Solar desalination with humidification–dehumidification cycle: Review of economics

Al‐Hallaj, Said; Parekh, Sandeep; Farid, Mohammed; Selman, J. R.

doi:10.1016/j.desal.2005.09.033

Cited by 103 publications

(31 citation statements)

References 31 publications

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“…Al-Hallaj et al [2] reported on a multiple-effect humidification process where the HDH process is utilized in conjunction with solar collection panels to provide the energy to heat the water. Some more recent work on solar-driven HDH processes have been reported by Al-Hallaj et al [3], Farid et al [4], and Orfi et al [5]. Parekh et al [6] provide a comprehensive review of the HDH process.…”

Section: Introductionmentioning

confidence: 94%

Diffusion‐driven desalination using waste heat in air streams

Knight

Klausner

et al. 2008

Int. J. Energy Res.

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SUMMARYRecently a diffusion-driven desalination (DDD) process has been described as a method for distilling mineralized water. Extensive studies have already examined the performance of the process using waste heat in water streams. This work focuses on the performance of the diffusion tower (evaporator) using waste heat in air streams. Both experimental and parametric investigations are included. It is observed that the evaporation process is very inefficient when heated air and ambient water are input to the diffusion tower. In contrast, efficient evaporation is achieved when both heated air and heated water are input to the diffusion tower. An industrial application is considered where a waste heat air stream at 828C is available and a recuperative heat exchanger is used to heat the feed water. It is found that the optimum operating conditions include an air mass flux of 1:5 kg m À2 s À1 ; an air to feed water mass flow ratio of 10 in the diffusion tower and a fresh water to air mass flow ratio of 2 in the direct contact condenser. At these operating conditions, a fresh water production efficiency of 0.22 and a specific energy consumption of 0:0012 kW h kg À1 can be achieved. The analytical model used to analyze the performance of the DDD process agrees well with the experimental measurements.

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Section: Introductionmentioning

confidence: 94%

Diffusion‐driven desalination using waste heat in air streams

Knight

Klausner

et al. 2008

Int. J. Energy Res.

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“…Solar powered humidification-dehumidification principle is evaporation of seawater and condensation of water vapor from the humid air in the unit at ambient pressure and at temperatures between 40°C and 85°C (Al-Hallaj et al, 2006). Simplicity of the set up made it popular in different parts of the world.…”

Section: Solar Desalinationmentioning

confidence: 99%

Application of Solar Energy in the Processes of Gas, Water and Soil Treatment

Pawłat¹,

Stryczewska²

2012

Solar Power

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“…Furthermore, the humidificationdehumidification desalination process is an attractive desalination process because of its simple layout and that it can be combined with solar energy. The combination of the humidification-dehumidification principle with solar desalination should result in an increase in the overall efficiency of desalination process that would make the solar desalination an even more promising method (Al-Hallaj et al, 2006). On the other hand, the large surface of the solar collectors (source of energy) and heat losses are the most significant deficiencies of such desalination process.…”

Section: Introductionmentioning

confidence: 99%

Experimental Efficiency Investigation on Heat Recovery System Used in a Solar-Powered Desalination Process

Rachdi¹

2012

Energy Research Journal

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The aim of this work is to experimentally study, the effect of the heat recovery on water production in a solar desalination process that is working with multiple stage humidification technique. The water production, the temperature and the humidity were tested for such a pilot plant, which operates without and with a heat recovery system. The humidifier efficiency increases with the number of the operating heat exchangers and cannot normally exceed 45% when the system operates without heat exchangers. The air temperature in the heat exchangers decreases by 41.1, 39.2 and 36°C respectively when the system operates with three heat exchangers, tow heat exchangers in the and only one heat exchanger. The number of the heat exchanger use for heat recovery system in such desalination pilot plant has a significant influence on the water productivity. In short, results show that such a pilot plant working without the use of a heat recovery system (heat exchangers) is unable to deliver the desirable minimal amount distilled water at the exit of the condenser. Furthermore, the optimum number of heat exchangers that should be used to upgrade the overall efficiency of the desalination plant is two.

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Solar desalination with humidification–dehumidification cycle: Review of economics

Cited by 103 publications

References 31 publications

Diffusion‐driven desalination using waste heat in air streams

Diffusion‐driven desalination using waste heat in air streams

Application of Solar Energy in the Processes of Gas, Water and Soil Treatment

Experimental Efficiency Investigation on Heat Recovery System Used in a Solar-Powered Desalination Process

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