Study on the Refrigerant Natural Circulation System Performance in Calefaction Condition

Because of the mutual influence of the parameter between each condenser,the operation characteristic of the refrigerant natural circulating system became comparative complex. In order to analyze the operation characteristic of refrigerant natural circulating system in calefaction working circumstance, the mathematical model based on the refrigerant natural circulating system of gas and liquid phase is built.Through analyzing and computing of the model,results exhibit the influence regularity from the parameters of water temperature at the inlet of condenser,the flow rates of cooling water,the indoor temperature,etc.The simulation results indicate , when the air volume of indoor heat transfer and the indoor temperature keep stable, the heating capacity of condenser increased with the electric flow valve position increased, the degree of subcooling in the condenser decreased with the electric flow valve position increased.