Because of the increase of the heat load, the change of the refrigeration system of the industrial chiller is the premise that the air volume and the heat exchanger of the refrigerating system of the industrial chiller are unchanged. As the instantaneous load increases, it is equivalent to the instantaneous heat source temperature.        Then, when the evaporation temperature of the industrial chiller has not changed, the heat transfer temperature difference will increase, which will lead to the increase of the instantaneous heat absorption on the evaporation side and the improvement of the superheat temperature.
     Due to the increase of the heat absorption of the hot side, it brings more load to the condensing side. The corollary of this inference is the rise of the instantaneous exhaust temperature of the compressor. On the other hand, the expansion valve feedback, superheat increases fluid volume for the spool down, due to increased evaporation temperature increase, industrial chiller system by blocking the evaporation side heat transfer temperature increase to offset the instantaneous heat load increase effect on the whole system, and then reach a new balance.        The external sign of this inference is that the increase of the evaporation side pressure can be measured.
     May be a lot of people will say that the evaporation temperature is to improve the efficiency of industrial chillers, but this is one-sided, especially in the condensation of heat transfer itself is the premise of the short board. With the increase of unit refrigerating capacity and the increase of mass flow rate, the heat transfer coefficient of the evaporator is increased, and the power consumption is increased due to the increase of mass flow rate. These two aspects of the load need to be discharged through the condensation side heat. In the industrial chiller system condensation side does not have the large amount of rich cases, often the condensing temperature will increase (industrial chiller system condensation side by increasing the temperature difference and heat sink side to achieve a greater quantity of heat), in accordance with the isobars in pressure enthalpy diagram after the increase of dry cooling system, the condensation process is bound to bring the throttle, and hindered the further increase in industrial chiller unit refrigeration amount, also reached a new equilibrium.
      In this regard, the external sign can be obtained by measuring the condensation pressure. So, in many cases, the existing system of a given design condition, evaporation temperature will increase to the industrial chiller system brings greater power consumption, to the condensation end of greater load, often The loss outweighs the gain.        Through the above analysis, it is not difficult to find, with the increase of the hot end of instantaneous load, external performance can often be seen above: Industrial Chiller exhaust temperature, condensing pressure, evaporating pressure increase and improve, because industrial chiller system of self balance to changes in the outside world that can be balanced in feedback the new condition. Of course, if the condenser design margin is likely not system in the process to achieve a new equilibrium state in the fall protection.
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