Cutting-edge technology! Publisher of the efficiency limit of next-generation solar thermal and photovoltaic hybrid technology
Solar energy is one of the most abundant renewable energy sources. Effective solar energy technology has huge potential to alleviate the challenges of growing global energy demand while reducing related emissions. Solar energy can meet the electrical and thermal energy needs of various end users through photovoltaic (PV) and solar (ST) technologies, respectively. Recently, a hybrid photovoltaic-thermal (PVT) concept has been proposed, which synergistically combines the advantages of PV and ST technologies, and can simultaneously generate electricity and useful heat from the same area and components.
The solar spectrum is separated by a filter, and only a part of the spectrum is sent to the PV cell for power generation. The rest of the spectrum that cannot be used by solar cells is directed to a heat sink to generate thermal energy.
Spectral splitting is an emerging method of designing high-performance PVT solar collectors. The technology uses advanced designs with optical filters that direct different parts of the solar spectrum to PV cells for power generation or to heat sinks. To generate heat. Nevertheless, depending on the application and end-user needs, the ultimate efficiency limits of the spectrophotometric PVT (SSPVT) collectors, and the best collector design that allows us to reach these limits, as well as the materials for PV cells and optical filters, are still not available. clear. The lack of consensus in this field has prompted people to further study these aspects of SSPVT technology.
Recently, Christos N. Markides and Gan Huang of Imperial College London, UK, collaborated with Kai Kai from Zhejiang University in China to publish a paper in "Optical Science and Application". The paper describes a comprehensive framework for predicting the performance of this type of collector, which can be used to determine its efficiency limit; and to select the best PV material and the best spectral separation that can provide a combination of thermoelectric performance close to the technical efficiency limit Filter, provide detailed guidance.
The paper said: We found that the relative value of heat energy and electricity has a significant impact on the total effective efficiency limit of the SSPVT collector, the best PV cell material and the best spectroscopic filter.
CIGS solar cells (a new energy material) are considered particularly suitable for SSPVT collector applications due to their adjustable band gap energy. The optimal upper and lower limits of the spectral separation filter depend to a large extent on the PV material.
The detailed steps in our research can help designers choose suitable solar cell materials and spectroscopic filters according to conditions and applications, so as to achieve the best overall performance, while taking into account the energy vector (electrical and thermal) systems generated by them .
PVT SOLAR COLLECTOR
anti-rust materials
highest usage of sun energy
easy for installation
