Evaporation-Assisted Humidification–Dehumidification Cycles for Desalination Application in Tropical and Subtropical Regions

The present study aims to evaluate the performance of evaporation-assisted humidification–dehumidification (E-HDH) desalination, specifically direct evaporative (DE-HDH), indirect (IE-HDH), and Maisotsenko (ME-HDH) systems. To achieve this, a thermodynamic modeling approach is utilized, which incorporates wet bulb effectiveness method, psychrometric relationships humid air, equations that govern heat mass balance. key indicators studied E-HDH desalination systems are estimated concerning operating parameters. results show ME-HDH system capable producing comparatively higher water production rate (WPR) ranging between 0.01 7.92 g/s as compared DE-HDH IE-HDH sensible cooling flux was observed be high at dry-bulb temperature (Tdb) 50 °C relative humidity (RH) < 0.2, having value 5.26 kW for system, followed by (3.23 kW) (3.11 due relatively flow rates. latent in case system. Minimum specific energy consumption from consequently, maximum gain output ratio (3.32) realized. In addition, realized an increment air velocity significantly improves WPR. accordance with climatic conditions Saudi Arabia cities, it has been Al-Hofuf Riyadh produce WPRs minimum consumption. Al-Hofuf, average WPR recorded 185.51 kg/day, (180.33 kg/day). required 0.042 kWh/kg 0.034 both accordingly.