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Secondary properties of aqueous lithium bromide solutions.

Author(s) : HEINONEN E. W., TAPSCOTT R. E.

Summary

Lithium bromide (LiBr) absorption chillers must be operated close to the temperature and mass fraction (concentration) at which lithium bromide crystallizes in order to achieve the highest efficiencies. It may be possible to monitor the LiBr mass fraction by sensors that measure secondary properties that vary with concentration to determine when the crystallization point is being approached. A recent project categorized and determined the availability of LiBr secondary properties and assessed current sensor technologies. Property/sensor combinations were evaluated for cost, mass fraction accuracy, availability, reliability, effects of additives, and data availability. While no sensor was rated outstanding, five sensors (an ultrasonic concentration analyzer, a fiber optic refractometer, an electrical conductivity meter, a specific ion detector, and the Coriolis density meter) were rated as having the most potential.

Details

  • Original title: Secondary properties of aqueous lithium bromide solutions.
  • Record ID : 2000-1831
  • Languages: English
  • Source: ASHRAE Transactions. 1999 Winter Meeting, Chicago, Illinois + CD-ROM.
  • Publication date: 1999
  • Document available for consultation in the library of the IIR headquarters only.

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