Rotary Screw Compressors ASD Series
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Rotary Screw Compressors ASD Series With the world-renowned SIGMA PROFILE Flow rate 0.89 to 6.39 m3/min, Pressure 5.5 to 15 bar www.kaeser.com

ASD – Even more efficient KAESER KOMPRESSOREN pushes the boundaries of compressed air efficiency once again with its latest generation of ASD (ASD.4) series rotary screw compressors. Not only do these optimised ASD compressors deliver more compressed air for less energy, but they also combine ease of use and maintenance with exceptional versatility and environmentally responsible design. Perfect partners The newly refined ASD systems save energy in multiple ways: the compressor airends feature further refined SIGMA PROFILE rotors and are controlled and monitored via the industrial-PC-based...

Service-friendly design

Uncompromising efficiency Save energy with the SIGMA PROFILE SIGMA CONTROL 2: Assured efficiency At the heart of every ASD system lies a premium quality airend featuring KAESER’s SIGMA PROFILE rotors. Flow-optimised for impressive performance, these advanced rotors help KAESER ASD systems set the highest standards for efficiency. The internal SIGMA CONTROL 2 controller ensures efficient compressor control and monitoring at all times. The large display and RFID reader provide easy communication and maximum security. Variable interfaces enable seamless networking capability, whilst the SD...

Premium compressed air quality with an add-on refrigeration dryer Power consumption ▀ Power consumption: KAESER add-on dryer (kW) ▀ Power consumption: Refrigeration dryer with continuous control ▀ Energy saving: KAESER add-on dryer 100% Energy-saving control Dependable KAESER centrifugal separator The integrated refrigeration dryer in ASD-T units provides high-efficiency performance thanks to its energy-saving control. The dryer is therefore active only when compressed air actually needs to be dried: as a result, this approach achieves the required compressed air quality with maximum...

High-efficiency drive system: Efficiency class IES2 The new EN 50598 standard The European eco-compatible design standard EN 50598 defines the requirements for drive systems in electrically driven production machines. It specifies system efficiency, taking into account losses from the motor and frequency converter. With 20 % lower losses compared to the benchmark, KAESER systems meet the standard with ease. Maximum energy efficiency For the variable frequency systems in the ASD series, KAESER meets the IES2 system efficiency standard, which indicates the highest possible level under the EN...

Speed-controlled compressor with synchronous reluctance motor Precision pressure control The flow rate can be adjusted within the control range according to pressure. Operating pressure is kept constant to within ±0.1 bar. This allows maximum pressure to be reduced, which, in turn, leads to significant energy and money savings. Durable and service-friendly: the rotors of the synchronous reluctance motor do not contain aluminium, copper or magnetic materials using rare earth metals. That makes the bearings and rotors as easy to replace as those in asynchronous motors. The functional...

Maximum efficiency with variable frequency synchronous reluctance motor Efficient synchronous reluctance motor This motor series combines the advantages of asynchronous motors and synchronous motors in one drive system. The rotors do not use aluminium, copper or expensive rare earth magnets. Instead they are made of electrical steel with a specialised profile and arranged in series. This makes the drive highly durable and service-friendly. Combined with a high-performance frequency converter The Siemens frequency converter has a motor-matched control algorithm. With the fine-tuned...

Your benefits at a glance: Best system efficiency: IES2 as per EN 50598 Maximum energy efficiency throughout the control range Durable and service-friendly drive Advanced drive technology Minimal operating costs, high productivity and availability Entire system EMC-certified Asynchronous reluctance Synchronous reluctance Performance Applications for speed-controlled compressor systems with synchronous reluctance motors A recent study shows that the typical compressed air consumption profile is in the 30-70 % range of the maximum. This is where a speed-controlled rotary screw compressor with...

ambient heat total electrical power consumption compressed air energy potential Approx. 5 % heat dissipation from the drive motor heat dissipated by the compressor into the ambient air Approx. 76 % heat energy recoverable through fluid cooling heat remaining in the compressed air heat energy recoverable through compressed air cooling recoverable heat energy Savings calculation example for warm air heat recovery in terms of fuel oil (ASD 60) Maximum available heat capacity: Fuel value per litre of fuel oil: Fuel oil heating efficiency: Price per litre of fuel oil: Cost saving: Further...

Heat recovery system Cost-effective heating Heat recovery simply makes sense Space heating with warm exhaust air Amazingly, 100 % of the electrical drive energy input to a compressor is converted into heat energy. Of that heat, up to 96 % is available for heat recovery purposes. Use this potential to your advantage! It’s heating made easy: thanks to the high residual thrust radial fan, exhaust (warm) air can be easily ducted away to spaces that require heating. This simple process is thermostatically controlled. Process, heating and service water Hot water, up to 70 °C, can be produced from...

Heat recovery Energy-saving, versatile and flexible Required heating energy (%) PTG plate heat exchanger system PTG plate-type heat exchangers consist of a package of pressed stainless steel plates. They provide excellent heat exchange characteristics with an impressively small form factor. PTGs can be integrated into existing hot water supply systems and are suited for industrial applications. Required heating energy over the course of a year It goes without saying that heating is necessary during the winter months. However, it is also required to a greater or lesser extent at other times...