摘要
This study evaluates the effectiveness of phase change materials (PCMs) inside a storage tank of warm water for solar water heating (SWH) system through the theoretical simulation based on the experimental model of S. Canbazoglu et al. The model is explained by five fundamental equations for the calculation of various parameters like the effectiveness of PCMs, the mass of hot water, total heat content, and duration of charging. This study simulated eleven PCMs to analyze their effectiveness like Sodium hydrogen phosphate dodecahydrate (SHPD), OM 37, N-Eicosane (NE), Lauric acid (LA), Paraffin wax (PW), OM 48, Paraffin wax C20-33 (PW-C20-33), Sodium acetate trihydrate (SAT), Palmitic acid (PA), Myristic acid (MA), and Stearic acid (SA). Among all PCMs, the SHPD has found the highest value of effectiveness factor of 3.27. So, it is the most recommended PCM for the storage tank of the SWH system. The study also includes the melt fraction analysis of all enumerated PCMs corresponding to container materials of stainless steel, glass, aluminum mixed, tin, aluminum, and copper. This melt fraction analysis is performed by making a coding program in the FORTRAN programming language. Through the analysis, copper container material is found to have high melting rate for all PCMs so it is superior to other container materials.
Abstract
This study evaluates the effectiveness of phase change materials (PCMs) inside a storage tank of warm water for solar water heating (SWH) system through the theoretical simulation based on the experimental model of S. Canbazoglu et al. The model is explained by five fundamental equations for the calculation of various parameters like the effectiveness of PCMs, the mass of hot water, total heat content, and duration of charging. This study simulated eleven PCMs to analyze their effectiveness like Sodium hydrogen phosphate dodecahydrate (SHPD), OM 37, N-Eicosane (NE), Lauric acid (LA), Paraffin wax (PW), OM 48, Paraffin wax C20-33 (PW-C20-33), Sodium acetate trihydrate (SAT), Palmitic acid (PA), Myristic acid (MA), and Stearic acid (SA). Among all PCMs, the SHPD has found the highest value of effectiveness factor of 3.27. So, it is the most recommended PCM for the storage tank of the SWH system. The study also includes the melt fraction analysis of all enumerated PCMs corresponding to container materials of stainless steel, glass, aluminum mixed, tin, aluminum, and copper. This melt fraction analysis is performed by making a coding program in the FORTRAN programming language. Through the analysis, copper container material is found to have high melting rate for all PCMs so it is superior to other container materials.
关键词
theoretical model /
solar water heating system /
phase change material /
effectiveness factor /
melt fraction
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Key words
theoretical model /
solar water heating system /
phase change material /
effectiveness factor /
melt fraction
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参考文献
[1] Singh S., Anand A., Shukla A., Sharma A., Technical, financial, and environmental feasibility of solar water heater for residential, commercial, and industrial application: A theoretical approach. Materials Science for Energy Technologies, 2020, 3: 648–671. https://doi.org/10.1016/j.mset.2020.07.001.
[2] Singh S., Anand A., Shukla A., Sharma A., Environmental, technical and financial feasibility study of domestic solar water heating system in India. Sustainable Energy Technologies and Assessments, 2021, 43: 100965. https://doi.org/10.1016/j.seta.2020.100965.
[3] Dzikevics M., Zandeckis A., Mathematical model of packed bed solar thermal energy storage simulation. Energy Procedia, 2015, 72: 95–102. https://doi.org/10.1016/j.egypro.2015.06.014.
[4] Ebadi S., Tasnim S.H., Aliabadi A.A., Mahmud S., Melting of nano-PCM inside a cylindrical thermal energy storage system: Numerical study with experimental verification. Energy Conversion and Management, 2018, 166: 241–259. https://doi.org/10.1016/j.enconman.2018.04.016.
[5] Hahne E., Chen Y., Numerical study of flow and heat transfer characteristics in hot water stores. Solar Energy, 1998, 64: 9–18. https://doi.org/10.1016/S0038-092X(98)00051-6.
[6] Felix Regin A., Solanki S.C., Saini J.S., An analysis of a packed bed latent heat thermal energy storage system using PCM capsules: Numerical investigation. Renewable Energy, 2009, 34: 1765–1773. https://doi.org/10.1016/j.renene.2008.12.012.
[7] Ismail K.A.R., Henrı́quez J.R., Numerical and experimental study of spherical capsules packed bed latent heat storage system. Applied Thermal Engieering, 2002, 22: 1705–1716. https://doi.org/10.1016/S1359-4311(02)00080-7.
[8] Xia L., Zhang P., Wang R.Z., Numerical heat transfer analysis of the packed bed latent heat storage system based on an effective packed bed model. Energy, 2010, 35: 2022–2032. https://doi.org/10.1016/j.energy.2010.01.018.
