The power saving of screw air compressor depends on the model selection and operating conditions. The frequency conversion model has significant energy saving effect under partial load conditions. The power frequency model has high energy consumption at full load, and the energy efficiency level, maintenance status, system design and other factors will also affect the actual power consumption.. The following is a detailed analysis of the power saving of screw air compressor:
energy Saving Advantages of Frequency Conversion Screw Air Compressor
- accurate matching of gas demand: The variable frequency screw air compressor adjusts the motor speed in real time to accurately match the output air volume with the actual demand, thus avoiding the high energy consumption problem of the traditional power frequency air compressor during partial load operation.
- significant energy saving rate according to the actual test, under partial load conditions, the energy saving rate of the variable frequency screw air compressor can reach 15% ~ 30% compared with the traditional power frequency air compressor. For example, in the medium load (gas load accounts for 70% of the rated exhaust volume) scenario, the energy saving of the variable frequency screw air compressor can reach 3984 degrees of electricity per month, and the annual energy saving income is significantly improved.
- Extend equipment life: The frequency conversion model runs more smoothly, reduces mechanical friction and impact, reduces equipment wear, thereby prolonging the service life of the equipment and further reducing long-term operating costs.
Energy consumption characteristics of power frequency screw air compressor
- high operating efficiency at full load: Under full load operation, the energy consumption of the power frequency screw air compressor is relatively stable and the efficiency is high. However, in actual production, full load operation is rare, most of the time in a partial load state.
- High partial load energy consumption: When the gas demand is lower than the rated displacement, the power frequency screw compressor cannot adjust the output gas volume, resulting in energy waste. For example, in the low load (gas load accounts for 50% of the rated displacement) scenario, the energy consumption gap between the power frequency screw air compressor and the variable frequency model is further widened.
Other Factors Affecting Energy Consumption of Screw Air Compressor
- energy efficiency grade: There are significant differences in energy consumption of screw air compressors with different energy efficiency grades. Compared with the three-level energy-efficient model, the first-level energy-efficient model can save a lot of electricity under the same operating conditions.
- Maintenance status: Regular maintenance and maintenance are essential to the operating efficiency of the screw air compressor. If the equipment is not maintained and maintained in time, it may cause serious wear of mechanical parts, increase system leakage, and increase power consumption.
- System Design: Reasonable system design can reduce the energy consumption of screw air compressor. For example, by optimizing the layout of the pipe network, reducing the leakage of the pipe network, and reducing the system resistance, the operating efficiency of the screw air compressor can be improved.
