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Numerical analysis and comparison of the thermal performance enhancement methods for metal foam/phase change material composite
- Source :
- Applied Thermal Engineering, Applied Thermal Engineering, 2016, 109, pp.373-383. ⟨10.1016/j.applthermaleng.2016.08.088⟩, Applied Thermal Engineering, Elsevier, 2016, 109, pp.373-383. ⟨10.1016/j.applthermaleng.2016.08.088⟩
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- International audience; Three methods to further enhance thermal performance of the metal foam/phase change material (PCM) composite are investigated and compared. These three methods include changing the pores per inch (PPI) of metal foam, modifying the shape of the cold wall and using the discrete heat sources. In this study, the composite consists of two materials: aluminum foam with 90% porosity as metal foam and paraffin wax as PCM. The numerical model based on finite volume method is developed, and the non-equilibrium equation is applied to study the melting process of the paraffin embedded in aluminum foam. The heat loss, the liquid average velocity and the efficiency of latent heat storage are analyzed and discussed. The results show that adopting the aluminum foam with high PPI value or modifying the shape of the cold wall could improve the thermal response of composite. Besides, the discrete heat sources could lead to a large average velocity in the liquid region. Combining the advantages of these methods, an optimization method is also proposed, which could improve the efficiency to 83.32% comparing with the pure paraffin.
- Subjects :
- Finite volume method
Materials science
Chemical substance
020209 energy
Composite number
Energy Engineering and Power Technology
Mechanical engineering
02 engineering and technology
Metal foam
021001 nanoscience & nanotechnology
7. Clean energy
Phase-change material
Industrial and Manufacturing Engineering
Paraffin wax
Thermal
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
0202 electrical engineering, electronic engineering, information engineering
Composite material
0210 nano-technology
Porosity
Subjects
Details
- Language :
- English
- ISSN :
- 13594311
- Database :
- OpenAIRE
- Journal :
- Applied Thermal Engineering, Applied Thermal Engineering, 2016, 109, pp.373-383. ⟨10.1016/j.applthermaleng.2016.08.088⟩, Applied Thermal Engineering, Elsevier, 2016, 109, pp.373-383. ⟨10.1016/j.applthermaleng.2016.08.088⟩
- Accession number :
- edsair.doi.dedup.....44e8bdc6dd6ecfda9309748de8a400a2