HEAT TRANSFER WITH PHASE CHANGE AROUND FINNED TUBE SUBMERSED IN PCM

2018 ◽  
Author(s):  
Felipe Silva dos Santos ◽  
Kamal Ismail ◽  
Fátima Lino
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Finned Tube

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

2019 ◽  
Vol 116 ◽  
pp. 00038 ◽  
Author(s):  
Maria K. Koukou ◽  
Michail Gr. Vrachopoulos ◽  
George Dogkas ◽  
Christos Pagkalos ◽  
Kostas Lymperis ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Finned Tube ◽  
Heat Transfer Fluid ◽  
Outlet Temperature ◽  
Change Material

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.

Exergo-economic analysis of finned tube for waste heat recovery including phase change heat transfer

2013 ◽  
Vol 27 (11) ◽  
pp. 3513-3523
Author(s):  
Shuang-Ying Wu ◽  
Jing-Rui Jiu ◽  
Lan Xiao ◽  
You-Rong Li ◽  
Chao Liu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Economic Analysis ◽  
Phase Change ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Finned Tube ◽  
Phase Change Heat Transfer

scholarly journals Study on heat transfer enhancement of solar finned tube phase change regenerator

2020 ◽  
Vol 615 ◽  
pp. 012070
Author(s):  
Jingzhi Jiang ◽  
Zhengjia Chen ◽  
Lin Bo ◽  
Haiting Cui ◽  
Peiying Peng
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Heat Transfer Enhancement ◽  
Finned Tube ◽  
Transfer Enhancement

Effect of Finned-Tube on the Enhancement of Melting Process of PCM in Eccentric Cylinders

2020 ◽  
Vol 22 (4) ◽  
pp. 975-982
Author(s):  
S. Khaldi ◽  
A. Nabil Korti ◽  
S. Abboudi
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Numerical Simulations ◽  
Phase Change Material ◽  
Melting Process ◽  
Finned Tube ◽  
Eccentric Cylinders ◽  
Horizontal Cylinders ◽  
Volume Method ◽  
Change Material

AbstractThe process of melting of a phase-change material (PCM) in eccentric horizontal cylinders geometry is studied numerically. Numerical simulations are performed for symmetric melting of phase change material between the two cylinders using the finite volume method. The inner cylinder is a finned-tube to enhance the heat transfer between the inner cylinder and the PCM. Inner cylindrical is considered as hot wall while outer is insulated. These simulations show the melting process from the beginning to the end. As result, it is found that the use of fins on the inner tube increases the melting process by decreasing the time of melting by 72.72 %.

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