Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating
Phase change heat storage material is a preferred material in solar building heating or off-peak electric-heat storage heating technology and is the research focus. A compact phase change thermal storage device has been designed and experimentally studied for improving heating system load in this wo...
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MDPI AG
2021-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/21/7108 |
| _version_ | 1827678151115800576 |
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| author | Yang Li Caixia Wang Jun Zong Jien Ma Youtong Fang |
| author_facet | Yang Li Caixia Wang Jun Zong Jien Ma Youtong Fang |
| author_sort | Yang Li |
| collection | DOAJ |
| description | Phase change heat storage material is a preferred material in solar building heating or off-peak electric-heat storage heating technology and is the research focus. A compact phase change thermal storage device has been designed and experimentally studied for improving heating system load in this work. A new type, magnesium nitrate hexahydrate-based phase change material has been studied to improve the cooling degree and crystallization difficulty. The focus of this study is on the heat charging and discharging characteristics of this new phase change material. The heat storage device has two groups of coils, the inner side which carries water and the outer side which is the phase change material. A testing system was built up to value the thermal cycling performance of the heat storage device. The measurement data include phase change material temperature field, water inlet and water outlet mean temperature, heat charging and heat discharging depth, and flow rates over the operating period. The results show the phase change material has a quick response with the operating temperature range of 20–99 °C. Its latent heat is 151.3 J/g at 91.8 °C. The heat storage density of this phase change material is about 420 MJ/m<sup>3</sup>. The thermal performance degradation is about 1.8% after 800 operation cycles. The phase change thermal storage device shows flexibility and a great potential to improve the capacity and economy of heating systems. |
| first_indexed | 2024-03-10T06:03:23Z |
| format | Article |
| id | doaj.art-26d22a43af144f9496234c59b42be4da |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T06:03:23Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
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| series | Energies |
| spelling | doaj.art-26d22a43af144f9496234c59b42be4da2023-11-22T20:43:37ZengMDPI AGEnergies1996-10732021-11-011421710810.3390/en14217108Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building HeatingYang Li0Caixia Wang1Jun Zong2Jien Ma3Youtong Fang4Department of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaNew Energy Technology Research Institute, State Power Investment Corporation Research Institute, Beijing 102209, ChinaNew Energy Technology Research Institute, State Power Investment Corporation Research Institute, Beijing 102209, ChinaDepartment of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaDepartment of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaPhase change heat storage material is a preferred material in solar building heating or off-peak electric-heat storage heating technology and is the research focus. A compact phase change thermal storage device has been designed and experimentally studied for improving heating system load in this work. A new type, magnesium nitrate hexahydrate-based phase change material has been studied to improve the cooling degree and crystallization difficulty. The focus of this study is on the heat charging and discharging characteristics of this new phase change material. The heat storage device has two groups of coils, the inner side which carries water and the outer side which is the phase change material. A testing system was built up to value the thermal cycling performance of the heat storage device. The measurement data include phase change material temperature field, water inlet and water outlet mean temperature, heat charging and heat discharging depth, and flow rates over the operating period. The results show the phase change material has a quick response with the operating temperature range of 20–99 °C. Its latent heat is 151.3 J/g at 91.8 °C. The heat storage density of this phase change material is about 420 MJ/m<sup>3</sup>. The thermal performance degradation is about 1.8% after 800 operation cycles. The phase change thermal storage device shows flexibility and a great potential to improve the capacity and economy of heating systems.https://www.mdpi.com/1996-1073/14/21/7108heat storage performancephase change materialheat storagebuilding heatingmagnesium nitrate hexahydrate |
| spellingShingle | Yang Li Caixia Wang Jun Zong Jien Ma Youtong Fang Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating Energies heat storage performance phase change material heat storage building heating magnesium nitrate hexahydrate |
| title | Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating |
| title_full | Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating |
| title_fullStr | Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating |
| title_full_unstemmed | Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating |
| title_short | Experimental Research of the Heat Storage Performance of a Magnesium Nitrate Hexahydrate-Based Phase Change Material for Building Heating |
| title_sort | experimental research of the heat storage performance of a magnesium nitrate hexahydrate based phase change material for building heating |
| topic | heat storage performance phase change material heat storage building heating magnesium nitrate hexahydrate |
| url | https://www.mdpi.com/1996-1073/14/21/7108 |
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