摘要
A significant demand for building heating exists in the Tibetan area of Western Sichuan. However, there is no enough meteorological data and appropriate optimization method used for designing and operating local building heating systems. This study puts forward a building heating climate zoning method to divide the Tibetan area of Western Sichuan into four building heating climate zones. Combined with the local renewable energy resources, an optimization model that can be used to simultaneously optimize system configuration, equipment capacity, and operating parameters for a multi-source complementary heating system based on air source heat pump (MSCHS-ASHP) is proposed. Life cycle cost (LCC), seasonal coefficient of performance (SCOP), CO2 emission equivalent in operation cycle, and cumulative power consumption the during heating season (Wele) are selected as indices to evaluate the performance of MSCHS-ASHP and coal-fired boiler heating system (CBHS), which is optimized for comparison. Results show that compared to CBHS, the LCC of optimal MSCHS-ASHP can be reduced by up to 26.8%, while the SCOP can be increased by up to 398.8%. Zero CO2 emissions can be achieved during operation of MSCHS-ASHP as well. The Wele of optimal MSCHS-ASHP can reach a minimum value of 1.75 kWh/(m2·a)."