Xinran low pressure screw air compressor specially designed for the textile, cement and glass industries
When your air pressure is 0.2--0.5Mpa, choosing a conventional 0.7Mpa air compressor will cause power waste. Choosing a medium and low pressure air compressor can greatly increase the gas production of compressed air under the same motor power. Correspondingly, you can save electricity by 20 - 50%.

If you buy a machine with a 0.7Mpa and the actual pressure is 0.3Mpa, its working process is usually like this: the screw main engine first compresses the air to 0.7Mpa, and then reduces the pressure to 0.3Mpa through a pressure reducing valve and other means. In other words, you are using a pressure of 0.3Mpa and you are experiencing a power consumption of 0.7Mpa.

parameter table

Permanent magnet frequency conversion single-stage low voltage parameter table

model Power (kW) Pressure (bar) Flow rate (m3/min) starting method Exit size Overall size (length × width × height)(mm) Weight (kg)

XRF37-3.5Ⅰ

37 3.5 10 permanent magnet variable frequency DN80 1800×1300×1900 2100

XRF45-3.5Ⅰ

45 3.5 12 DN80 2500×1600×1740 2200

XRF55-3.5Ⅰ

55 3.5 16 DN80 2500×1600×1740 2400

XRF75-3.5Ⅰ

75 3.5 21 DN80 2850×1800×1912 3450

XRF90-3.5Ⅰ

90 3.5 29 DN80 2850×1800×1912 3500

XRF110-3.5Ⅰ

110 3.5 37 DN100 3440×2000×2320 4300

XRF132-3.5Ⅰ

132 3.5 43 DN100 3440×2000×2320 5400

XRF160-3.5Ⅰ

160 3.5 48 DN125 3720×2365×2385 6250

XRF185-3.5Ⅰ

185 3.5 56 DN125 3720×2365×2385 6400

XRF200-3.5Ⅰ

200 3.5 62 DN150 3720×2365×2385 7450

XRF220-3.5Ⅰ

220 3.5 68 DN150 4400×2350×2430 8200

XRF250-3.5Ⅰ

250 3.5 74 DN150 4400×2350×2430 8500

Permanent magnet frequency conversion dual-stage low voltage parameter table

model Power (kW) Pressure (bar) Flow rate (m3/min) starting method Exit size Overall size (length × width × height)(mm) Weight (kg)

XRF45-5Ⅱ

45 4-5 11.5 permanent magnet variable frequency DN65 2500×1600×1740 2300

XRF55-5Ⅱ

55 4-5 14.7 DN65 2500×1600×1740 2400

XRF75-5Ⅱ

75 4-5 19.2 DN80 2850×1800×1912 3450

XRF90-5Ⅱ

90 4-5 24.2 DN80 2850×1800×1912 3500

XRF110-5Ⅱ

110 4-5 27.2 DN100 3440×2000×2320 4300

XRF132-5Ⅱ

132 4-5 32.5 DN100 3440×2000×2320 4400

XRF150-5Ⅱ

150 4-5 38 DN125 3720×2365×2385 7200

XRF160-5Ⅱ

160 4-5 40.7 DN125 3720×2365×2385 7250

XRF185-5Ⅱ

185 4-5 46.9 DN125 3720×2365×2385 7400

XRF200-5Ⅱ

200 4-5 50.6 DN125 3720×2365×2385 7450

XRF220-5Ⅱ

220 4-5 56.5 DN150 4400×2350×2430 8600

XRF250-5Ⅱ

250 4-5 65 high frequency switching DN150 4400×2350×2430 8600

characteristics

• While ensuring normal production, reduce the exhaust pressure of the air compressor as much as possible. For every 1 bar lower the pressure, the energy is saved by about 7 - 10%.
• Permanent magnet motors save more than 10% energy than ordinary motors. Permanent magnet variable frequency air compressors can achieve constant voltage output, will not cause waste of pressure difference, do not need to be loaded and unloaded frequently, and save more than 30% energy than ordinary air compressors.
• Centralized linkage control of air compressors can avoid the stepped exhaust pressure increase caused by setting parameters of multiple air compressors, resulting in waste of output air energy.
• The internal temperature of the air compressor station is higher than that of the outdoor air, so outdoor gas production can be carried out, equipment maintenance and cleaning, oil quality can be maintained, and the heat dissipation effect of the air compressor can all play a role in reducing energy loss.
• Air compressor waste heat recovery equipment absorbs air compressor waste heat to heat cold water without additional energy consumption. It mainly solves problems such as domestic and industrial hot water, saving a lot of energy for enterprises.

Prove it in terms of exhaust volume

For a 132 kW, 0.7 Mpa screw air compressor, its displacement should be 24 m3/min. When selecting a medium and low pressure screw air compressor of 132 kW and 0.3 Mpa, its exhaust volume exceeded 39.8 m3/min! The savings in electricity bills will allow you to recoup your investment in less than a year.

According to the user's operating pressure, the internal compression ratio is automatically adjusted to maintain good specific power (energy efficiency) within the exhaust pressure range of 0.2~0.5Mpa. Forced lubrication by oil pumps ensures sufficient injection volume and appropriate oil-gas mixture ratio even at low exhaust pressures. Xinran low-pressure screw air compressor can reduce energy consumption by more than 18% for enterprises and countries. It is also one of the manufacturers that can produce low-pressure screw air compressors.