Productivity Augmentation of New Seawater Desalination Plants Integrating Absorption Desalination and Humidification/Dehumidification Plants Through Thermal Recovery

NourEldeen, El-Sadek H.; Harby, Khaled

doi:10.21608/jaet.2024.315125.1305

Productivity Augmentation of New Seawater Desalination Plants Integrating Absorption Desalination and Humidification/Dehumidification Plants Through Thermal Recovery

Document Type : Original Article

Authors

¹ Mechanical Power Engineering and Energy Dep., Faculty of Engineering, Minia University, Minia, Egypt

² Dep. Of Mechanical Engineering, College of Engineering, Taibah University, Al-Madinah Al-Munawarah, Saudi Arabia

10.21608/jaet.2024.315125.1305

Abstract

Solving water deficiency, energy crisis, and environmental concerns are typical practices in energy engineering practice nowadays. This work presents a new and effective integration between absorption (ABDP) and humidification-dehumidification (HDH) cycles using thermal recovery technique is theoretically investigated. Two scenarios are used to recover and exchange thermal energy between the rejected condensate heat from the ABDP condenser and the incoming saline feed water to the HDH humidifier and between the ABDP evaporator and the HDH dehumidifier. Performance of the proposed integrated ABDP-HRH are assessed and compared with the standard ABDP and HDH desalination plants. The results obtained showed that the presented thermal recovery scenarios have an effective enhancement in potable water production and GOR. Increasing generator temperature from 60 to 120°C elevates the productivity of the proposed integrated ABDP-HRH from 0.466 to 2.72 m3day-1 and the GOR from 2.12 to 2.38. The enhancement in the productivity of the proposed integrated ABDP-HRH was between 97.38 to 99.15 % while for the GOR was between 127.08 to 129.11% compared with those of the ABDP.

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