Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ternary molten salt energy storage coupled with graphene oxide-TiN nanofluids for direct absorption solar collector
Highlights Ternary molten salt coupled nanofluid collector can continuously output heat. Molten salt coupled nanofluid collector can be used in high temperature field. Maximum photothermal conversion efficiency of the collector is 56.5%. Energy storage rate of the collector can reach 52.8%.
Abstract Owing to the obvious advantages of direct solar collectors, considerable research has been continuously conducted for improving the efficiency of solar energy storage. Due to the instability in the solar energy reaching the Earth and the uneven distribution of solar irradiation during the day and night, it is difficult to continuously output the heat source. In order to further improve collection system performance, we have proposed a direct absorption solar collector, which uses graphene oxide (GO) nanosheets and titanium nitride (TiN) nanoparticles mixed with heat transfer oil as the working fluids, and uses a ternary mixed molten salt (44% Ca(NO3)2, 12% NaNO3, and 44% KNO3) as the heat storage core. Moreover, this new kind of collector has been experimentally investigated, and its solar thermal performance is studied with different proportion of GO to TiN in the nanofluids. The experimental results show that the maximum thermal energy can be stored in the collector is nearly 526.96 J, and the energy retention rate can reach 51.7%. Moreover, the solar thermal efficiency of this collector is up to 56.5%. In addition, the mechanism of heat storage is also studied in detail. This study provides a practical avenue for improving the application potential solar collector, which can effectively promote the heat storage for medium temperature of the collector subjected to incident irradiation.
Ternary molten salt energy storage coupled with graphene oxide-TiN nanofluids for direct absorption solar collector
Highlights Ternary molten salt coupled nanofluid collector can continuously output heat. Molten salt coupled nanofluid collector can be used in high temperature field. Maximum photothermal conversion efficiency of the collector is 56.5%. Energy storage rate of the collector can reach 52.8%.
Abstract Owing to the obvious advantages of direct solar collectors, considerable research has been continuously conducted for improving the efficiency of solar energy storage. Due to the instability in the solar energy reaching the Earth and the uneven distribution of solar irradiation during the day and night, it is difficult to continuously output the heat source. In order to further improve collection system performance, we have proposed a direct absorption solar collector, which uses graphene oxide (GO) nanosheets and titanium nitride (TiN) nanoparticles mixed with heat transfer oil as the working fluids, and uses a ternary mixed molten salt (44% Ca(NO3)2, 12% NaNO3, and 44% KNO3) as the heat storage core. Moreover, this new kind of collector has been experimentally investigated, and its solar thermal performance is studied with different proportion of GO to TiN in the nanofluids. The experimental results show that the maximum thermal energy can be stored in the collector is nearly 526.96 J, and the energy retention rate can reach 51.7%. Moreover, the solar thermal efficiency of this collector is up to 56.5%. In addition, the mechanism of heat storage is also studied in detail. This study provides a practical avenue for improving the application potential solar collector, which can effectively promote the heat storage for medium temperature of the collector subjected to incident irradiation.
Ternary molten salt energy storage coupled with graphene oxide-TiN nanofluids for direct absorption solar collector
Zhang, Hongyun (Autor:in) / Wang, Kongxiang (Autor:in) / Yu, Wei (Autor:in) / Wang, Lingling (Autor:in) / Xie, Huaqing (Autor:in)
Energy and Buildings ; 253
15.09.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Optimization of a direct absorption solar collector with blended plasmonic nanofluids
| British Library Online Contents | 2017
Optimization of a direct absorption solar collector with blended plasmonic nanofluids
| British Library Online Contents | 2017
Optimization of a direct absorption solar collector with blended plasmonic nanofluids
| British Library Online Contents | 2017
Optimization of a direct absorption solar collector with blended plasmonic nanofluids
| British Library Online Contents | 2017
Optimization of a direct absorption solar collector with blended plasmonic nanofluids
| British Library Online Contents | 2017