Abdullah A.S.Omara Z.M.Bek M.A.Essa F.A.Mechanical Engineering DepartmentCollege of EngineeringPrince Sattam Bin Abdulaziz UniversitySaudi Arabia; Mechanical Engineering DepartmentFaculty of EngineeringKafrelsheikh UniversityKafrelsheikh33516Egypt; Faculty of EngineeringTanta UniversityEgypt; General Systems Engineering DepartmentFaculty of EngineeringOctober University for Modern Sciences and Arts � MSAEgypt2020-01-092020-01-09202013594311https://doi.org/10.1016/j.applthermaleng.2019.114723https://www.sciencedirect.com/science/article/abs/pii/S1359431119353104ScopusA hybrid system of HDH and six wick stills was conducted to scrutinize the achievement of the system under different considerable conditions. Wooden cellulose and aspen pad were chosen as packing materials. Besides, different water flow rates (1, 2, 3, and 4 kg/min) were examined. Also, natural and forced air circulation with different fan speeds (500, 1000, and 1500 rpm) were investigated. The warm water exhausted from HDH was utilized to feed the wick distillers. A fan was fixed at the distillers� backside to condensate the excess vapor from the stills in dehumidifier. Results revealed that the cellulose paper provided higher productivity than the aspen pad. Besides, the optimal values of the water flow rate and the fan speed (causing air flow rate) are 4 kg/min and 1500 rpm, respectively. Moreover, when using the cellulose paper, the forced air circulation produced higher productivity than the natural circulation by 34%. The existence of condenser only improved the distillate by 16.6% compared to 3% improvement due to providing vapor drain only. At 4 kg/min, GORa of the hybrid system was 7.6 when using the condenser and providing a drain compared to 7.3 and 6.1 for the system with a condenser only and without any modifications, respectively. � 2019 Elsevier LtdEnglishCondenserDesalinationHDHHumidification-dehumidificationWick solar stillAirCelluloseCondensers (liquefiers)DesalinationDistillationFlow of waterHumidity controlHybrid systemsHydraulicsCellulose papersHumidification-dehumidificationNatural circulationOptimal valuesPacking materialsSolar distillersWater flow rateWick solar stillProductivityArticlehttps://doi.org/10.1016/j.applthermaleng.2019.114723