Energy saving calculation: The average gas production of a 37KW ordinary air compressor is only 70% of the rated exhaust volume. It operates for 8,000 hours a year and costs 0.7 yuan/kWh. Compared with a variable frequency air compressor, it consumes more electricity as follows:

A No-load power consumption: 30% unloading time × no-load current loss generated during unloading (45% × 37KW/h) × 8000h × 0.7 yuan/degree = ¥27972 yuan

B Pressure difference power consumption: 70% loading time × loss caused by 2 bar pressure difference (14% × 37KW/h) × 8000h × 0.7 yuan/degree = ¥20306 yuan

Power saving in one year: 27972+20306=48278 yuan/year Power saving in three years: 48278 yuan/year×3 years≈144834 yuan

Summary: A variable frequency screw air compressor operates for 8,000 hours a year, with an average load of 70%, and directly saves electricity as shown below:

7 reasons to choose variable frequency air compressor

1. Maintenance costs are significantly reduced: Maintenance costs are significantly reduced because the frequency conversion air compressor reduces the mechanical and electrical impact during operation, and at the same time reduces the maintenance and repair volume of the air compressor. 

2. Achieve constant pressure air supply: reduce the pressure loss caused by the air supply pressure difference. Variable frequency air compressors improve the control accuracy of air supply pressure. Constant pressure air supply greatly improves the production efficiency and quality of enterprises, while reducing energy consumption caused by higher pressure differences.

3. Improve gas production efficiency: increase gas production by about 5%-15%: avoid energy waste caused by frequent loading, unloading, and shutdown (such as no-load energy consumption, compressed air vent loss during unloading, etc.)

4. Extend the service life of the screw air compressor: a. Frequency conversion soft start b. Smooth operation c. No power frequency device to avoid electrical contact failure. d. Impact on the motor: the average speed is reduced and the service life of the motor bearing is increased. e. Machine The service life of the bearings of the head is inversely proportional to the speed. The speed is reduced and there is no dead time. The lubrication of the machine head is more sufficient, which eliminates the impact of the star-delta start on the machine head and motor bearings, prolongs the service life, and extends the life of the belt or coupling. Service life

5. Improve the operating efficiency of the transformer and power grid: The frequency converter has a soft start function to reduce the startup impact on the power grid.

6. Reduce noise: smooth operation, constant pressure air supply, lower noise.

7. High cost performance

★Intelligent LED liquid crystal display control system: Microcomputer intelligent monitoring system, fully automated Chinese and English display, touch buttons, easy to operate.

★Intelligent 360-degree all-round safety protection device saves you worry, effort and money

1. Excessive exhaust temperature protection 2. Exhaust pressure excessive protection 3. Power supply error protection (phase loss, reverse phase protection)

4. High current protection 5. Electrical failure protection 6. Motor overload protection 7. Fan motor failure protection 8. Oil pressure abnormality protection 9. Oil shortage protection

★Maintenance reminder function:

1. Air filter: digital pressure difference indication & warning reminder when usage time reaches set value

2. Oil filter: Digital pressure difference indication & warning reminder when usage time reaches set value

3. Oil and gas separator: digital pressure difference indication & warning reminder when the usage time reaches the set value

★Multi-machine chain remote monitoring system

In the office, you can monitor the operating status of the compressor from your computer at the same time, making it easier to manage the machine and saving energy.

Using the network, you can expand the monitoring scope and improve the maintenance operation time, total load time, exhaust pressure, exhaust temperature, operating current, fault details, etc. at a glance.