With the rapid development of science and technology, the improvement of industrial and agricultural production levels, and the improvement of people's cultural life, the application of air conditioning in China has become increasingly widespread. Air conditioning consumes more and more energy. How to save energy in the operation, operation and management of air conditioning systems. It is a major issue facing the people engaged in this work. In order to save energy in the operation of the air conditioning chiller, the operator should understand the working principle of the unit and the entire air conditioning system and the operating procedures to adapt to the characteristics of the unit. Strictly operate according to the operating instructions of the refrigeration unit to ensure the safe operation of the unit. Tr To do energy saving in air conditioning. First of all, it is necessary to correct various misoperations. The common practice of misoperation is the operation of the chilled water system, the cooling water system, and the cooling tower system. The following air-cooled industrial cold water Machine manufacturers explain the four aspects of energy saving in the operation and management of chillers:
Operation of chilled water system
"The chiller for air conditioning is generally operated under the conditions of the cold water return water temperature of 12 ° C, the water supply temperature of 7 ° C and the temperature difference of 5 ° C as specified in the standard working conditions. For the same chiller, the operating conditions remain unchanged. When the external load is constant, the cooling capacity of the chiller is constant. At this time, the cold water flow through the evaporator is inversely proportional to the temperature difference between the supply and return water, that is, the larger the cold water flow, the smaller the temperature difference; otherwise, the smaller the flow rate, The greater the temperature difference, the industrial chiller group conditions stipulate that the cold water supply and return water temperature difference is 5 °C, which actually The cold water flow rate of the unit is specified. The control of the cold water flow rate is controlled by the pressure drop of the control water passing through the evaporator under standard working conditions, and the pressure drop of the cold water supply and return water on the evaporator is set to 49 kPa (0.5 kg/cm). ).
In the actual operation of the chilled water system, there are often several misoperations:
(1) When booting. The inlet and outlet valves on the evaporator of the non-starting group are not closed first, causing a part of the cold water to flow away from the evaporator of the unit that does not open, which affects the cooling effect of the unit under working conditions.
(2) Some air conditioner main room operators do not strictly adjust the chilled water inlet and outlet pressure drop when the machine is turned on. It is often adjusted above the operating parameters when the pressure drops too high. It is not a small cold water pump outlet valve. Instead, take the other valve that does not run the unit evaporator inlet and outlet valves. Excessive water is removed from the evaporator of another unit. In order to reduce the pressure drop, the artificial electric current of the cold water pump is artificially increased, resulting in waste of electricity.
(3) After the last misoperation occurred. The pressure drop of the inlet and outlet of the A machine evaporator will definitely decrease. Some operators do not close the inlet valve of the B evaporator, and increase the pressure drop of the inlet and outlet of the evaporator of the A machine. It is wrong to add the wrong, take the method of adding a cold water pump to solve the problem of increasing the water pump, although the pressure drop of the inlet and outlet of the evaporator of the A machine is increased. However, it is completely unnecessary to open the cold water pump. This is equivalent to the fact that two cold water pumps work on two evaporators, which is pure waste.

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