A thermal stability study of the urea-sodium nitrate eutectic mixture as a PCM

  • L. Quant*
  • , G. Diarce
  • , Campos-Celador
  • , A. García-Romero
  • , D. Haillot
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The eutectic mixture formed by urea and sodium nitrate has been previously identified as a PCM candidate by the authors for heating and domestic hot water storage applications. It presents a melting point of 86 °C, a melting enthalpy of 172 J/g and a price around 0.9 €/kg. In a previous work of some of the authors, the thermal stability of the eutectic mixture was preliminarily evaluated using an accelerated thermal cycling test that comprised 210 thermal cycles. Under the experimental conditions applied, the PCMs showed a stable behaviour. The main objective of the present work is to evaluate the stability of the mixture for longer periods of use under conditions representative of actual applications. Thermal degradation segregation will be assessed experimentally close to operation conditions.

Original languageEnglish
Title of host publication12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018 - Proceedings
EditorsSebastien Poncet
PublisherInternational Institute of Refrigeration
Pages334-339
Number of pages6
ISBN (Electronic)9782362150258
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018 - Orford, Canada
Duration: 21 May 201823 May 2018

Publication series

NameRefrigeration Science and Technology
Volume2018-May
ISSN (Print)0151-1637

Conference

Conference12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018
Country/TerritoryCanada
CityOrford
Period21/05/1823/05/18

Keywords

  • LHTES
  • PCM
  • Sodium nitrate
  • Thermal degradation
  • Urea

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