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PMV2 Two Stage PERMANENT MAGNET
Kaishan's Permanent Magnet Variable Frequency Rotary Screw Air Compressors revolutionize energy efficiency with advanced SKY2 technology, an integrated compressor system, and rare earth permanent-magnet motors. These compressors deliver unmatched efficiency, even at reduced air output, and operate with precision control through a PID algorithm for stable supply pressures.
The oil-cooled motor ensures low heat generation, reduced noise, and extended lifespan, while eliminating external excitation and fans. With a power factor near unity and simplified design, these compressors maintain peak performance across wide operational ranges, saving up to 50% energy in fluctuating demand scenarios. Their exceptional torque control, stability, and reliability redefine efficiency in the compressed air industry.
Kaishan's two-stage screw compressors deliver a 20% power advantage over equivalent single-stage compressors, thanks to their innovative inter-cooling system and divided compression ratio. Featuring a unique rotor design, the PMV2 series achieves superior efficiency, offering unmatched full-load performance and two-year paybacks in energy savings. Dividing compression across two stages reduces internal leakage and extends bearing life by reducing loads to one-third compared to single-stage compressors. With Variable Frequency Drive control, these compressors further optimize efficiency during part-load operation, making them a reliable and energy-saving choice for industrial applications.
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Kaishan’s Permanent Magnet Variable Frequency technology can adjust the motor’s rotating speed according to demand variation anytime. By regulating the volume of air output, the compressor can maintain maximum efficiency under all usage demands from 25 to 100%. Particularly in applications with widely fluctuating demand, Kaishan’s Permanent Magnet Variable Frequency type air compressors demonstrate a remarkable energy saving capacity as high as 50% over conventional types.
DOWNLOAD BROCHUREPermanent Magnet Two Stage Features
Two Stage Compressor Compression.
Complete control of air output to meet operating demand
Lower energy input for required air generation
Excessive part load energy consumption is significantly reduced
Gradual increase in motor speed eliminates starting spikes and cost penalties
A steady system pressure is maintained, lowering system stress and overall air demand
Reduced artificial demand due to lower operating pressures
Reduced maintenance time and cost
Significantly lower noise levels
KAISHAN TWO STAGE SCREW COMPRESSOR
Two-stage compressors have a power advantage over equivalent size single-stage compressors of 20 % percent for two key reasons: Inter Cooling System and division of Compression Ratio Kaishan Two-stage compressors use two sets of rotors arranged in a unique parallel design that achieve higher efficiencies than other two-stage rotor arrangements. The PMV2 series compressors offer unmatched full-load efficiency and often provide two-year paybacks in energy savings compared with a single-stage compressor. With the Variable Frequency Drive control, further operating efficiencies can be achieved during part-load operation.
Compression is divided between the two stages : In a single stage compressor operating at 72 psig at sea level, the compression ratio is 5 to 1 (in absolute terms). A two-stage compressor operating at the same pressure will have a compression ratio of 2.23 to 1 in First stage (2.23 is the square root of 5) achieving the compressor’s power savings.
Internal leakage losses are reduced :
Reduced pressure difference across each stage facilitates reduction in leakage loss.
Extended bearing life : By dividing the compression ratio across two stages, the two stages will significantly exceed the life of the average single-stage compressor. Bearing loads reduced to 1/3 of single stage Air-end
Use Multi-stage Compressors
Compressing in multiple stages allows cooling to occur between the stages, which saves work in the compression process. Inter-coolers are provided between successive stages of a multi-stage compressor to remove the heat of compression hence reduces the work of compression (power requirements).
P-V Graph For Single Stage
Compressor
P-V Graph For Two Stage Compressor With Intercooling
At Kaishan, we know that technological advancements march on, so we invest aggressively in the future. We continually work to make our products safer and more efficient while adhering to the OSHA standards.
