing hydrogel as an insulating layer for cold TES application. The effect of this additive on viscosity and thermal properties of the water was studied. The phase change phenomenon of this hydrogel (between –10 and 20$^{\circ}$C) was compared with water and the results are discussed.

• # Author Affiliations

1. Department of Chemical Engineering and Engineering Sciences, Rajiv Gandhi Institute of Petroleum Technology, Jais 229304, India

• # Bulletin of Materials Science

Volume 45, 2022
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020