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High efficient 100 kW(el) R744 compressor.

Number: pap. n. 178

Author(s) : SCHMÄLZLE C., NEKSÅ P., OBRIST F., et al.

Summary

A flexible compressor and heat exchanger test facility has been built and installed in the laboratories of SINTEF and NTNU in Trondheim. It enables a thorough investigation of higher capacity R744 components like compressors, heat exchangers, expansion- and work recovery devices. The maximum electrical power input to the compressor is in the range of 100 kW. Various plate heat exchangers are applied as a baseline equipment to be able to investigate real system operations from evaporation temperatures around the triple point of R744 to maximum discharge pressures of 130 bar. Single stage R744 compressors with variable volume flow rates in the range of 10 to 90 m3/h are not available in the market. Therefore a novel high efficient, 6 cylinder piston compressor has been developed in close cooperation between SINTEF and OBRIST Engineering. The paper describes partly the design features of the compressor, as well as the measurement equipment of the test facility and the uncertainty range of the experimental results. Initial experimental results show an overall efficiency significant higher than state-of-the-art compressor concepts with ordinary asynchronous motors.

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Pages: 8 p.

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Details

  • Original title: High efficient 100 kW(el) R744 compressor.
  • Record ID : 30004320
  • Languages: English
  • Source: 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Publication date: 2012/06/25

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