Experimental performances of a LiBr-water absorption facility equipped with adiabatic absorber=Performance expérimentale d'une installation au LiBr /eau muni d'un absorbeur adiabatique Articles uri icon

authors

publication date

  • December 2011

start page

  • 1749

end page

  • 1759

issue

  • 8

volume

  • 34

international standard serial number (ISSN)

  • 0140-7007

electronic international standard serial number (EISSN)

  • 1879-2081

abstract

  • A facility for experimental evaluation of innovative components forming part of a single effect LiBr-H(2)O adiabatic absorption chiller is described. Plate heat exchangers have been incorporated in the design. Two adiabatic absorber configurations, droplets and liquid sheets, were designed and tested and its performances parameters were experimentally determined. Evaporator limitations have been identified and included in the analysis. Liquid accumulation leads to overflow of refrigerant out of the evaporators. Some general observations, regarding particular operating conditions, are reported. The absorber performance has been characterized in terms of heat and mass transfer through the heat conductance and the effectiveness. The influence of the recirculation ratio is presented for both cases. The liquid sheet configuration has shown better evaluation parameters than droplets configuration. A significant reduction in the absorber size (up to 50%) as compared to using droplets is possible.

keywords

  • absorption system ; lithium bromide ; chilled water ; air conditioning