Performance analysis of a novel water/air-based CPV/T system with 2D-asymmetric compound parabolic concentrator.

• A novel CPV/T module using asymmetric compound parabolic concentrator was built. • The average total efficiency of the CPV/T system achieves 66.3%. • The concentrator tilt angle of 30° is most conducive to optimizing the performance. • The system has the best applicability in high latitude areas. Aiming at the problem that the efficiency of traditional photovoltaic thermal system is not high enough and the grade of heat energy generated is low, a novel concentrated photovoltaic-thermal system with asymmetric compound parabolic concentrator (ACPC-PV/T) integrated with facade was proposed. The system maximizes the contact area between the channel and the solar cell, which is beneficial for improving heat transfer efficiency. A comprehensive performance study was conducted on the proposed system and optimization methods were proposed. Through the experiments and simulation, the results show that the electrical efficiency of the system is 5% and 7.6% higher than that of traditional modules in summer and winter, respectively, and the thermal efficiency in summer and winter is 51% and 42%, respectively. Further research was conducted on the impact of different tilt angles of concentrators on thermoelectric performance and the global applicability of the device. The results showed that in Chengdu, a concentrator tilt angle of around 30 degrees can most effectively improve module performance. On a global scale, this module has shown good performance, even in areas with lower radiation level. [ABSTRACT FROM AUTHOR]