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Gas turbine waste heat driven multiple effect absorption system.

Author(s) : ALY S. E.

Type of article: Article

Summary

Two arrangements of the multiple effect absorption (MEA) type are presented. They are using water-lithium bromide. The first arrangement (MEA-I) is used as a cooling device and is coupled to an engine that drives a vapour compression cooling unit. The other one (MEA-II) is used as a solution concentration machine and is coupled to an engine that drives a reverse osmosis unit. Thermodynamic analysis for MEA-I showed a COP of 1.31 and 2.18 for evaporation temperatures of 5 and 14 deg C, respectively. Relative to the vapour compression, the MEA-I increased the cooling capacity by about 65/70%. Payback is interesting. The MEA-II is analyzed using sea water as an example for a water-based solution. Relative to a gas turbine driven reverse osmosis desalination unit the MEA-II increased the fresh water produced by 13.5%. As a solution concentration machine the MEA-II is equivalent to a machine with five evaporators. Based on selling the released solvent byproduct water alone, the MEA-II would have a payback period of 77 months.

Details

  • Original title: Gas turbine waste heat driven multiple effect absorption system.
  • Record ID : 1992-2696
  • Languages: English
  • Source: Heat Recov. Syst. CHP - vol. 11 - n. 5
  • Publication date: 1991

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