| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1274678 | International Journal of Hydrogen Energy | 2015 | 8 Pages |
•COP of the proposed cycle is nearly 25–32% greater than that for the classical system.•Maximum values of the COP are reached at lower generator temperature.•Better exergetic performances are achieved at low temperature and pressure values.•Proposed configuration can operate at low enthalpy sources (70 °C).•Absorption/compression hybrid system, presented, can be adapted to a solar source.
The objective of this work is to present an energy and exergy analysis of a novel configuration of absorption cooling system operating at low enthalpy sources. The double stage cycle developed in the present work is operating with water-ammonia. In this investigation, modeling and simulation of the proposed configuration is attempted. Also, a thermodynamic model based on the energy and exergy balances is developed. The obtained numerical results obtained have been compared with those corresponding to the conventional machine. Great emphasis is given to the estimation of the refrigeration systems’ performance, the exergy efficiency, the global exergy destruction in the system and the exergy destruction in each of the main components. The analyzed parameters are the coefficient of performance (COP), the irreversibility and the exergetic efficiency. The results of the study reveal that the performance of the novel configuration is better than that of the two stage conventional configuration. Besides, it allows a lower operating temperature, about 60–120 °C instead of 100–160 °C for the conventional cycle.
