Energetic Analyses of a NH3-NaSCN Absorption Machine Operating at Three Pressure Levels

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

This study proposes a refrigeration cycle operating on a compression-absorption cycle. This instalation can improve the performance of an absorption refrigeration machine energy consuming low exergy value. This installation uses the NH3-NaSCN as refrigerant. In addition this cycle is working at three pressure levels, the absorber is operated at an intermediate pressure (Pint) between the pressures, PEV and PCD, for temperatures of evaporation and condensation, respectively (-10°C, 40°C). The machine operates at a temperature of generator TGE = 53 ° C and presents a COP of 0.60. For the same conditions the single stage machine presents a COP of not more than 0.55 at a generator temperature of 140 ° C.

Keywords

Absorptions COP evaporator refrigerant NH3 - NaSCN 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ridha Ben Iffa
    • 1
  • Lakdar Kairouani
    • 1
  • Nahla Bouaziz
    • 1
  1. 1.UR EE, ENITTunisTunisie

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