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Simulation and performance analysis of a four-effect water-lithium bromide absorption chiller.

Author(s) : GROSSMAN G., ZALTASH A., DEVAULT R. C.

Summary

Performance simulation has been conducted for this chiller capable of substantial performance improvement over state-of-the-art double-effect cycles. The system investigated includes four condensers and four desorbers coupled together, forming an extension of the conventional double-effect cycle. Based on prior experience, a parallel-flow system was preferred over series flow, and double condenser coupling was employed, extendig from triple-effect cycles, to further improve performance. A modular computer code for simulation of absorption systems was used to investigate the performance of the cycle. The simulation was carried out to investigate the influence of some major design parameters. A COP of around 2 (cooling) was calculated at the design point, with a heat supply temperature of 315 deg C at the solution outlet from the high-temperature desorber. With some optimization of the weak (pumped) solution flow rate and of the solution split among the four desorbers, this COP may be raised above 2.2.

Details

  • Original title: Simulation and performance analysis of a four-effect water-lithium bromide absorption chiller.
  • Record ID : 1996-2225
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/01
  • Document available for consultation in the library of the IIR headquarters only.

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