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The influence of NH3-H2O-LiBr ternary working fluid on the COP and solution circulation in ammonia absorption refrigeration system.

Number: 0699

Author(s) : XU M., LI S., JIN Z., DU K.

Summary

Using NH3-H2O-LiBr ternary working fluid is an effective way to promote the performance of ammonia absorption refrigeration system (AARS). First, the experiment results indicated that 15% was the optimum LiBr concentration. The COP and the exergy efficiency of the NH3-H2O-LiBr ternary system were promoted up to 7.6% and 8.96%. Second, the negative effect of LiBr on circulation was small and the COP rose when the LiBr concentration was less than 15%. But the circulation ratio increased by 121% when the LiBr concentration reached 20%, which resulted in COP sharply dropping. Third, the absorber cooling load decreased by 18.7% at most in ternary system. The application of NH3-H2O-LiBr ternary solution is beneficial for the miniaturization of absorber and AARS. Finally, the viscosity of the NH3-H2O-LiBr ternary solution was measured. The results indicated that temperature and NH3 had more influence on solution viscosity than LiBr.

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Pages: 11 p.

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Details

  • Original title: The influence of NH3-H2O-LiBr ternary working fluid on the COP and solution circulation in ammonia absorption refrigeration system.
  • Record ID : 30031645
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0699

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