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Development, experimental testing, and performance analysis of a two-stage steam turbo compressor HTHP for solar assisted heat supply.

Number: 1286

Author(s) : DOWDELL J., MOEN O. M., ROTAN M., SCHLEMMINGER C.

Summary

Current cost-effective solar collectors are mainly used for low-temperature heating, such as building heating and other domestic low-temperature purposes, and cannot supply in the range of 180 – 200 °C needed for industrial purposes. The EU-funded FRIENDSHIP project has the proposed solution of combining a solar heating system with a high-temperature heat pump (HTHP) based on water (R-718) as a working fluid to upgrade the temperature to be used for both heating and cooling (achieved by absorption chillers). The work presented here is the further development and evaluation of steam compression performance using a two-stage turbo compressor configuration at inlet pressures of 1 – 2 bara. A maximum second-stage discharge pressure of 5.3 bar has been achieved, corresponding to a condensation temperature of 154°C. A novel shaft seal purge system has shown satisfactory performance in preventing steam leakage into the gearbox oil system.

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Pages: 10 p.

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Details

  • Original title: Development, experimental testing, and performance analysis of a two-stage steam turbo compressor HTHP for solar assisted heat supply.
  • Record ID : 30032763
  • Languages: English
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl2024.1286

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