Ground Source Heat Pump Heating Operating Mode Simulation And Experimental Study

Referred to stably, energy-saving and environment-protected, ground-source heat pump has been effective heating device in 21 century, so now workers pay extensive attention to the ground-source heat pump around world.Researching on computer simulation is very significant for the optimization design of ground-source heat pump system and device, also it can promote the modernization of product design process, and reduce the product cost and R&D period. Experimental researching of ground-source heat pump supplies date for theoretical researching.This paper proposed a mathematics model for the simulation of ground-source heat pump system based on distributed parameters, including compressor, plate-type heat exchanger, thermostatic expansion valve, water and refrigerating agent thermal condition performance and performance of state matter, and so on. With the equalization of quality, momentum and energy, the main sectors of a system model can be connected and solved. The friendly interface of simulation software was developed with Visual Basic. With the help of the software, calculated the date of ground-source heat pump system in theory, and then simulated the system. At the same time, got the date of circulating in winter by experiment, compared the date of experiment with the date of theory to verify the correctness.The influence of imports and exports press, the temperature of air, the pump frequency of refrigerated water and cold water and so on, were investigated, which can provide basis for further research. Meanwhile, the corresponding changing curves were provided.On the other side, the paper made evaluation of thermal conductivity of ground, which can provide bases for further research with the help of the experiment.