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• The influences of the geometric parameters of the reactor on the SCPP-HPCR are investigated. • A formula is proposed to calculate the CO 2 emissions reduction of the system. • The optimal operating conditions of the SCPP-HPCR is analyzed. • 2.38 kg of CH 4 is degraded and 375.52 kg of CO 2 is reduced through the system one day. The increase of 1.09 °C in global temperature resulted in significant catastrophes because of the extreme climate. The climate change rate can be slowed down by reducing the levels of CH 4 and CO 2 in the atmosphere. The solar chimney power plant integrated with a honeycomb photocatalytic reactor (SCPP-HPCR) uses the photocatalytic technology to remove atmospheric CH 4. In addition, CO 2 emissions can be reduced from coal fired power plant due to the generating capacity of the system. In this paper, the influence of the geometric parameters of the reactor and turbine on the overall performance of the SCPP-HPCR is studied by numerical simulation. The obtained results showed that the flow resistance inside the system was mostly caused by the HPCR at low turbine speed, and primarily by the turbine at high turbine speed. Reducing the pore diameter of the reactor could improve the photocatalytic performance of the SCPP-HPCR more than increasing the turbine speed. The SCPP-HPCR having a pore diameter of 3 mm, porosity of 0.85, and constant turbine speed of 180 rpm, built in Qianyanzhou, China, could remove 2.38 kg of CH 4 and reduce 375.52 kg of CO 2 in one day. [ABSTRACT FROM AUTHOR]

• Physical models to design the PV/T air systems are presented. • Electrical and thermal models are outlined to perform the performances of PV/T air-based systems. • An experimental validation of the discussed models is assessed in terms of thermal and electrical efficiencies. Solar photovoltaic thermal (PV/T) systems have the capacity to become a key actor in the world's energy transition. The design of such systems requires the implementation and development of physical models, which can predict their thermal and electrical performances. In this paper, some of the main models for designing PV/T systems are developed. In fact, various configurations of equivalent-circuit models are presented to perform the electrical behavior of PV/T systems. Further, a Quasi-Steady Thermal Model (QSTM) is developed to forecast thermal performances. All reported models are validated based on the literature results. The efficiency analysis of developed models demonstrates that the good choice of equivalent-circuit model is substantial and varies according to the climatic changes. Limitations of certain electrical models have also been outlined and discussed. This work could be a guideline to researchers for the physical modelling of PV/T systems. [ABSTRACT FROM AUTHOR]

• The review on performance impact of different design components of PVT modules. • The electrical and thermal efficiency analysis from various researches work on PVT modules. • The performance capacity results of different PVT structures has been reviewed and presented. • Recommendations were drawn for future performance enhancement. The Photovoltaic/Thermal (PVT) technology has attracted many researchers and scholars in order to increase the level of renewable energy utilization minimizing the issues caused by climate change especially the global warming which has the main roots on the greenhouse emissions produced by nonrenewable energy utilization. A PVT module is a combination of photovoltaic (PV) technology and solar thermal (ST) technology that receives and converts solar radiation into electrical and thermal energy at the same time leaving less greenhouse emissions. Even though the PVT technology seems simple in some designs and has low utilization cost, the inadequate performance and initial costs of PVT modules can slowdown their market. Based on research work outcomes and analysis, the design components of PVT modules have a strong influence on the performance. Analyzing the performance impacts of different main components of PVT module is very important not only for researchers but also for manufacturers because it points out both weaknesses and strengths for further improvements and invention of the technology to meet the market requirements. In this paper we deeply investigated the performance of PVT modules and the performance influence of each of the main components of PVT module by making a comprehensive review, finding analysis, summarizing and presenting the outcomes. [ABSTRACT FROM AUTHOR]