Table of Contents
Journal of Thermodynamics
Volume 2016, Article ID 5384640, 8 pages
http://dx.doi.org/10.1155/2016/5384640
Research Article

The Role of Soya Oil Ester in Water-Based PCM for Low Temperature Cool Energy Storage

1Mechanical Engineering, Bali State Polytechnic, Bali 80361, Indonesia
2Department of Mechanical Engineering, Brawijaya University, Malang 65151, Indonesia

Received 5 June 2016; Revised 27 July 2016; Accepted 2 August 2016

Academic Editor: M. A. Rosen

Copyright © 2016 I. M. Rasta et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study focuses on the preparation of the water-based phase change material (PCM) with very small soya oil solution for low temperature latent heat thermal energy storage (LHTES). Soya oil ester is soluble very well in water and acts as nucleating agent for a novel solid-liquid PCM candidate that is suitable for low temperature cool storage in the range between −9°C and −6°C. Thermal energy storage properties of the water with very small soya oil ester solution were measured by T-history method. The experimental results show that very small amount of soya oil ester in water can lower the freezing point and trigger ice nucleation for elimination of the supercooling degree. The phase transition temperatures of the water-based PCMs with soya oil as nucleate agent were lower than those of individual water. The thermal properties make it potential PCM for LHTES systems used in low temperature cool energy storage applications.