Simulation And Research On The Performance Of Ground Source Heat Pump At Varing Conditions

Ground Source Heat Pump (GSHP) is widely used recently due to its merits such as effectiveness, comfortablity. In contrast to Air Source Heat Pump, the research about different parameter's influence on the performance of GSHP is poor. The problem to be solved is how to adjust these parameters (Such as the conductive coefficient of backfill material, the distance between U-tube's inlet and outlet tube, the inlet parameter of air etc.) to enhance the performance of GSHP.In this dissertation, the GSHP parts'simulation model is founded. Based on the simulation results of GSHP parts, the different parameters'influence on the GSHP parts'performance is studied. In addition, the GSHP system model is founded. Based on the GSHP system simulation result, different parameters'effect on the GSHP system performance at varing conditions is studied and analysised. Some methods to enhance the performance of GSHP and guide the experiment study and engineering appliance are given in this dissertation.The main work is as followed:1. Established the mathematical model of GSHP parts.Based on these parts's model simulation result, the run parameters'influence on the part performance is studied.2. Combine the GSHP parts'model; the GSHP system model is founded.3. Based on the simulation results of GSHP system, study different parameters'influence on the performance of GSHP at varing conditions.4. Based on the analysis of simulation results, study the possible methods to enhance the performance of GSHP system.