الخلاصة:
In recent years, finding ways to improve absorption-system efficiency has been a great challenge for researchers.
Works were mainly focused on inventing new or hybrid cycles for refrigeration systems. The aim of this paper is to
study the absorption refrigeration. A number of absorption refrigeration systems are examined and discussed. The
study shows that double-effect absorption systems using lithium bromide/water seem to be the only high performance
system which is available commercially .It must be noted that, when the number of effects increase, COP of each
effect will not be as high as that for a single-effect system
