Heat transfer of phase change materials (PCMs) in porous materials
Received date: 23 Oct 2010
Accepted date: 21 Dec 2010
Published date: 05 Jun 2011
Copyright
In this paper, the feasibility of using metal foams to enhance the heat transfer capability of phase change materials (PCMs) in low- and high-temperature thermal energy storage systems was assessed. Heat transfer in solid/liquid phase change of porous materials (metal foams and expanded graphite) at low and high temperatures was investigated. Organic commercial paraffin wax and inorganic calcium chloride hydrate were employed as the low-temperature materials, whereas sodium nitrate was used as the high-temperature material in the experiment. Heat transfer characteristics of these PCMs embedded with open-cell metal foams were studied. Composites of paraffin and expanded graphite with a graphite mass ratio of 3%, 6%, and 9% were developed. The heat transfer performances of these composites were tested and compared with metal foams. The results indicate that metal foams have better heat transfer performance due to their continuous inter-connected structures than expanded graphite. However, porous materials can suppress the effects of natural convection in liquid zone, particularly for PCMs with low viscosities, thereby leading to different heat transfer performances at different regimes (solid, solid/liquid, and liquid regions). This implies that porous materials do not always enhance heat transfer in every regime.
C Y ZHAO , D ZHOU , Z G WU . Heat transfer of phase change materials (PCMs) in porous materials[J]. Frontiers in Energy, 2011 , 5(2) : 174 -180 . DOI: 10.1007/s11708-011-0140-3
1 |
Atul S, Tyagi V V, Chen C R, Buddhi D. Review on thermal energy storage with phase change materials and applications. Renewable & Sustainable Energy Reviews, 2009, 13(2): 318–345
|
2 |
Bugaje I M. Enhancing the thermal response of latent heat storage systems. International Journal of Energy Research, 1997, 21(9): 759–766
|
3 |
Koh J C Y, Stevens R L. Enhancement of cooling effectiveness by porous material in coolant passage. ASME Journal of Heat Transfer, 1975, 97(2): 309–311
|
4 |
Chow L C, Zhong J K, Beam J E. Thermal conductivity enhancement for phase change storage media. International Communications in Heat and Mass Transfer, 1996, 23(1): 91–100
|
5 |
Erk H F, Dudukovic M P. Phase-change heat regenerators: modeling and experimental studies. AIChE Journal. American Institute of Chemical Engineers, 1996, 42(3): 791–808
|
6 |
Chapotard C, Tondeur D. Dynamics of latent heat storage in fixed beds, a non-linear equilibrium model, the analogy with chromatography. Chemical Engineering Communications, 1983, 24(4): 183–204
|
7 |
Py X, Olives R, Mauran S. Paraffin/porous graphite-matrix composite as a high and constant power thermal storage material. International Journal of Heat and Mass Transfer, 2001, 44(14): 2727–2737
|
8 |
Fukai J, Hamada Y, Morozumi Y, Miyatake O. Effect of carbon-fiber brushes on conductive heat transfer in phase change materials. International Journal of Heat and Mass Transfer, 2002, 45(24): 4781–4792
|
9 |
Fukai J, Hamada Y, Morozumi Y, Miyatake O. Improvement of thermal characteristics of latent heat thermal energy storage units using carbon-fiber brushes: experiments and modeling. International Journal of Heat and Mass Transfer, 2003, 46(23): 4513–4525
|
10 |
Elgafy A, Lafdi K. Effect of carbon nanofiber additives on thermal behavior of phase change materials. Carbon, 2005, 43(15): 3067–3074
|
11 |
Hoogendoom C J, Bart G C J. Performance and modeling of latent heat storage. Solar Energy, 1992, 48(1): 53–58
|
12 |
Mauran S, Prades P, L’haridon F. Heat and mass transfer in consolidated reacting beds for thermochemical systems. Heat Recovery Systems and CHP, 1993, 13(4): 315–319
|
13 |
Tong X L, Amin M R, Khan J A. Enhancement of heat transfer by inserting a metal matrix into a phase change material. Numerical Heat Transfer Part A. Applications, 1996, 30(2): 125–141
|
14 |
Pincemin S, Olives R, Py X, Christ M. Highly conductive composites made of phase change materials and graphite for thermal storage. Solar Energy Materials and Solar Cells, 2008, 92(6): 603–613
|
15 |
Lafdi K, Mesalhy O, Elgafy A. Graphite foams infiltrated with phase change materials as alternative materials for space and terrestrial thermal energy storage applications. Carbon, 2008, 46(1): 159–168
|
16 |
Pincemin S, Py X, Olives R, Christ M, Oettinger O. Elaboration of conductive thermal storage composites made of phase change materials and graphite for solar plant. Journal of Solar Energy Engineering, 2008, 130(1): 011005
|
17 |
Siahpush A, O'Brien J, Crepeau J. Phase change heat transfer enhancement using copper porous foam. ASME Journal of Heat Transfer, 2008, 130(8): 082301
|
18 |
Bhattacharya A, Calmidi V V, Mahajan R L. Thermophysical properties of high porosity metal foams. International Journal of Heat and Mass Transfer, 2002, 45(5): 1017–1031
|
19 |
Boomsma K, Poulikakos D, Zwick F. Metal foams as compact high performance heat exchangers. Mechanics of Materials, 2003, 35(12): 1161–1176
|
20 |
Zhao C Y, Kim T, Lu T J, Hodson H P. Thermal transport in high porosity cellular metal foams. Journal of Thermophysics and Heat Transfer, 2004, 18(3): 309–317
|
21 |
Zhao C Y, Lu T J, Hodson H P, Jackson J D. The temperature dependence of effective thermal conductivity of open-celled steel alloy foams. Materials Science and Engineering: A, 2004, 367(1,2): 123–131
|
22 |
Zhao C Y, Lu T J, Hodson H P. Natural convection in metal foams with open cells. International Journal of Heat and Mass Transfer, 2005, 48(12): 2452–2463
|
23 |
Zhao C Y, Lu T J, Hodson H P. Thermal radiation in ultralight metal foams with open cells. International Journal of Heat and Mass Transfer, 2004, 47(14-16): 2927–2939
|
24 |
Zhao C Y, Lu T J, Tassou S A. Analytical considerations of thermal radiation in cellular metal foams with open cells. International Journal of Heat and Mass Transfer, 2008, 51(3, 4): 929–940
|
25 |
Zhao C Y, Lu W, Tassou S A. Flow boiling heat transfer in horizontal metal foam tubes. ASME Journal of Heat Transfer, 2009, 131(12): 121002
|
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