Glauber's Salt Composites for HVAC Applications: A Study on the Use of the T-History Method with a Modified Data Evaluation Methodology.

Veeresh Ayyagari, Amir Shooshtari, Michael Ohadi

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Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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3 authors.

Veeresh AyyagariDepartment of Mechanical Engineering, A James Clark School of Engineering, University of Maryland, College Park, MD 20742, USA.

Amir ShooshtariDepartment of Mechanical Engineering, A James Clark School of Engineering, University of Maryland, College Park, MD 20742, USA.ORCID 0000-0003-0440-3491

Michael OhadiDepartment of Mechanical Engineering, A James Clark School of Engineering, University of Maryland, College Park, MD 20742, USA.

Funding

UMD's Advanced Heat Exchangers and Process Intensification Consortium N/AUnited States Department of Energy DE-EE0010911

6 · The paper itself

Abstract

Phase change materials (PCMs) can be utilized in buildings for peak load shifting in air conditioning systems, and the use of salt hydrate-based PCMs can reduce the cost of thermal energy storage devices. Glauber's salt is an economical salt hydrate PCM with a melting point of around 32 °C. However, the desired melting range typically falls between 18 and 22 °C for building air conditioning applications. Although many researchers have characterized Glauber's salt and its composites with modified melting points, enthalpy-temperature curves for composites of Glauber's salt and NaCl are unavailable. In this study, we report the melting and solidification enthalpy-temperature curves for two different composites of Glauber's salt and NaCl with a melting point of 21 °C obtained by the T-history method. Both composites contain NaCl to suppress the melting point, borax to reduce supercooling, and sodium polyacrylate as a thickener to enhance cyclic stability. The first composite with 12 wt.% NaCl demonstrated 139 kJ·kg

Indexed as

Glauber’s saltmelting point suppressionphase change materialT-history

Identifiers

PMID40649485

DOI10.3390/ma18132998

PMCPMC12250917

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