Compact energy-savers
Thanks to refined and robust drive and cooling solutions, we achieve extremely low power consumption values.
If you additionally operate a Kaeser heat recovery system, you can save a significant amount on your heating costs. Consult our experts for advice!
What’s more, with their impressively compact design and relatively small exhaust air duct, our oil-free compression rotary screw compressors with water-cooling can be installed in smaller, low-ceilinged compressor rooms.
- Flow rate from 4.2 to 51 m³/min
- Also available as a peak load model with variable speed control and frequency converter (SFC model versions)
- Also with integrated i.HOC rotation dryer
Your benefits
- Particularly low compressed air discharge temperature:
The tube bundle for the two air/water heat exchangers consists of high-quality stainless steel pipes with roller-expanded aluminium star profile for optimum heat transfer. - Lower costs thanks to heat recovery:
With a Kaeser heat recovery system, up to 96% of compressor exhaust heat can be recycled – for example, to heat water up to +90°C. - Exceptionally maintenance-friendly:
The air/water heat exchangers for the 1st and 2nd compressor stages are housed in two separate enclosures, each with optimal accessibility thanks to large maintenance doors.
Highlights of our water-cooled CSG series
Compact footprint and ideal cooling
For perfect cooling, all air-conducting pipes are equipped with the innovative snowflake profile, which offers a number of advantages: The profile has a 46% higher heat transfer area, allowing for a 10% reduction in heat exchanger length and a 19% reduction in compressor footprint.
Optimal cooling water flow
Water-cooled CSG compressors are equipped with water regulating valves, which optimise the cooling water flow for all consumers downstream from each heat exchanger. This ensures cost-efficient and sustainable cooling water use. Furthermore, KAESER uses regulating valves that are airtight when closed at the water outlet. If the compressor does not require cooling, for example in standby operation, the water flow is stopped, resulting in more efficient usage of the cooling water.
Reduced pressure loss
The flow-optimised air inlet and outlet ensures significantly reduced pressure loss. In addition, the cooler air flow path is made of hygienic stainless steel.
Water-cooled, oil-free compression rotary screw compressors in detail
The purchase price and service costs account for just a fraction of the total lifetime cost of a compressor. Energy accounts for the lion's share of the system’s costs. As a leading compressed air systems provider, we offer individual planning tailored to your exact needs, an energy-efficient compressed air station and reliable service. We are there to partner you throughout the entire service life of your compressed air station.
The integrated SIGMA CONTROL 2 controller coordinates compressed air generation and ensures efficient, reliable machine operation. Moreover, it guarantees perfect interaction within the integrated system as a whole. All relevant components and operating states are monitored and evaluated. A multitude of communications functions are available to the operator, including the option of connecting the machine to other control technology (SCADA).
Fibre-free pulse dampers
Kaeser's new fibre-free pulse dampers keep pressure losses to an absolute minimum, help maintain consistent air quality and, unlike fibre versions, do not present a source of contamination for the compressed air.
Highly efficient condensate separator
Thanks to its flow-optimised design, the newly developed condensate separator reliably separates the condensate downstream from the air coolers, with minimal pressure loss.
Efficient and convenient use of recyclable compressor heat
With an integrated heat recovery module, recyclable compressor heat can be used for hot air space or process heating, as well as for heating of service or process water to temperatures up to 90 °C. This makes it possible to achieve an amortisation period of less than a year.
Hot water up to +90 °C
Recovered heat energy can be used in any number of ways. Heat recovery provides warm water up to 90 °C as appropriate for specific applications.
Heat recovery a win
Amazingly, 100 percent of the electrical energy input to a compressor is converted into heat. Of this, up to 96 percent is available for heat recovery purposes.
Maximum availability despite heat recovery
During maintenance work on the water system of the heat recovery system other than the compressor, an optionally available complete internal water circuit (with pump, expansion valve, safety valve, etc.) ensures reliable compressor performance.
Reliable heat recovery for your application
For self-protection purposes, compressors with integrated heat recovery are equipped with a secondary water system. This separation into a primary and secondary water system not only ensures reliable compressed air supply availability with optimum heat recovery performance, but also provides the flexibility of coupling or decoupling the oil and jacket cooling to / from the heat recovery system according to required heating demand.
Bolt-down machine mounts
- Machine mounts to bolt the machine to the floor
Heat recovery
- Integrated heat exchanger system comprising parallel switched tube-type heat exchanger, heat exchanger (water/water), pump, expansion valve and water control valves
Hot air connection
- Direct use of the hot compressed air, e.g. for heat regenerating desiccant dryer or as hot process air.
- With certain models, the desired hot air temperature can be controlled in ranges.
