What is it about?

A proper storage temperature is an important criterion for selecting a phase change material (PCM) for a passive solar heating application. Here we describe a novel procedure to produce a mixture of carboxylic acids with a melting temperature adjustable to the climate specific requirements. The approach is based on the ideal solution model and differential scanning calorimetry (DSC). The applicability of the method is demonstrated and it is also applied to a PCM wall design. The accuracy of the theoretical model is ±2°C in the temperature range of 20°–30°C and even a ±0.5°C accuracy can be obtained by the experimental procedure

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Perspectives

This paper shows a simple method to design an optimal phase-change storage for solar houses. The method is generic and can be applied all over the world.

Professor Peter D. Lund
Aalto University

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This page is a summary of: An organic PCM storage system with adjustable melting temperature, Solar Energy, January 1991, Elsevier,
DOI: 10.1016/0038-092x(91)90094-d.
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