A review on solar flat plate collectors

Every year, energy demands and global warming are increasing due to the use of conventional energy sources. Hence, the need of the hour requires power to be produced by renewable sources, such as solar power. Even though solar collectors are commonly considered for low and medium temperature applications, their efficiency is low. Various research studies have been carried out in the effort to enhance the solar collector's performance. In this paper, an attempt is made to review the various research articles on analysis and optimisation models, nanofluids' usage and the tilt angle of solar collectors. This review will be beneficial for energy planners, academicians, scientists, and policymakers, to promote solar collectors for thermal applications for cleaner production and sustainable development.