On last introduction to industry knowledge, the differences between air-cooled chillers and water-cooled chillers have been introduced. This is the second content.
Third, in terms of refrigeration technology
Because the heat exchange efficiency of water is far greater than that of air, the energy efficiency of water-cooled chillers is 300 to 500 kcal/h higher than that of air-cooled chillers.
Fourth, in terms of power consumption
The overall power consumption of water-cooled chillers (including the power consumption of cooling water pumps and cooling tower fans) is about 25% lower than that of air-cooled chillers.
Because the heat transfer temperature difference of the condenser of the water-cooled chiller is generally 4 ℃ -8 ℃, while the heat transfer temperature difference of the air-cooled chiller is generally 8 ℃ -15 ℃. Under the same outdoor ambient temperature, the water temperature of the cooling circulating water is lower than that of the outdoor air. Therefore, the condensation temperature of the air-cooled unit in normal operation is much higher than that of the water-cooled unit, so that the power consumption of the air-cooled unit is greater than that of the water-cooled unit under the same refrigerating capacity.
Fifth, in terms of heat dissipation
The air-cooled chiller relies on the electric fan on the top to dissipate heat, which has certain requirements for the environment: for example, ventilation, humidity, temperature cannot be higher than 40 ° C, air pH value, etc., while the water-cooled chiller needs to use the umbrella water of the water tower to dissipate heat.
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