THERMODYNAMIC AND EXERGOECONOMIC ANALYSES AND MODELING OF A NOVEL ABSORPTION COGENERATION SYSTEMS WITH AN ADJUSTABLE COOLING-TO-POWER RATIO

Abstract

In this work, a novel double-effect absorption combined cooling and power (DECCP) system with an adjustable cooling-to-power ratio is proposed. This cogeneration system uses water-LiBr as the working fluid. The novel cycle upon which this system is based has been mathematically modeled, simulated, and parametrically analyzed to generate the system’s performance charecteristics for several scenarios. The DECCP’s performance has been compared with those of other similar combined cogeneration systems. It was found that the proposed system outperforms the other systems from the vantage point of the power produced and the system’s ability to produce cooling. For specific operating parameters, the DECCP achieves a coefficient of performance (COP) that varies between 0.29-1.34 and an exergetic efficiency that varies between 36.55-55.28% based on the system’s mode of operation which is determined based on the refrigerant split ratio.