Analysis On Influence Factors Of Water Source Heat Pump And Recharge System In The Northern Suburb Of Xi’an

The using scope of water source heat pump air conditioning system in our country ismore and more widely. The economic benefits and environmental benefits which areproduced by heat pump system are extremely obvious, but there are lots of factors to haveeffects on setting up and running of the heat pump system, these factors cause impacts atdifferent levels in the economical and environmental aspects and a direct influence on theapplication and promotion of water source heat pump system.With pumping-injection testand consulting literatures, the article analyzed the influence factors of water source heat pumpsystem. The main results are as follows:1. With three different methods, we calculated the permeability coefficient of the northpart of Xi’an:52.37～68.4m/d. When inject the wells,because of the physical and chemicalblock function, the permeability coefficient decreased with time, we get the regressionequation by fitting the data:K=1.565e0.0013t+7.166。2.When the wells’ spacing are the same, the drawdown with different amount is less thanthat with same inject amount; When the wells’ spacing are different, the drawdown withdifferent amount is the same with that with same inject amount,this type of decorating wellshave no influence on the pumping wells.3. When the quantity of water recharge is more than marginal value, the curve of waterlevel changes over time turns out to be curves with inflection point, this kind of curve willappear a inflection point at the time of sixty minutes, water level increases rapidly before thepoint and tends to be stable after the point; When the quantity of water recharge is less thanmarginal value, the curve of water level changes over time turns out to be curves like theletter”L”. from the pumping-injection test, we can know than the marginal value of3#wellis between30m3/h and40m3/h, the marginal value of5#well and6#well is between30m3/hand40m3/h.4.We get the weights of evaluation indexes which have influence on the application andpromotion of water source heat pump system with AHP, The results show that the weightspermeability is the biggest and the weights of ground fissures is the smallest;the articleevaluates the suitalility of setting up WSHP in the north part of Xi’an, the result is that it belongs to the area of more suitable.