Simulation Research Of Water Source Heat Pump System And Design

Energy conservation and environmental protection are the direction of China’s economic development. Energy conservation is an important measure to improve the efficiency of energy use. Currently, large amount of cooling water discharged into the environment in the fire of running (nuclear) electric field, which cause the waste of energy and the Thermal pollution of environment. Water source heat pump as an efficient energy-saving devices, which has broad prospects for development in the recycling of Power plant cooling water heat field.In view of the status of power plant cooling water use, the use of water source heat pump heat recovery power plant cooling water was simulated in this paper, carried out to establish the steady-state distribution parameter model of Evaporator, Compressor, Condenser and Throttling device. Study the effect of water temperature, water flow rate and superheat on the Condenser, The simulation results show that if the water temperature is too high, the superheat of working fluid flowing into the condenser or out of the evaporator, the affect to the Condenser are adversely; Flow rate will also affect the heat transfer efficiency of the Condenser, heat transfer efficiency increases with the flow rate increases, when the flow rate increases to a certain value, the heat transfer efficiency is increased from a gradual slowing down to change no longer. Through the condenser model analyze the impact of the mechanism of heat transfer efficiency above:changes in operating conditions will change the phase region of the working fluid, When the two-phase region has larger proportion, the system has high efficiency, conversely, inefficient. Other factors that affect the run of heat pump operation can be simulated by the program, provided a theoretical basis to improve the operating efficiency of the unit. Calculate the properties of working fluid in the heat pump had overheated cooling zone, get some important physical parameters of fit coefficients pump working fluid. According to data obtained written calculation software. Based on experience in the design formulas on the various components of a heat pump using Visual Studio2010software to design heat pump system which was visual, became a calculation software, provide a design reference for the designers of water source heat pump.