制冷剂自然循环系统制冷工况的性能研究

以网络、图论为基础,建立了基于气液两相流体网络的制冷剂自然循环系统的数学模型,采用关联矩阵来描述各个部件之间的关联关系,通过对模型的求解,得出了冷凝器进口水温、冷却水流量、室内空气温度等参数对系统制冷量的影响规律。研究表明,当蒸发温度和冷却水流量不变时,随着冷凝器进口水温的降低,蒸发器的制冷量不断增大;当室内换热器风量和室内温度不变时,蒸发器的制冷量随蒸发温度的升高而减小。

Study on Refrigerant Natural Circulation System Performance in Refrigeration Condition

According to the network and graph theory, the mathematical model based on the refrigerant natural circulating system of gas and liquid phase was built, which used incidence matrix to describe the relationship of every part. Through analysis and computation of the model, results exhibited 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 experiment demonstrates that the water temperature at the inlet of condenser will incline, however, the refrigeration quantity of evaporator will constantly increase, if the evaporation temperature and the flow rates of cooling water are invariable; when the air volume of indoor heat transfer and the indoor temperature keep stable, the evaporator refrigeration quantity will elevate along with the inclination of vaporization temperature.