The study on paraffin-water emulsion PCM with low supercooling degree

Xiyao Zhang, Jianlei Niu, Jianyong Wu, Shuo Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

This study aims to develop paraffin waxes based phase change material emulsion with low supercooling degree, which can be applied in a Thermal Energy Storage (TES) systems to maximize the use of natural heating and cooling sources via solar thermal collectors or evaporative coolers, and to raise the energy efficiency of the chillers operating at off-peak period. In this study, a kind of hexadecane-water emulsion with small droplet size was prepared and analyzed. The modified Multi-Wall Carbon Nano-Tube (MWCNT) particles were dispersed in emulsion as the nucleating agent to reduce supercooling degree. The MWCNT particles were modified with strong acids H2SO4 and HNO3 to increase the compatibility with the organic liquid. Thermal analysis of the hexadecane-water emulsions with well-dispersed MWCNT particles by Differential Scanning Calorimeter (DSC) indicated that the supercooling degree of emulsion was significantly decreased. The effective ranges of nucleating agent concentration were summarized which provided a promising way of improving the performance of system energy efficiency in TES systems.
Original languageEnglish
Title of host publicationProceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning
Subtitle of host publicationHVAC and R Component and Energy System
Pages19-26
Number of pages8
EditionVOL. 2
DOIs
Publication statusPublished - 24 Feb 2014
Event8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013 - Xi'an, China
Duration: 19 Oct 201321 Oct 2013

Publication series

NameLecture Notes in Electrical Engineering
NumberVOL. 2
Volume262 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013
CountryChina
CityXi'an
Period19/10/1321/10/13

Keywords

  • Emulsion
  • MWCNT
  • Nucleating agent
  • PCM
  • Supercooling
  • TES

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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