Abstract
Thermochemical heat storage system has a great potential due to its advantages of high heat storage density and long storage time. In this paper, a thermochemical heat storage system is designed based on Mg(OH)2/MgO and a two-dimensional mathematical model of exothermic process of the thermochemical energy storage reactor is established, which can be applied in residential buildings. The heat storage and exothermic processes of the heat storage units (HSU) are investigated by numerical simulation. The third boundary condition is adopted and the temperature change of the heat transfer fluid (HTF) in the channel is considered. After modeling the whole system, some parameters of the system are optimized, including the size of HSU, the inlet temperature of HTF, and the pressure of reaction bed, which is helpful to guide the design of thermochemical heat storage equipment in future. In addition, the results reveal that the reaction limit is in good agreement with previous literature and the energy storage density of magnesium-based thermochemical energy storage system is much higher than ordinary phase change materials such as paraffin. The heat storage system is expected to be a new type of heat storage system.
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References
Abedin, A.H., Rosen, M.A.: A critical review of thermochemical energy storage systems. Open Renew. Energy J. 4(4), 42–46 (2011)
N’Tsoukpoe, K.E., et al.: A review on long-term sorption solar energy storage. Renew. Sustain. Energy Rev. 13(9), 2385–2396 (2009)
Ding, Y., Riffat, S.B.: Thermochemical energy storage technologies for building applications: a state-of-the-art review. Int. J. Low-Carbon Technol. 8(2), 106–116 (2013)
G. Ervin.: Solar heat storage using chemical reactions. Sol. Heat Storage Using Chem. React. 22(1), 51–61 (1977)
Garg, H.P., et al.: Solar Thermal Energy Storage. D. Reidel, Netherlands (1985)
Kato, Y., et al.: Durability to repetitive reaction of magnesium oxide/water reaction system for a heat pump. Appl. Therm. Eng. 18(18), 85–92 (1998)
Razouk, R.I., Mikhail, R.S.: The sorption of water vapor on magnesium oxide. J. Phys. Chem. 59(7), 636–640 (1955)
Kato, Y., et al.: Kinetic study of the hydration of magnesium oxide for a chemical heat pump. Appl. Therm. Eng. 16(11), 853–862 (1996)
Kato, Y., et al.: Thermal analysis of a magnesium oxide/water chemical heat pump for cogeneration. Appl. Therm. Eng. 21(10), 1067–1081 (2001)
Kato, Y., et al.: Thermal performance of a packed bed reactor of a chemical heat pump for cogeneration. Chem. Eng. Res. Des. 78(5), 745–748 (2000)
Kato, Y., et al.: Magnesium oxide/water chemical heat pump to enhance energy utilization of a cogeneration system. Energy 30(11–12), 2144–2155 (2005)
Zamengo, M., et al.: Composite block of magnesium hydroxide—expanded graphite for chemical heat storage and heat pump. Appl. Therm. Eng. 69(1–2), 29–38 (2014)
Zamengo, M., et al.: Magnesium hydroxide—expanded graphite composite pellets for a packed bed reactor chemical heat pump. Appl. Therm. Eng. 61(2), 853–858 (2013)
Zamengo, M., et al.: Thermochemical performance of magnesium hydroxide–expanded graphite pellets for chemical heat pump. Appl. Therm. Eng. 64(1–2), 339–347 (2014)
Kim, S.T., et al.: Optimization of magnesium hydroxide composite material mixed with expanded graphite and calcium chloride for chemical heat pumps. Appl. Therm. Eng. 50(1), 485–490 (2013)
Ishitobi, H., et al.: Dehydration and hydration behavior of metal-salt-modified materials for chemical heat pumps. Appl. Therm. Eng. 50(2), 1639–1644 (2013)
Myagmarjav, O., et al.: Dehydration kinetic study of a chemical heat storage material with lithium bromide for a magnesium oxide/water chemical heat pump. Prog. Nucl. Energy 82, 153–158 (2015)
Mastronardo, E., et al.: Efficiency improvement of heat storage materials for MgO/H2O/Mg(OH)2 chemical heat pumps. Appl. Energy 162, 31–39 (2016)
Mastronardo, E., et al.: Thermochemical storage of middle temperature wasted heat by functionalize d C/Mg(OH)2 hybrid materials. Energies 10(1), 70 (2017)
Linder, M., et al.: Thermochemical energy storage in kw-scale based on CaO/Ca(OH)2. Energy Procedia 49, 888–897 (2014)
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Wang, Y., Chen, Z. (2020). A Simulation Study on the Hydration of Magnesium-Based Thermochemical Heat Storage System for Residential Buildings. In: Wang, Z., Zhu, Y., Wang, F., Wang, P., Shen, C., Liu, J. (eds) Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019). ISHVAC 2019. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-9528-4_154
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DOI: https://doi.org/10.1007/978-981-13-9528-4_154
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