Testing the performance of a prototype thermal energy storage tank working with organic phase change material for space heating application conditions

A prototype Latent Heat Thermal Energy Storage (LHTES) unit has been designed, constructed, and experimentally analysed for its thermal storage performance under different operational conditions considering heating application and exploiting solar and geothermal energy. The system consists of a rect...

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Bibliographic Details
Published in:E3S web of conferences 2019-01, Vol.116, p.38
Main Authors: Koukou, Maria K., Vrachopoulos, Michail Gr, Dogkas, George, Pagkalos, Christos, Lymperis, Kostas, Coelho, Luis, Rebola, Amandio
Format: Article
Language:English
Subjects:
Energy sources
Energy storage
Flow rates
Flow velocity
Geothermal energy
Heat exchangers
Heat pumps
Heat transfer
Internal energy
Latent heat
Phase change materials
Prototypes
Solar energy
Space heating
Storage capacity
Storage tanks
Thermal energy
Thermal storage
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Summary:A prototype Latent Heat Thermal Energy Storage (LHTES) unit has been designed, constructed, and experimentally analysed for its thermal storage performance under different operational conditions considering heating application and exploiting solar and geothermal energy. The system consists of a rectangular tank filled with Phase Change Material (PCM) and a finned tube staggered Heat Exchanger (HE) while water is used as Heat Transfer Fluid (HTF). Different HTF inlet temperatures and flow rates were tested to find out their effects on LHTES performance. Thermal quantities such as HTF outlet temperature, heat transfer rate, stored energy, were evaluated as a function of the conditions studied. Two commercial organic PCMs were tested A44 and A46. Results indicate that A44 is more efficient during the charging period, taking into account the two energy sources, solar and heat pump. During the discharging process, it exhibits higher storage capacity than A46. Concluding, the developed methodology can be applied to study different PCMs and building applications.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/201911600038