Experimental investigation of humidification-dehumidification desalination system with corrugated packing in the humidifier

Ahmed, Hossam A.; Ismail, Ilham Ameera; Saleh, Wael; Ahmed, Mahmoud

doi:10.1016/j.desal.2017.01.036

Cited by 100 publications

(12 citation statements)

References 27 publications

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“…The hour angles are negatively valued for the first half of the day and positively valued in the afternoon. The following relation is employed to calculate the hour angle [17,19]:…”

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confidence: 99%

Integration of Process Modeling, Design, and Optimization with an Experimental Study of a Solar-Driven Humidification and Dehumidification Desalination System

et al. 2018

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Solar energy is becoming a promising source of heat and power for electrical generation and desalination plants. In this work, an integrated study of modeling, optimization, and experimental work is undertaken for a parabolic trough concentrator combined with a humidification and dehumidification desalination unit. The objective is to study the design performance and economic feasibility of a solar-driven desalination system. The design involves the circulation of a closed loop of synthetic blend motor oil in the concentrators and the desalination unit heat input section. The air circulation in the humidification and dehumidification unit operates in a closed loop, where the circulating water runs during the daytime and requires only makeup feed water to maintain the humidifier water level. Energy losses are reduced by minimizing the waste of treated streams. The process is environmentally friendly, since no significant chemical treatment is required. Design, construction, and operation are performed, and the system is analyzed at different circulating oil and air flow rates to obtain the optimum operating conditions. A case study in Saudi Arabia is carried out. The study reveals unit capability of producing 24.31 kg/day at a circulating air rate of 0.0631 kg/s and oil circulation rate of 0.0983 kg/s. The tradeoff between productivity, gain output ratio, and production cost revealed a unit cost of 12.54 US$/m3. The impact of the circulating water temperature has been tracked and shown to positively influence the process productivity. At a high productivity rate, the humidifier efficiency was found to be 69.1%, and the thermal efficiency was determined to be 82.94%. The efficiency of the parabolic trough collectors improved with the closed loop oil circulation, and the highest performance was achieved from noon until 14:00 p.m.

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“…The hour angles are negatively valued for the first half of the day and positively valued in the afternoon. The following relation is employed to calculate the hour angle [17,19]:…”

mentioning

confidence: 99%

Integration of Process Modeling, Design, and Optimization with an Experimental Study of a Solar-Driven Humidification and Dehumidification Desalination System

et al. 2018

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“…Ahmed et al [38] accomplished an experimental study in which they analyzed the performance of an HDH desalination system. The main analyzed variables were the air and water temperatures that enter the humidifier, the water, and the air mass rate, besides the cooling water mass flux that enters the condenser.…”

Section: Discussionmentioning

confidence: 99%

A Review of Humidification-Dehumidification Desalination Systems

Carvalho

Coimbra

Lemos

et al. 2020

Int. J. Res. Granthaalayah

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This article aims to accomplish a review of state of the art in the humidification-dehumidification (HDH) desalination process. Foremost, an introduction to the main desalination technologies is presented to clarify the positives and negatives effects of each. Costs and project data are presented for experimental and theoretical studies. The information is shown by using tables, explaining the major variables, and the obtained results for each study. News regarding plants under the sea and packed beds are the main considerations of the present paper.

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“…Ahmed et al 153 evaluated a HDHWDS using a new packing material, manufactured from aluminum sheets, inside the humidifier to improve the performance of WDS. The results showed that decreasing cooling water temperature by 11.5°C leads to an increase in freshwater productivity by 5 L. Further, the total cost per liter of produced fresh water was about $0.01.…”

Section: The Main Components Of Hdh Systemmentioning

confidence: 99%

“…27 The solar collectors can be evacuated tube collector (ETC), 85,103,104 flat-plate collector (FPC), [147][148][149] F I G U R E 2 0 Schematic diagram of HDH desalination unit 143 [Colour figure can be viewed at wileyonlinelibrary.com] parabolic trough collector (PTC), 69,70,91 Fresnel lens collector (FLC), 71,150 solar still (SS), 63,64,151,152 or solar pond systems. 72 Different types of electrical energy for heating water in HDH desalination systems were presented by a number of researchers based on electrical heaters 95,100,153 and electrical resistances. 47,154 On the other hand, different heating sources of energy such as the geothermal energy, 79 heat pump, 125 and hybrid solar and thermal energy system 76 were investigated.…”

Section: Water Heating Systemmentioning

confidence: 99%

Desalination process using humidification–dehumidification technique: A detailed review

et al. 2020

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Summary The lack of fresh water resources is one of the important reasons obstructing progress all over the world. To overcome this crucial situation, the water desalination system (WDS) is progressed, enhanced, and modified. The desalination plant is mostly powered by nonrenewable energy resources, mainly by fossil fuels that make it an expensive and high‐energy‐consuming technology. Therefore, it is indispensable to depend on renewable energy supplies to drive desalination systems. Recently, the total thermal energy desired to operate the humidification–dehumidification desalination systems can be gained from renewable/sustainable energy resources such as geothermal energy and solar energy. Among the different desalination techniques, the HDH is considered one of the most effective desalination techniques to manage the critical issue of shortage of drinking water. The current paper presents a comprehensive review of diverse types of HDH desalination systems as well as their fundamental components. The present work revealed that the seawater HDH system is a promising technology to produce fresh water, particularly for decentralized demand. The packed bed humidifier is the most utilized type in the HDH water desalination system than other types of humidifiers. Furthermore, the direct dehumidifier enhances the performance of HDH desalination system compared to the indirect one. The present study concludes that the hybrid energy systems have the highest gain output ratio, while the thermal energy systems have the lowest gain output ratio. Water heating with solar energy has a significant enhancement in system productivity compared with solar air heating. The HDH WDS incorporated with heat pump achieves appropriate system productivity and gain output ratio with the lowest cost per liter.

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Experimental investigation of humidification-dehumidification desalination system with corrugated packing in the humidifier

Cited by 100 publications

References 27 publications

Integration of Process Modeling, Design, and Optimization with an Experimental Study of a Solar-Driven Humidification and Dehumidification Desalination System

Integration of Process Modeling, Design, and Optimization with an Experimental Study of a Solar-Driven Humidification and Dehumidification Desalination System

A Review of Humidification-Dehumidification Desalination Systems

Desalination process using humidification–dehumidification technique: A detailed review

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