Latent Thermal Energy Storage System for Heat Recovery between 120 and 150 °C: Material Stability and Corrosion

Author:

Lalau Yasmine12ORCID,Rigal Sacha1,Bédécarrats Jean-Pierre1ORCID,Haillot Didier3ORCID

Affiliation:

1. Universite de Pau et des Pays de l’Adour, E2S UPPA, LaTEP, 64000 Pau, France

2. Université de Toulouse, IMT Mines Albi, CNRS UMR 5302, Centre RAPSODEE, Campus Jarlard, CEDEX 09, 81013 Albi, France

3. Département de Génie Mécanique, École de Technologie Supérieure, 1100, Rue Notre-Dame Ouest, Montréal, QC H3C1K3, Canada

Abstract

Thermal energy represents more than half of the energy needs of European industry, but is still misspent in processes as waste heat, mostly between 100 and 200 °C. Waste heat recovery and reuse provide carbon-free heat and reduce production costs. The industrial sector is seeking affordable and rugged solutions that should adapt the heat recovery to heat demand. This study aims to identify suitable latent heat materials to reach that objective: the selected candidates should show good thermal performance that remains stable after aging and, in addition, be at a reasonable price. This paper details the selection process and aging results for two promising phase change materials (PCMs): adipic and sebacic acid. They showed, respectively, melting temperatures around 150 °C and 130 °C, degradation temperatures (mass lost higher than 1%) above 180 °C, and volumetric enthalpy of 95 and 75 kWh·m−3. They are both compatible with the stainless steel 316L while their operating temperature does not exceed 15 °C above the melting temperature, but they do not comply with the industrial recommendation for long-term use in contact with the steel P265GH (corrosion speed > 0.2 mm·year−1).

Funder

French National Research Agency

Publisher

MDPI AG

Reference43 articles.

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2. Industrial waste heat: Estimation of the technically available resource in the EU per industrial sector, temperature level and country;Papapetrou;Appl. Therm. Eng.,2018

3. Johnson, I., Choate, W.T., and Davidson, A. (2008). Waste Heat Recovery. Technology and Opportunities in U.S. Industry, US Department of Energy.

4. Environmental profile of latent energy storage materials applied to industrial systems;Ferreira;Sci. Total Environ.,2014

5. A review on thermal energy storage applicable for low- and medium-temperature organic Rankine cycle;Daniarta;Energy,2023

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