Shenzhen Dongyue Water Chiller Factory teaches you to judge the five phenomena of refrigerant overcharge of chiller refrigeration system: refrigerant, also known as refrigerant, is commonly called snow in some areas in the south. It is a working substance that continuously circulates in a chiller refrigeration system and changes its state to realize refrigeration. The refrigerant absorbs the heat of the cooled medium (water or air, etc.) in the evaporator to vaporize, and the heat is transferred to the surrounding air or water in the condenser to condense.
For some users of industrial chillers, it may be necessary to charge the refrigerant halfway for some reasons (for the selection of refrigerants, please refer to "10 Requirements and Selection Principles of Chillers for Refrigerants"), but it is impossible to judge whether the refrigerant is Overfilling and overfilling can be harmful to the unit. In fact, when the refrigerant of the chiller refrigeration system is excessive, the following phenomena will generally occur:
1. If the refrigerant in the chiller refrigeration system is excessive, it will take up part of the volume in the condenser, thus reducing the heat transfer area, weakening the heat exchange, causing the condensing temperature to rise and the condensing pressure to rise.
2. The evaporating temperature of the chiller cooling system will rise, the evaporation pressure will rise, and the cooling effect of the chiller will decrease.
3. Excessive refrigerant charge will increase the suction pressure of the chiller refrigeration compressor.
4. Due to excessive refrigerant, the refrigerant liquid or incompletely evaporated droplets enter the compressor cylinder, which may cause wet compression or even liquid shock.
5, start the load heavier, the motor starts difficult, serious electric current will burn the motor.
Shenzhen Dongyue Chiller Factory reminds you once again: When the chiller refrigerant is in excess, the system pressure does not increase or increase very little during shutdown. Therefore, the refrigerant pressure cannot be used to judge whether the refrigerant is excessive.
From this point of view, overfilling the refrigerant is very harmful. When excessive refrigerant is found, excess refrigerant should be released in time. For all industrial chillers first shipped from Dongyuejin Chiller Factory, the refrigerant charge is charged in advance by relevant personnel in accordance with the relevant standards. After the user receives the chiller, it only needs to connect the power supply, import and export water pipes, etc. Can be put into use.
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