화학공학소재연구정보센터
Renewable Energy, Vol.170, 936-947, 2021
Thermal economic analysis of a double-channel solar air collector coupled with draught fan: Based on energy grade
This study aimed to establish an experimental system to strengthen the popularization of flat-plate solar air collectors. Flat-plate solar collectors have been studied for years, but economic researches based on energy grade are insufficient. Using the analogical principle of fan, the relationship between the air mass flow rate and the power consumption of a fan was built. Taking net heat production and economy as the criteria, the influence of air mass flow rate on the collector system was studied. The relative coefficient of the energy grade, which can provide a balance point between the power and the heat for the net production analysis of the system, was defined. The heat production benefits and the power consumption costs were used to evaluate the experimental system using four cities as examples. On the basis of this evaluation method, the impact of energy grade on the economics of the system was studied. (c) 2021 Elsevier Ltd. All rights reserved.