[9] Raul A., Jain M., Gaikwad S., Saha S.K., Modelling and experimental study of latent heat thermal energy storage with encapsulated PCMs for solar thermal applications. Applied Thermal Engieering, 2018, 143: 415–428. https://doi.org/10.1016/j.applthermaleng.2018.07.123.
[10] Bouhal T., El Rhafiki T., Kousksou T., Jamil A., Zeraouli Y., PCM addition inside solar water heaters: Numerical comparative approach. Journal of Energy Storage, 2018, 19: 232–246. https://doi.org/10.1016/j.est.2018.08.005.
[11] Bellan S., Alam T.E., González-Aguilar J., Romero M., Rahman M.M., Goswami D.Y., Stefanakos E.K., Numerical and experimental studies on heat transfer characteristics of thermal energy storage system packed with molten salt PCM capsules. Applied Thermal Engieering, 2015, 90: 970–979. https://doi.org/10.1016/j.applthermaleng.2015.07.056.
[12] Liu Z., Ma C., Numerical analysis of melting with constant heat flux heating in a thermal energy storage system. Energy Conversion and Management, 2002, 43: 2521–2538. https://doi.org/10.1016/S0196-8904(01)00190-X.
[13] Majumdar R., Saha S.K., Effect of varying extent of PCM capsule filling on thermal stratification performance of a storage tank. Energy, 2019, 178: 1–20. https://doi.org/10.1016/j.energy.2019.04.101.
[14] Kousksou T., Bruel P., Cherreau G., Leoussoff V., El Rhafiki T., PCM storage for solar DHW: From an unfulfilled promise to a real benefit. Solar Energy, 2011, 85: 2033–2040. https://doi.org/10.1016/j.solener.2011.05.012.
[15] Zivkovic B., Fujii I., An analysis of isothermal phase change of phase change. Solar Energy, 2001, 70: 51–61.
[16] Canbazoğlu S., Şahinaslan A., Ekmekyapar A., Aksoy Ý.G., Akarsu F., Enhancement of solar thermal energy storage performance using sodium thiosulfate pentahydrate of a conventional solar water-heating system. Energy and Buildings, 2005, 37: 235–242. https://doi.org/10.1016/j.enbuild.2004.06.016.
[17] Lane G.A., Solar heat storage: Latent heat materials. CRC Press, 1983.
[18] G.A. Lane, Solar heat storage : Latent heat materials Volume II , CRC Press, 2018.
[19] Xu Q., Akkurt N., Zou Z., et al., Synthesis and characterization of disodium hydrogen phosphate dodecahydrate-lauric-palmitic acid used for indoor energy storage floor units. Journal of Thermal Science, 2020, 29: 477–485. https://doi.org/10.1007/s11630-020-1273-7.
[20] Sharma A., Shukla A., Chen C.R., Dwivedi S., Development of phase change materials for building applications. Energy and Buildings, 2013, 64: 403–407. https://doi.org/10.1016/j.enbuild.2013.05.029.
[21] Mettawee E.-B.S., Assassa G.M.R., Thermal conductivity enhancement in a latent heat storage system. Solar Energy, 2007, 81: 839–845. https://doi.org/10.1016/j.solener.2006.11.009.
[22] Ukrainczyk N., Kurajica S., Šipušić J., Thermophysical comparison of five commercial paraffin waxes as latent heat storage materials. Chemical and Biochemical Engineering Quarterly, 2010, 24: 129–137. https://doi.org/10.15255/CABEQ.2014.240.
[23] Dannemand M., Johansen J.B., Furbo S., Solidification behavior and thermal conductivity of bulk sodium acetate trihydrate composites with thickening agents and graphite. Solar Energy Materials and Solar Cells, 2016, 145: 287–295. https://doi.org/10.1016/j.solmat.2015.10.038.
[24] Anand A., Shukla A., Sharma A., Numerical heat transfer study of energy storage materials used in the latent heat storage system. Materials Science for Energy Technologies, 2020, 3: 633–639. https://doi.org/10.1016/j.mset.2020.06.007.
[25] Voller V.R., Fast imlicit finite-difference method for the analysis of phase change problems. Numerical Heat Transfer, Part B, Fundamentals: An International Journal of Computation and Methodology, 1990, 17: 155–169.
[26] Patankar S.V., Numerical heat transfer and fluid flow. Hemisphere Publishing Corporation, Washington, New York, London, McGraw Hill Book Company, 1980, 53: 225.
[27] Costa M., Buddhi D., Oliva A., Numerical simulation of a latent heat thermal energy storage system with enhanced heat conduction. Energy Conversion and Management, 1998, 39: 319–330.
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脚注
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基金
The author (Abhishek Anand) is highly obliged to the University Grants Commission (UGC) & Ministry of Human Resource Development (MHRD), Government of India, New Delhi for providing the Junior Research Fellowship (JRF). Further, the authors are also thankful to the Council of Science and Technology, UP (Reference No, CST 3012-dt.26-12-2016) for providing research grants to carry out the work at the institute.
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版权
Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023