The Study on the Optimal Operation of Groundwater Heat Pumps

摘要

Under conditions of reliable operation,satisfied cooling load or heating load supply of a system,with the computer program,optimize the operating parameters of the water water heat pump system; achieve the goal of real-time maximum value of the COP of the system;present a designing tool for application of groundwater heat pumps Method Set the real-time maximum value of COP of the system as objective function (COP=Q/(Pcom+Pe+Pc) ,Q:Heating load or cooling load,Pcom:the input power of the compressor,Pc:the input power of the water pump for the evaporator,Pc: the input power of the water pump for the condenser); establish the compressor mathematic model,the condenser mathematic model,the electronic expansion valve mathematic model,the evaporator model,and the models of the water pumps for the condenser and the evaporator; solve the restricted multivariable nonlinear function of the model; make a simulation software with Visual C++6.0 plateform.For the load in different season in a year,and for the entire operation of the integration system (including 6 subsystems),the system automatically changes the operating parameters and thus keeps the system energy consumption the minimum.Result When COP of the integration system is at the real-time maximum value,present the optimization operating parameters of the system.Conclusion The system can save more energy if it runs under the optimized conditions.The simulation model lays the foundation for the computer on-line optimal control the heat pump system running.