Energetic, exergetic and enviro-economic analysis of parallel pass jet plate solar air heater with artificial roughness

摘要

In this work, the thermal performance of single-pass double-duct jet plate solar air heater with various designs of artificial roughness is analyzed by developing a mathematical model. The influence of artificial roughness designs on the performance of the solar air heater is analyzed based on energy and exergy basis, and the results are compared with single-pass single-duct jet plate solar air heater. Further, year-around enviro-economic analysis is carried out for artificial roughness design providing the better performance. The results show that single-pass double-duct jet plate solar air heater with arc-shaped rib roughness produces highest energetic and exergetic efficiency. The results are compared with single-pass single-duct jet plate solar air heater in the form of energetic and exergetic efficiency enhancement ratios, annual overall energy and exergy gain and amount of carbon credit earned. The mathematical model has been validated with analytical and experimental results available in the literature with acceptable deviation. On the basis of numerical calculations, it has been concluded that single-pass double-duct jet plate solar air heater improves annual usual energy and exergy gain by 111.7% and 185.6%, respectively. Further, it reduces 2.11 times of production of CO2 mitigation per year and enhances the revenue of annual carbon credit by 2.85 times.