Study On The Application Of Pluripotent Complementary Heating Supply System In Shigatse

Tibet Autonomous Region is in a high-speed development period of history, infrastructure is constantly improving along with the country's efforts to support increased. Due to the long-time of heating season, huge demand for heating and relatively backward heating mode,the improvement of heating facilities is an important part of infrastructure construction in Tibet. Currently, research on the forms of heating systems and the actual operating results is rare. Therefore, through combining the methods of detection and simulation, the purpose of this article is to investigate the operating performance of pluripotent complementary heating supply system in Tibet based on the Shigatse Airport project, and provide a reference for the design and optimization of subsequent heating projects.Firstly, heat resources in TAR have been introduced. Take energy saving, environmental protection and the access to obtain into consideration, the most optimized form of heat resource is the comprehensive utilization of solar energy and geothermal energy.Secondly, the heating status of solar energy combined with underground water source heat pump system in Shigatse Airport has been introduced. According to the climate conditions, this paper simulates load characteristics of different constructions by DeST. Then, the indoor natural temperature and heat load have been analyzed to learn the thermal performance of different constructions in Tibet.Thirdly, based on the analysis of the design of heating systems in Shigatse Airport,which mainly includes the design of solar collector, heat storage tank, water source heat pump, terminal equipment and the operation strategy, field testing for pluripotent complementary heating supply system has been performed. Through this short-term test, the variation of actual collector effect, actual heating effect and heating parameters can be obtained. Meanwhile, some existing problems of this heating system also can be found.In addition, on the basis of design conditions and field testing data, this article selects appropriate TRNSYS components depending on the characteristics of devices. Then, considering the logical links and control relationship between those components to connect each other in sequence, the TRNSYS model of pluripotent complementary heating supply system can be established, whose correctness has been validated by the measured data.Finally, this article uses the TRNSYS model to simulate system running and obtain those parameters of typical day, typical month and heating season, such as solar collector inlet and outlet temperature, heat storage tank inlet and outlet temperature, effective collecting heat, solar fraction, collector efficiency, heat supply, power consumption and running time of each mode. Then, make a comprehensive analysis about the variation of actual collector effect, actual heating effect and heating parameters. Under the premise of ensuring indoor heating temperature, setting effective collecting heat, collection efficiency, solar fraction, heat supply and power consumption as indexes, simulate the TRNSYS model with different system components to optimize the system configuration and provide a reference for the application of pluripotent complementary heating supply system in Tibet.