Energy Efficient Compressor 8-20 bar

The OGWYC series of water-injected screw compressors is crafted to supply entirely oil-free air, perfect for facilities with high compressed air demands. With energy saving up to 25%, these high cfm air compressors ensure top performance while greatly reducing maintenance costs.

Two Stage Variable Speed Water Injected Energy Efficient Screw Compressor Model: OGWYC

Discharge Pressure: 8-10 [bar], 116-290 [psig]
Free Air Delivery: 20.0-60.0 [m³/min], 706-2119 [cfm]
Rated Motor Power: 92-355 [kW], 123-476 [hp]

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Features
Technical Specifications
Configuration
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100% Oil-Free Operation
The compressor uses water for lubrication instead of oil, ensuring 100% clean and pure compressed air that meets ISO 8573-1 (2010) and TÜV CLASS ZERO standards.

High Efficiency

Single-Screw Technology: Eliminates clearance volume, improving performance.
Water Lubrication: Seals gaps in the compression chamber, allowing for high efficiency even at temperatures close to 50°C.
Near Isothermal Compression: Uses water as a cooling medium to maintain constant air temperature throughout compression, reducing energy consumption.

Low Noise

Quiet Design: Single screw airend utilizes a stainless steel screw rotor and polymer-made star wheels for meshing components.
Direct Coupling: Features a direct coupling between the motor and the screw, minimizing vibration and noise.
Sound Insulation: The enclosure is lined with sound-absorbing material to effectively reduce noise levels.

Energy Saving

VSD+PM Motor: 2 Variable speed drives combined with 2 permanent magnet motors for exceptional energy efficiency and savings.

Stable Air Delivery

Dynamic Pressure Control: The controller continuously monitors discharge pressure using the compressor’s pressure sensor and adjusts the inverter’s output frequency to regulate motor speed and ensure stable free air delivery.

Robust Components

Stainless Steel 304: All piping and key components, including the airend (rotor and housing) that come into contact with air and water, are constructed from durable Stainless Steel 304. This ensures long-lasting performance and resistance to corrosion.

OGWYC Model Configuration

Gairs Airend

Stainless steel 304 rotor & housing
Star wheel pieces material: PEEK (polyether ether ketone)
Speed of Revolution: 3000 rpm

Permanent Magnet Motor

Motor Enclosure Protection: IP55
Energy Efficiency Class: IE5
Direct coupling

Inverter & PLC controller

Brand: Inovance
Language: Chinese, English, Korean, Russian

Centrifugal Fan (air-cooled unit)

Enhanced cooling efficiency
Reduced noise levels

Electrics

AC Contactor brand: Schneider

Parts & Valves

Water softener brand: Pentair
Normally open/closed solenoid valves: SMC, Parker

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Industry-Leading Single Screw Airend

With nearly 40 years of R&D in single screw technology, Gairs is proud to be a global leader in single screw airend manufacturing, setting industry standards worldwide.

Low Maintenance Cost

Regular maintenance (excluding airend overhaul) is easy—just change the air filter, water filter, and water softener elements on a regular basis. Unlike other compressors, there’s no need for extra spare parts, making upkeep hassle-free.

Engergy Saving Up to 13%

When compared to OWGY(B) models and other similar compressors, the OGWYC energy efficient compressor employ a two-stage compression system. This design improves pressure distribution and reduces the compression ratio, resulting in enhanced power efficiency for the compressor.

Let’s calculate how much an OGWYC model can save on your electric bill. For an air delivery volume of 40 m³/min at 10 Bar, the OGWYC requires a motor power of 220 kW, while a comparable compressor needs 250 kW. Assuming the machine operates 12 hours a day, 365 days a year, the annual energy savings can be calculated as follows:

30kW×12hours×365days×$0.15=$19,710

Thus, you could save approximately $19,710 annually.

Comparison

Motor Power Difference	OGWYC Two Stage Oil-free Screw Compressor	OGWY Single Stage Oil-free Screw Compressor
20m³/min @ 10 Bar	120 kW	132 kW
24m³/min @ 10 Bar	140 kW	160 kW
30m³/min @ 10 Bar	180 kW	200 kW
40m³/min @ 10 Bar	220 kW	250 kW
30m³/min @ 8 Bar	165 kW	185 kW
40m³/min @ 8 Bar	200 kW	250 kW

Frequently Asked Questions

The following are frequently asked by our customers about OGW series water lubricated oil-free air compressors.

What's the requirement for the lubricating water used in the Gairs compressor?

Reverse osmosis (RO) water must be used as the lubricating water source.
In our Gairs OGW series of water-lubricated compressors, lubricating water is injected into the airend to facilitate cooling. Inside the airend, the water acts as a seal between the star wheel and the screw rotor, enhancing the compressor’s volumetric efficiency. Since the lubricating water continuously circulates within the system, its quality directly impacts the airend’s lifespan.

What makes two-stage oil free screw compressors more energy efficient than single-stage models?

Two-stage oil-free energy efficient compressors split the compression into two phases, which reduces heat build-up and requires less energy for each stage. This design can achieve up to 13% energy savings over single-stage compressors.

How does the two-stage compression process contribute to reduced power consumption?

The two-stage process lowers the amount of work needed for compression by cooling the air between stages. This cooling reduces energy demand and increases compressor efficiency.

What industries benefit most from the 2-stage energy efficient compressors?

Industries with high air volume and energy efficiency demands, such as pharmaceuticals, food and beverage, automotive, and electronics manufacturing, benefit significantly from two-stage oil-free compressors due to cost savings and cleaner air output.

What's the lead time?

Typically, the lead time for a single-stage model is approximately 25-30 working days, while the lead time for a two-stage model is around 40-45 working days.

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