Thermodynamic Analysis of Series and Parallel Flow Water/Lithium Bromide Double Effect Absorption System with Two Condensers

Most cooling systems use mechanical vapor compression systems and are driven by electrical power. Absorption chillers offer an alternative approach; thereby thermal power is the driving force. The thermal power is commonly derived from industrial waste heat, renewable energy sources, or other thermal sources. In addition absorption cooling systems use natural substances, which do not cause ozone depletion, as working fluids. Commercially available absorption chillers for air conditioning applications usually operate with solution of lithium in water and use steam or hot water as the heat source. Many analyses have been conducted on single effect and double effect absorption systems that had just one condenser. In this paper a series double effect and parallel double effect absorption systems are analyzed. First the systems were analyzed thermodynamically according to the first and second law of thermodynamics. Then a computer code was developed to simulate the thermodynamic analysis. And finally with help of this code, the performance of these cycles is simulated and compared. As a result we can say that the first and second law performance of parallel is higher than series one.