Thermal performance of a tapered store containing tubes of phase change material: Cooling cycle

The thermal performance of a tapered store, including constant cross-section phase change material (PCM) tubes, was investigated. Three different air flow rates and four different air inlet temperatures were used in the tests. The PCM utilized was a mixture of sodium sulphate and sodium chloride sal...

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Bibliographic Details
Published inEnergy conversion and management Vol. 38; no. 4; pp. 333 - 340
Main Author Kürklü, Ahmet
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.03.1997
Elsevier
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
PCM
Tapered store
Thermal performance
Transport and storage of energy
Tapered store
Thermal performance
PCM
Design
PCM material
Experimental study
Performance
Latent heat storage
Energy storage
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Summary:The thermal performance of a tapered store, including constant cross-section phase change material (PCM) tubes, was investigated. Three different air flow rates and four different air inlet temperatures were used in the tests. The PCM utilized was a mixture of sodium sulphate and sodium chloride salts, together with additives and gelling agent. The results showed that the cycle time was shortened as the air inlet temperature was decreased. The same effect was obtained when the air flow rate was increased. An even temperature distribution was observed at the center position within the PCM along the tubes. This was a consequence of increasing the air velocity along the store. Heat transfer rates along the store were found to be close to each other. The average effectiveness of the store was found to be around 44%.
ISSN:0196-8904
1879-2227
DOI:10.1016/S0196-8904(96)00053-2