The operation way of the experimental system was obtained by according to simulating the sensible heat storage of solar energy.The way to solving problem existing was pointed out when SAGSHPs have no heat storage of PCM.The application of heat storage of PCM in SAGSHPs was introduced and the procedure of heat storage of the heat storage body was simulated.The conclusion is that the time of phase change is in touch with the radius of the heat storage body,so it can be controlled later.More farther from outside,more lower the temperature difference of the point is.Because the temperature of the point outside of PCM is lower than fluent,this can produce heat flow within 8 hours,these can postpones the velocity of the temperature elevating.