Performance and Economic Analysis of the Multi-Energy Complementary Heating System under Different Control Strategies in Cold Regions

Multi-energy complementary heating (MECH) is the most promising and potential technology of future. However, owing to increase in energy types, system complex, operation procedure cumbersome. In addition, due uncertainty climate conditions, it difficult develop a general control strategy suitable for all systems. order study optimal MECH systems with solar, biomass, electric as three heat sources cold regions, was tested over different periods during entire season rural residential buildings operating performance evaluated. The experiment, based on strategy, compared other systems, economic environmental benefits were further results showed that, room temperature (RS-CON), storage tank (HST-CON) sufficient solar (SE) can afford higher fraction by 10%, more HST hours, lower costs CO2 emissions. During operation, Mode 3 [biomass boiler (BB) + (HST) heating] best mode. At end period, 5 (HST heating) met indoor demand had significant energy-saving effect. From perspective whole season, HST-CON generate consumption achieve almost zero This great significance because provides an engineering reference rational utilization regions.