A novel hybrid adsorption heat transformer – multi-effect distillation (AHT-MED) system for improved performance and waste heat upgrade

Investigation of an Adsorption Heat Transformer Cycle Using an Internal Heat Recovery Scheme

“…The effect of increased T M dominates the heat recovery amount for adsorption heat supply variation. As the temperature difference between the T M and T H decreases, the amount of supplied adsorption heat improves, as already established in the previous study [42]. The isothermal desorption heat variation follows analogous behavior to the isothermal adsorption heat as can be seen in Fig.…”

“…Exergetic performance evaluation of the AHT cycle based on the preheating heat, reflecting direct impact of the heat recovery on the exergetic performance. Saren et al [42] provided an extensive description of the AHT+MED hybrid system's working mechanism. A typical AHT cycle consists of four phases, viz., non-isosteric preheating, isothermal adsorption, non-isosteric precooling, and isothermal desorption.…”

“…e cond e des + e evap (7) A detailed steady-state mass and energy balance formulations for the MED system can be found in the literature by Saren et al [42]. They provided the performance ratio (PR) and water production rate (WPR) correlations for the hybrid AHT+MED system.…”

“…Here, the effect of the internal heat recovery on the combined performance of the AHT+MED system in terms of performance ratio and water production rate is discussed. The governing equations and the corresponding design parameters of the MED system used in the study by Saren et al [42] have been incorporated to model the present AHT+MED system. Fig.…”

“…The maximum possible gross temperature lifts (GTL) were in the range of 80 • C to 100 • C. The maximum COP values were within the span of 0.5 to 0.6. Saren et al [42] proposed a new hybridization of the AHT cycle and multi-effect distillation (MED) systems to increase the desalination potential of the MED system using upgraded heat generated by the AHT cycle. Recent studies on AHT cycle included equilibrium cycle performance evaluation [43,44] and dynamic performance optimization [45].…”