Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes
Photovoltaic (PV) glazing is widely used in the building sector for its power generation advantages. However, its low transmittance reduces solar heat gain, limiting energy-saving effectiveness in heating regions. To address this, the present study proposes a novel PV energy-saving window that reduc...
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MDPI AG
2025-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/2/238 |
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| author | Jiayi Li Jianmei Wu Hongpeng Xu |
| author_facet | Jiayi Li Jianmei Wu Hongpeng Xu |
| author_sort | Jiayi Li |
| collection | DOAJ |
| description | Photovoltaic (PV) glazing is widely used in the building sector for its power generation advantages. However, its low transmittance reduces solar heat gain, limiting energy-saving effectiveness in heating regions. To address this, the present study proposes a novel PV energy-saving window that reduces heating load by separately controlling its components—PV glazing, insulated shutter, and clear glazing—through three control modes: Mode 1 controls insulated shutter, Mode 2 controls insulated shutter and PV glazing, and Mode 3 controls insulated shutter and clear glazing. First, the energy-saving benefits of the window were confirmed through in situ testing. Next, using a validated model, the correlation between key factors and heating load was analyzed under the above three modes. Finally, the impact of configurations on heating load under the three control modes was clarified. The main findings are as follows: (1) When PV glazing is controlled, clear glazing layers become the primary factor influencing the heating load. (2) In Modes 1 and 3, the configurations have a greater impact on heating load, reducing it by 34.62% and 39.60%, respectively, while Mode 2 shows a reduction of 17.93%. (3) Mode 2 is the optimal control mode, confirming the effectiveness of controlling PV glazing to reduce heating load. |
| format | Article |
| id | doaj-art-f57bc11d04f749d78eb6c33abc502649 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-f57bc11d04f749d78eb6c33abc5026492025-01-24T13:26:18ZengMDPI AGBuildings2075-53092025-01-0115223810.3390/buildings15020238Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control ModesJiayi Li0Jianmei Wu1Hongpeng Xu2Ministry of Industry and Information Technology Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Harbin 150001, ChinaMinistry of Industry and Information Technology Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Harbin 150001, ChinaMinistry of Industry and Information Technology Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Harbin 150001, ChinaPhotovoltaic (PV) glazing is widely used in the building sector for its power generation advantages. However, its low transmittance reduces solar heat gain, limiting energy-saving effectiveness in heating regions. To address this, the present study proposes a novel PV energy-saving window that reduces heating load by separately controlling its components—PV glazing, insulated shutter, and clear glazing—through three control modes: Mode 1 controls insulated shutter, Mode 2 controls insulated shutter and PV glazing, and Mode 3 controls insulated shutter and clear glazing. First, the energy-saving benefits of the window were confirmed through in situ testing. Next, using a validated model, the correlation between key factors and heating load was analyzed under the above three modes. Finally, the impact of configurations on heating load under the three control modes was clarified. The main findings are as follows: (1) When PV glazing is controlled, clear glazing layers become the primary factor influencing the heating load. (2) In Modes 1 and 3, the configurations have a greater impact on heating load, reducing it by 34.62% and 39.60%, respectively, while Mode 2 shows a reduction of 17.93%. (3) Mode 2 is the optimal control mode, confirming the effectiveness of controlling PV glazing to reduce heating load.https://www.mdpi.com/2075-5309/15/2/238photovoltaic energy-saving windowheating loadcontrol modecorrelation analysis |
| spellingShingle | Jiayi Li Jianmei Wu Hongpeng Xu Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes Buildings photovoltaic energy-saving window heating load control mode correlation analysis |
| title | Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes |
| title_full | Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes |
| title_fullStr | Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes |
| title_full_unstemmed | Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes |
| title_short | Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes |
| title_sort | effect of photovoltaic energy saving window factors on building heating load under three control modes |
| topic | photovoltaic energy-saving window heating load control mode correlation analysis |
| url | https://www.mdpi.com/2075-5309/15/2/238 |
| work_keys_str_mv | AT jiayili effectofphotovoltaicenergysavingwindowfactorsonbuildingheatingloadunderthreecontrolmodes AT jianmeiwu effectofphotovoltaicenergysavingwindowfactorsonbuildingheatingloadunderthreecontrolmodes AT hongpengxu effectofphotovoltaicenergysavingwindowfactorsonbuildingheatingloadunderthreecontrolmodes |