Numerically study on a new hybrid photovoltaic thermal (PVT) collectors with natural circulation
| Autor: | Jianyu Guo, Lixian Zheng |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Energy loss
Materials science Renewable Energy Sustainability and the Environment business.industry 020209 energy Photovoltaic system 02 engineering and technology Solar energy Engineering physics law.invention Natural circulation law Power electronics Solar cell Thermal 0202 electrical engineering electronic engineering information engineering Electricity business |
| Zdroj: | Applied Solar Energy. 53:316-321 |
| ISSN: | 1934-9424 0003-701X |
| Popis: | Traditional design of Hybrid photovoltaic thermal (PV/T) system has the solar cells fixed on the top of the absorber. A new PV/T system in which the solar cells are pasted on the bottom of the glass cover is suggested with the aim of realizing higher electricity output considering the lower temperature of glass cover compared with that of absorber. A numerical analysis model is set up to compare the performances of the traditional PV/T and the new PV/T in this study. It is found that compared to the traditional PV/T, the new PV/T shows higher daily electric efficiency. But this superiority is not as apparent as expected. The key point to increase the daily electric efficiency of a PV/T lies in increasing the solar energy transfer efficiency of the solar cell. The total energy gain of the new PV/T is about 7% lower than that of the traditional PV/T because of smaller mass rate and more energy loss from glass cover with higher temperature. |
| Databáze: | OpenAIRE |
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