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What causes the chiller water-cooled condenser to be too hot?
The water-cooled condenser is mainly used in water-cooled chillers. Its function is to use the high-temperature refrigerant vapor condenser discharged from the compressor as a liquid refrigerant, which is an important part of the refrigeration system to release heat to the surrounding environment. The equipment is one of the four major components of the chiller. Its quality directly affects the cooling capacity and cooling efficiency.
During the working process of the water-cooled chiller refrigeration system, the temperature of the outer surface of the condenser is generally close to normal temperature. When the hand touches it, it does not feel hot. Once the surface temperature is too high, the cause should be immediately identified and measures taken to eliminate this. phenomenon.
Under normal circumstances, the cause of the rise in condenser temperature is mainly due to the problem of cooling water. There are usually four cases:
First, the cooling water inlet pipe and outlet pipe position is wrong
The normal installation position is generally low inlet pipe, high outlet pipe, and “l(fā)ow inlet and high output”. If the inlet pipe position is high, the cooling water may not be fully filled in the condenser, and the heat transfer area will become smaller. The agent vapor is not effectively condensed, causing the condenser surface temperature to rise.
Second, the water quality of the cooling water is too bad
The fouling of the inner wall of the cooling water pipe in the condenser increases the thermal resistance, affects the heat exchange between the refrigerant and the cooling water, and reduces the heat transfer effect. This type of failure often occurs in chillers that are used for long periods of time and that are not regularly cleaned. The solution is to remove scale.
Third, the amount of cooling water is insufficient, the water pressure is not enough
The water-cooled condenser is the latent heat released by the cooling water to take away the refrigerant vapor condenser. Therefore, the cooling water pressure is not enough, the flow rate does not reach the rated requirement, the heat dissipation capacity is limited, and finally the temperature of the outer surface of the condenser rises. .
Fourth, the cooling water temperature is too high, higher than the rated working temperature
The higher the temperature of the cooling water, the smaller the temperature difference of the refrigerant cooling, the smaller the heat transfer amount, the less effective cooling of the refrigerant, and the higher the surface temperature of the condenser.
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