The cooling capacity of chillers directly correlates with the system's operational status. For compressors of the same structure, speed, and refrigerant type, their operational management varies and changes along with the differences in operating conditions, cooling capacity, and energy consumption.

One, With the reduction in the evaporation temperature, the compression ratio of the compressor increases, leading to a higher energy consumption per cooling unit produced. A 1°C decrease in the evaporation temperature results in a 3% to 4% increase in consumption. Therefore, minimizing the evaporation temperature difference and increasing the evaporation temperature not only saves energy but also improves the relative humidity in the cold room.

As the condensation temperature rises, the compression ratio of the compressor increases, leading to a higher energy consumption per unit of refrigeration. For every 1°C increase in condensation temperature between 25°C and 40°C, power consumption increases by approximately 3.2%.

When the heat exchange surface of the condenser and evaporator is covered with a layer of oil, the condensation temperature rises, the evaporation temperature drops, resulting in reduced cooling capacity and increased power consumption. When an oil layer of 0.1mm thickness accumulates on the condenser surface, the refrigeration capacity of the compressor decreases by 16.6%, and the power consumption increases by 12.4%. For an oil-filled evaporator with a 0.1mm thick internal surface, to maintain the required low temperature, the evaporation temperature drops by 2.5°C and the power consumption increases by 9.7%.

When air accumulates in the condenser, the pressure of the condenser increases. When the partial pressure of non-condensable gases reaches 1.96105 Pa, the power consumption of the compressor needs to be increased by 18.

Five, prior to the temperature calibration at a condenser wall thickness of 1.5mm, where the condensation temperature rose by 2.8°C, and the power consumption increased by 9.7%.

The evaporator's surface is covered with frost, reducing the heat transfer coefficient. Particularly, the sandblasted outer surface of the finned tubes not only increases the heat exchange resistance but also makes air flow between the fins difficult, diminishing the appearance and the heat transfer coefficient as well as the heat dissipation area. When the indoor temperature falls below 0°C and there is a 10°C temperature difference between the two sides, the evaporator's heat transfer coefficient works at approximately 70 for a month before frosting occurs.

Seven, the compressed air intake allows a certain degree of overheating; however, excessive overheating leads to an increase in the specific volume of the intake air, resulting in a decrease in refrigeration capacity and an increase in relative power consumption.

When compressing against frost, quickly close the small intake valve, sharply reduce the cooling capacity, and relatively increase power consumption.