Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System
With the rapid development of industrialization, the excessive use of fossil fuels has caused problems such as increased greenhouse gas emissions and energy shortages. The development and use of renewable energy has attracted increased attention. In recent years, solar heat pump heating technology t...
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MDPI AG
2021-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/19/5552 |
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| author | Chuanhui Zhu Shubin Yan Xiaodong Dong Wei Zhang Biyi Huang Yang Cui |
| author_facet | Chuanhui Zhu Shubin Yan Xiaodong Dong Wei Zhang Biyi Huang Yang Cui |
| author_sort | Chuanhui Zhu |
| collection | DOAJ |
| description | With the rapid development of industrialization, the excessive use of fossil fuels has caused problems such as increased greenhouse gas emissions and energy shortages. The development and use of renewable energy has attracted increased attention. In recent years, solar heat pump heating technology that uses clean solar energy combined with high-efficiency heat pump units is the development direction of clean heating in winter in northern regions. However, the use of solar energy is intermittent and unstable. The low-valley electricity policy is a night-time electricity price policy. Heat pump heating has problems such as frosting and low efficiencies in cold northern regions. To solve these problems, an exergy analysis model of each component of a phase-change heat-storage coupled solar heat pump heating system was established. Exergy analysis was performed on each component of the system to determine the direction of optimization and improvement of the phase-change heat-storage coupled solar heat pump heating system. The results showed that optimizing the heating-end heat exchanger of the system can reduce the exergy loss of the system. When the phase-change heat-storage tank meets the heating demand, its volume should be reduced to lower the exergy loss of the tank heat dissipation. Air-type solar collectors can increase the income exergies of solar collectors. |
| first_indexed | 2024-03-10T06:56:45Z |
| format | Article |
| id | doaj.art-2fe36ce9ee6c49eb8c37a67a7ec599d2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:56:45Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2fe36ce9ee6c49eb8c37a67a7ec599d22023-11-22T16:23:32ZengMDPI AGMaterials1996-19442021-09-011419555210.3390/ma14195552Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating SystemChuanhui Zhu0Shubin Yan1Xiaodong Dong2Wei Zhang3Biyi Huang4Yang Cui5The College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaThe College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaTibet Autonomous Region Energy Research Demonstration Center, Lhasa 850000, ChinaThe College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaThe College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaThe College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaWith the rapid development of industrialization, the excessive use of fossil fuels has caused problems such as increased greenhouse gas emissions and energy shortages. The development and use of renewable energy has attracted increased attention. In recent years, solar heat pump heating technology that uses clean solar energy combined with high-efficiency heat pump units is the development direction of clean heating in winter in northern regions. However, the use of solar energy is intermittent and unstable. The low-valley electricity policy is a night-time electricity price policy. Heat pump heating has problems such as frosting and low efficiencies in cold northern regions. To solve these problems, an exergy analysis model of each component of a phase-change heat-storage coupled solar heat pump heating system was established. Exergy analysis was performed on each component of the system to determine the direction of optimization and improvement of the phase-change heat-storage coupled solar heat pump heating system. The results showed that optimizing the heating-end heat exchanger of the system can reduce the exergy loss of the system. When the phase-change heat-storage tank meets the heating demand, its volume should be reduced to lower the exergy loss of the tank heat dissipation. Air-type solar collectors can increase the income exergies of solar collectors.https://www.mdpi.com/1996-1944/14/19/5552phase-change heat-storage tanksolar collectorheat pumpheatingexergy analysis |
| spellingShingle | Chuanhui Zhu Shubin Yan Xiaodong Dong Wei Zhang Biyi Huang Yang Cui Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System Materials phase-change heat-storage tank solar collector heat pump heating exergy analysis |
| title | Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System |
| title_full | Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System |
| title_fullStr | Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System |
| title_full_unstemmed | Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System |
| title_short | Exergy Analysis of Phase-Change Heat-Storage Coupled Solar Heat Pump Heating System |
| title_sort | exergy analysis of phase change heat storage coupled solar heat pump heating system |
| topic | phase-change heat-storage tank solar collector heat pump heating exergy analysis |
| url | https://www.mdpi.com/1996-1944/14/19/5552 |
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