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Investigation of two-phase injected compression with economization for high temperature application.

Number: pap. n. 292

Author(s) : BAHMAN A., ZIVIANI D., GROLL E.

Summary

An economized two-phase injection (ETI) system has been investigated under extreme high ambient temperatures. An Environmental Control Unit (ECU) for military applications with a cooling capacity of 17 kW was retrofitted with a plate heat exchanger (PHX) economizer and an electronic expansion valve to control the injection state during the compression process. Two-phase injection was compared with both saturated vapor injection and no-injection (baseline) under different testing conditions up to an ambient temperature of 51.7 ºC (125 ºF). The experimental results show a significant reduction in compressor discharge temperature up to 11.4 K and an improvement in cooling capacity up to 10% while maintaining approximately the same COP. The increase in compressor power consumption suggested further potential for ETI optimization for air conditioning (AC) application at high ambient temperature.

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Pages: 8

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Details

  • Original title: Investigation of two-phase injected compression with economization for high temperature application.
  • Record ID : 30026223
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0292

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