Algerian Journal of Engineering Research
Volume 1, Numéro 0, Pages 35-38
2017-01-02
A Comparative Study Of Two Different Refrigeration Systems Based Onabsorption Cycle.
Authors : Ouassila Larkeche . Abdeslam-hassen Meniai .
Abstract
Due to environmental concerns, new refrigerants are urgently needed and therefore energetically efficient and environmentally safe systems have to be developed. Although the vapor absorption refrigeration cycle is quite old, it is still being widely used in many industrial applications, with still the two traditional systems, namely Water/Lithium Bromide and water/Ammonia, as the working pairs. However, many research studies are based on the proposition and test of new refrigerant-absorbent pairs for the vapor-absorption cycle, as well as the corresponding adequate machines. Consequently, in this work a new absorption refrigeration cycle based on phase separation has been studied, where new combinations refrigerant-absorbent have been tested. The model is based on heat and mass balance equations in order to determine thermal efficiency of the cycle,trough the calculations of the coefficient of performance (COP). The relevant thermodynamic properties have been computed using group contribution methods. The obtained results are encouraging with, in some cases, reaching quite good values of the COP. In conclusion, this new cycle is promising and can be regarded as an interesting alternative both, environmentally and energetically, mainly due to hardware savings i.e. absence of condenser.
Keywords
Phase separation; Refrigeration cycle; Refrigerant; Absorbent; COP
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