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Air cycle feasibility using a novel, single rotor compander for refrigeration and heating.

Number: 1167

Author(s) : FENTON J., SUBERT J., HINCHLIFFE K., BIANCHI G., TASSOU S.

Summary

Air-cycle is an alternative thermodynamic approach to vapour compression/adsorption cycles, satisfying cooling & heating needs for industrial and residential processes with zero GWP and zero ODP. This paper presents a one-dimensional analysis of a novel open air-cycle system, incorporating the FeTu™ positive displacement compander, a single spherical two-stage rotor acting both as compressor and expander. The cooling capacity and Coefficient Of Performance (COP) of a small 84mm rotor are simulated over temperature differentials between 0-80˚C and operating speeds 500-3000r/min. The indicated cooling power is 210W at 3000r/min and temperature differential (ΔT) of 80˚C. The study indicates that this single device approach overcomes COP limitations normally associated with conventional air-cycle cooling solutions. Based on 20˚C ambient air inlet temperature, the COP is determined to be 2.5 at ΔT 0˚C, 5 at ΔT 20˚C and 9 at ΔT 40˚C. These simulations characterise the device and demonstrate pre-test performance and feasibility as a cooling/heating solution. A proof of concept test is eventually presented and benchmarked against the model results to outline paths for improvement for the ‘roticulating’ compander.

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Pages: 8

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Details

  • Original title: Air cycle feasibility using a novel, single rotor compander for refrigeration and heating.
  • Record ID : 30027687
  • Languages: English
  • Source: IIR Rankine Conference 2020.
  • Publication date: 2020/07/31
  • DOI: http://dx.doi.org/10.18462/iir.rankine.2020.1167

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