A novel ejectors integration with two-stages adsorption desalination: Away to scavenge the ambient energy

To mitigate the future global desiccation and energy poverty, adsorption desalination is an alternative research area that is under widespread scrutiny and investigation. Recently, ejector-assisted adsorption desalination sets new directions to investigate this low-cost and energy-efficient technology. However, it has been observed that the adsorption desalination cum cooling (ADCs) system has no capability to operate below 70 °C. In order to address this research problem in this study, we proposed three configurations that allow the ADCs to operate below 70 °C. First time, the two-stage ADCs is hybridized with two and three ejectors, respectively. The innovative configurations are modeled and investigated numerically by lays down the basic concepts of energy, heat, and mass balance. In addition, the effectiveness of proposed configurations are explored and compared based on performance indicators (SDWP, SCP, and COP) considering the viewpoint of the minimum possible system driving temperature. Results reveals that two-stage ADCs employing two ejectors is capable to produce SDWP of 2.34 m³/ton/day with 0.54 COP at 45 °C regeneration temperature. For further enhancement in performance three ejectors-assisted ADCs have potential to produce SDWP ∼3 m³/ton/day with 0.7 COP at 45 °C which is promising configuration in terms as comparted to single-stage ADCs incorporating two ejectors.