StirLAIR-Series

StirLAIR air liquefaction plants: efficient and tailored to requirements

ERT supplies compact, ready-to-connect air liquefaction plants with their own tank storage unit for technical and medical applications, as well as customer-specific air liquefaction solutions for integration into existing process environments. The systems liquefy ambient air at a temperature of -194°C (79K). CO2 and water are separated during the conditioning process so that a liquid mixture of nitrogen and oxygen is available as the product. Changes in the quantity relation due to oxygen enrichment during storage are excluded by design.

Depending on the size of the system, one or two cryogenic generators based on the Stirling principle provide the cooling capacity for the liquefaction. Our product range includes systems with daily production capacities between 220 litres and over 2,000 litres of liquid air at 0.2 bar(g) tank storage pressure. At 5 bar(g) tank storage pressure, daily capacities between 370 litres and over 3,400 litres can be achieved. The storage pressure can be regulated as required.

StirLAIR systems are equipped with PLC-based system control and monitoring for automatic operation. The liquefied air is stored in a tank. Manual and automated removal solutions can be implemented according to customer specifications. The removal does not require the use of a pump.

For application environments with a growing demand for liquid air, ERT provides system configurations prepared for the installation of a second cryogenerator for production scaling.

The high energy efficiency of the Stirling cryogenerators, which have been tried and tested in industry for decades, low maintenance requirements and maintenance intervals of 6,000 operating hours guarantee a high overall cost-effectiveness of on-site air liquefaction with StirLAIR systems.

StirLAIR-1 (Compact) and StirLAIR-2

Delivery program air condenser up to 750l daily production capacity

StirLAIR-1 and StirLAIR-2 series air liquefaction plants are ready-to-connect systems which can be used to supply smaller applications independently of logistical processes and with exemplary reliability on-site. The series are based on single-cylinder cryogenic generators based on the Stirling principle with electric drive. For application environments without external cooling water supply, the systems can optionally be equipped with closed cooling systems.

As an integrated system, the StirLAIR-1 Compact building type offers maximum space efficiency on a base frame of only 3 m². The StirLAIR-1 model is also available pre-configured to scale the condensing capacity. The StirLAIR-2 type is a redundancy system with two independent cryogenic generators that enables uninterrupted air liquefaction even during maintenance work.

  • StirLAIR-1 Compact: Liquid air production capacity up to 300 l/day
  • StirLAIR-1: Liquid air production capacity up to 370 l/day
  • StirLAIR-2: Liquid air production capacity up to 750 l/day

As an integrated system, the StirLAIR-1 Compact building type offers maximum space efficiency on a base frame of only 3 m². The StirLAIR-1 model is also available pre-configured to scale the condensing capacity. The StirLAIR-2 type is a redundancy system with two independent cryogenic generators that enables uninterrupted air liquefaction even during maintenance work.

  • StirLAIR-1 Compact: Liquid air production capacity up to 300 l/day
  • StirLAIR-1: Liquid air production capacity up to 370 l/day
  • StirLAIR-2: Liquid air production capacity up to 750 l/day

StirLAIR-4 und StirLAIR-8

Delivery program air condenser up to 3.400l daily production capacity

StirLAIR-4 and StirLAIR-8 series air liquefaction plants are ready-to-connect systems for continuous on-site supply of medium and large applications independent of logistical processes. The series are based on four-cylinder cryogenic generators based on the Stirling principle with electric drive. For application environments without external cooling water supply, the systems can optionally be equipped with closed cooling systems.

The StirLAIR-4 construction type is also optionally available preconfigured for scaling the condensing capacity. As a redundancy system with two independent cryogenic generators, the StirLAIR-8 model enables uninterrupted air liquefaction even during maintenance work.

  • StirLAIR-4: Liquid air production capacity up to 1,700 l/day
  • StirLAIR-8: Liquid air production capacity up to 3,400 l /day

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