| The energy problem is a great challenge human face, and the rational and efficient use of geothermal resources is an effective method to solve. The geothermal heat pump system is an important form to use geothermal resources in both china and abroad. But the present control system consumes high energy, and how to reduce its energy consumption is the key to improve it' s efficiency.The existing control system cannot conduct real-time control according to the load, and its control precision is also low, and these lead to its high-energy consumption. This thesis combines theoretical derivation with actual detection data; sets out an automatic control system based on conversion technique, and the system can accurate control the temperature, the flow rate of geothermal heating and air condition system. By adopting improved computer numeral PID control algorithm, the control precision is further improved. The monitoring configuration software with formidable function to combine digital simulation and computer-aided design of the control system is used to realize the system's real time and remote monitoring. Simulated analysis proofs the feasibility of the system design. And results show that with the application of conversion technique in the geothermal heat pump air conditioning system, the electricity saving rate will reach over 40%.The research results of this thesis have an important guiding meaning to the technological innovation application and spread of geothermal heat pump.
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