Simulation Study Of Wind-induced Heat-ground Source Heat Pump System

This dissertation presents the joint operation scheme of the wind-induced heat—groundsource heat pump system according to the characteristics of abundant wind energy and heatingdispersion climatic of Inner Mongolia of the central region. Wind-induced thermal systems andground source heat pump system will be connected in series,. The system not only overcomesthe wind unstable caused by the thermal system to affect the heating performance, at the sametime, the auxiliary heating of the wind makes the ground heat exchanger of soil temperaturearound can be effectively recovery, thus ensuring the heat pump can stably operation.Firstly, useing the WAsP software simulated wind calculation of wind-induced heatsystems. According to the statistics of the local meteorological data in Hohhot, such as windspeed，wind direction statistics, local standard barometric pressure, altitude, local topographydata. Obtained the wind power density is155W/㎡by simulating, and then calculates that theheating power is71kW. Finally, obtained the wind-induced heat systems efficiency washigher than that of wind power generation efficiency by compete.Secondly, using ANSYS software simulat ground source heat pump system. Simulatedthe temperature of drilling the surrounding soil at the winter heating season, draw heat pumpsystem is run separately, at the different average quantity of heat per meter, the temperaturedistribution of the drilling surrounding soil. The system is running a month later,35W/m and40W/m average quantity of heat per meter, soil temperature was still maintained at about6℃.45W/m,50W/m and55W/m average quantity of heat per meter, the soil temperature is reducedto5℃. Is is not conducive to the heat pump continues to run.The results show that selectaverage quantity of heat per meter in the central region of Inner Mongolia among35W/m~40W/m, in order to ensure the stable operation of the heat pump system.Finally, in the last chapter simulate wind-induced heat—ground source heat pumpsystem to joint operating conditions, Compared to ground source heat pump system runningalone (single heat source system) and wind induced heat—ground source heat pump system combined runtime (dual heat source system) of heating efficiency and economy. When groundsource heat pump system running alone, the soil temperature dropped to5.2℃,When the windinduced heat—ground source heat pump system combined runtime, the soil temperature canreach to7.2℃. Because of the wind induced heat system assist, ground source heat pumpsystem can running at55W/m average quantity of heat per meter. Initial investment of the windinduced heat—ground source heat pump system is slightly larger, but long-term perspective, ithas a certain economy.The studies in this paper have proved that we propose a heating systems for heat regionwhich is not suitable for central heating systems, provide a certain amount of design data andtheoretical basis ground source for heat pump system in the central region of Inner Mongolia topromote the application.