Modelling and optimising of the heating performance of solar assisted GWSHPS in Tibetan Plateau Airport
Tibetan Plateau in China is characterised by the shortage of conventional energy resources,fragile ecosystem and the need of space heating,which has made the renewable energy progressively more important than other parts.Therefore,solar and geothermal energy are the optimal alternatives to fossil fuels in Tibetan Plateau because of their abundance and sustainability.Solar assisted groundwater source heat pump system(GWSHPS)is an energy efficient system that could be a promising alternative to stove,boiler and electric heater for spacing heating.The system can avoid the intermittence of solar energy system and limitation of groundwater source heat pump system.In this paper,parametric optimisation was carried out in order to select the optimum size of the system based on the combination of efficiency and initial cost.Firstly,a detailed numerical model of solar assisted GWSHPS for a civil airport in Tibetan autonomous prefecture of Aba was developed in TRNSYS with typical meteorological year data.The result of numerical model corresponds well to the experimental data,with error less than 15%.Then,the total energy consumption,useful heat gain and economy of system were discussed for different combinations among water tank,solar collector,and supply hot water temperature.Finally,considering the balance between economy and performance of GWSHPS,the optimum sizing for water tank,collector,and supply hot water temperature are 80L/solar collector area,55°,1130m2,and 40℃,respectively.These results may provide guidance for the design of solar assisted GWSHPS in airport building in cold plateau climate.
Cold Plateau climate solar assisted GWSHP solar collector water tank supply hot water temperature
Jun LU Meilin WANG Yongcai LI Lulu YANG Liyue ZENG Zhenyong QIAO
Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment,Ministry of Education,Chongqin Chongqing University,Chongqing;Sichuan Institute of Building Research,Chengdu
国际会议
武汉
英文
253-263
2018-08-21（万方平台首次上网日期，不代表论文的发表时间）