Experimental and simulation study on the performance of corrugated plate enhanced solar chimney power plant combined with distillation system

To improve the output performance of the solar chimney power plant combined with distillation system, the corrugated plate-assisted enhancement technology was applied in the solar still of the integrated system to build a comparative test platform. By comparing with the standard integrated system, the change rules of the system's operating characteristics and output parameters under two operating conditions are explored. The heat transfer and flow mathematical model of the enhanced integrated system is also established to realize the theoretical prediction of the operation and output characteristics of the system. It was found that the corrugated plate enhancement technology can effectively enhance the temperature and the distillation effect of the solar still within the integrated system, but does not change the spatial distribution characteristics of temperature, flow velocity, and relative static pressure in the flow field of the system. The system performance was most significantly enhanced during the period 14:00–18:00, with increases in airflow temperature rise, chimney outlet flow rate, and negative chimney pressure above 12.80 %, 2.80 %, and 4.60 %, respectively. The daily power generation and water production of the system were 679.32 kWh and 176.80 t, respectively, which increased by 5.24 % and 17.87 %. The daily solar energy utilization rate was improved from 28.81 % to 33.93 %.