Heating Performance of Solar Building Integrated Wall under Natural Circulation
This paper presented a building façade combined with photothermal technology where a water circulation system, including a thermal radiation plate and a solar collector, was installed. When heated by solar radiation, the water in the system transfered part of the solar heat to the room through natur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/23/6288 |
| _version_ | 1797546335090507776 |
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| author | Xiaohang Shen Nianping Li Jiao Lu Yongga A |
| author_facet | Xiaohang Shen Nianping Li Jiao Lu Yongga A |
| author_sort | Xiaohang Shen |
| collection | DOAJ |
| description | This paper presented a building façade combined with photothermal technology where a water circulation system, including a thermal radiation plate and a solar collector, was installed. When heated by solar radiation, the water in the system transfered part of the solar heat to the room through natural circulation by buoyancy caused by density difference. During the cold season, the solar heat efficiency of the façade under natural circulation was studied through experiments and numerical simulations. The results show that the simulated values of the model established by MATLAB were in good agreement with the experimental values. Under the action of natural circulation, good solar energy utilization efficiency could be obtained by the façade. When solar irradiance was 1100 W/m<sup>2</sup>, the heat gain of the solar collector was 1672 W, of which the heat delivered to the recycled water and supplied to indoor was 1184 W, and the solar heat efficiency could reach 71%. Both the pipeline impedance and the height difference between radiation plate center and solar collector center had a great influence on temperature change of water supply in this system, whereas had little impact on thermal supply and solar heat efficiency of this system. |
| first_indexed | 2024-03-10T14:28:23Z |
| format | Article |
| id | doaj.art-a8067955750c4094b7175fa038284fb5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:28:23Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a8067955750c4094b7175fa038284fb52023-11-20T22:48:11ZengMDPI AGEnergies1996-10732020-11-011323628810.3390/en13236288Heating Performance of Solar Building Integrated Wall under Natural CirculationXiaohang Shen0Nianping Li1Jiao Lu2Yongga A3College of Civil Engineering, Hunan University, Changsha 410082, ChinaCollege of Civil Engineering, Hunan University, Changsha 410082, ChinaSchool of Civil Engineering and Mechanics, Xiangtan University, Xiangtan City 411105, ChinaCollege of Civil Engineering, Hunan University, Changsha 410082, ChinaThis paper presented a building façade combined with photothermal technology where a water circulation system, including a thermal radiation plate and a solar collector, was installed. When heated by solar radiation, the water in the system transfered part of the solar heat to the room through natural circulation by buoyancy caused by density difference. During the cold season, the solar heat efficiency of the façade under natural circulation was studied through experiments and numerical simulations. The results show that the simulated values of the model established by MATLAB were in good agreement with the experimental values. Under the action of natural circulation, good solar energy utilization efficiency could be obtained by the façade. When solar irradiance was 1100 W/m<sup>2</sup>, the heat gain of the solar collector was 1672 W, of which the heat delivered to the recycled water and supplied to indoor was 1184 W, and the solar heat efficiency could reach 71%. Both the pipeline impedance and the height difference between radiation plate center and solar collector center had a great influence on temperature change of water supply in this system, whereas had little impact on thermal supply and solar heat efficiency of this system.https://www.mdpi.com/1996-1073/13/23/6288solar building integrationwallheatingsolar heat efficiencynatural circulation loop |
| spellingShingle | Xiaohang Shen Nianping Li Jiao Lu Yongga A Heating Performance of Solar Building Integrated Wall under Natural Circulation Energies solar building integration wall heating solar heat efficiency natural circulation loop |
| title | Heating Performance of Solar Building Integrated Wall under Natural Circulation |
| title_full | Heating Performance of Solar Building Integrated Wall under Natural Circulation |
| title_fullStr | Heating Performance of Solar Building Integrated Wall under Natural Circulation |
| title_full_unstemmed | Heating Performance of Solar Building Integrated Wall under Natural Circulation |
| title_short | Heating Performance of Solar Building Integrated Wall under Natural Circulation |
| title_sort | heating performance of solar building integrated wall under natural circulation |
| topic | solar building integration wall heating solar heat efficiency natural circulation loop |
| url | https://www.mdpi.com/1996-1073/13/23/6288 |
| work_keys_str_mv | AT xiaohangshen heatingperformanceofsolarbuildingintegratedwallundernaturalcirculation AT nianpingli heatingperformanceofsolarbuildingintegratedwallundernaturalcirculation AT jiaolu heatingperformanceofsolarbuildingintegratedwallundernaturalcirculation AT yonggaa heatingperformanceofsolarbuildingintegratedwallundernaturalcirculation |