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dc.contributor.authorQin, Zhenen_US
dc.contributor.authorJi, Chenzhenen_US
dc.contributor.authorLow, Zheng Huaen_US
dc.contributor.authorTong, Weien_US
dc.contributor.authorWu, Chenlongen_US
dc.contributor.authorDuan, Feien_US
dc.identifier.citationQin, Z., Ji, C., Low, Z. H., Tong, W., Wu, C. & Duan, F. (2022). Geometry effect of phase change material container on waste heat recovery enhancement. Applied Energy, 327, 120108-.
dc.description.abstractWaste heat recovery from industrial exhaust gases is a key method to reduce fuel consumption and improve system energy efficiency. Phase change materials (PCMs) are one of the major media in the waste heat storing and recovering processes. The PCM container geometry is a crucial design factor but attracts less attention for its effect on the PCM melting and heat storage operation. This study simulates the melting behaviour and heat storage performance in the PCM storage containers with the same cross area but different configurations with the rectangular shape and ones with concave folded sidewalls and protruding folded sidewalls. The geometry variation on PCM containers influences both the contact area with the hot airflow and natural convection in the melting phase of PCMs. The three-dimensional transient modelling indicates that the natural convection currents enhance the PCM melting and thermal storage rates. The PCM container design angle, α, shows a remarkable impact on the natural convection strength, PCM melting time, and energy storage rate. The protruding-shaped container with α at 133.8∘ presents the least melting time of 4,645 s, reducing 24.9% of the melting time in comparison to the rectangular chamber as the baseline with α= 90 ∘. The study can inspire the design of PCM storage geometries with efficient waste heat recovery in the industrial applications.en_US
dc.relation.ispartofApplied Energyen_US
dc.rights© 2022 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleGeometry effect of phase change material container on waste heat recovery enhancementen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.subject.keywordsPhase Change Materialsen_US
dc.subject.keywordsStorage Container Geometryen_US
dc.description.acknowledgementC. Ji thanks the support from Shanghai Committee of Science and Technology (grant No. 21ZR1466000, 21PJ1412700), China.en_US
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