Natural vacuum distillation technique—Part II: Experimental investigation

Midilli, Adnan; Ayhan, Teoman

doi:10.1002/er.969

Cited by 10 publications

(5 citation statements)

References 15 publications

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“…It can be noted thay the concept of barometric distillation has originated by Bemporad [19]. Al-Kharabsheh then developed a workable configuration through both theoretical and experimental studies [20,21]. Middilli and Ayhan also presented theoretical and experimental concepts for both natural draft condensation and forced condensation in two different studies [22].…”

Section: Discussionmentioning

confidence: 99%

Design and evaluation of sustainable low-temperature desalination systems

Gude

Martinez‐Guerra

2016

Proceedings of the 1st International Electronic Conference on Water Sciences

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: The need for freshwater can never be overstressed. Global agencies (including WHO, UNDP, UNICEF etc.) expect that 24 of the least developed countries need to improve their basic health, sanitation, and welfare. Desalination of available brackish or seawater sources is an ideal option for freshwater production. However, existing desalination technologies are energy-intensive and cost-prohibitive. This research article presents the evolution of an energy-efficient low temperature desalination process operated under natural vacuum created by barometric head.Principles of operation, theoretical analyses and experimental studies are discussed in detail with a brief overview of relevant research by other researchers.

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Section: Discussionmentioning

confidence: 99%

Design and evaluation of sustainable low-temperature desalination systems

Gude

Martinez‐Guerra

2016

Proceedings of the 1st International Electronic Conference on Water Sciences

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“…They observed that the production rate is lower than the theoretical model predicts. The theoretical and practical experiments yielded maximal freshwater production rates of 9.79 and 3.96 kg/h, respectively [10]. The experimental set-up used almost three times the amount of power predicted by the theoretical study.…”

Section: Introductionmentioning

confidence: 93%

“…The model was created with solar energy in mind. Midilli and Ayhan [10] built an experimental system based on the design provided by the theoretical model. Free and forced mass convection were used in the studies.…”

Section: Introductionmentioning

confidence: 99%

An efficient solar water desalination system using natural vacuum pressure

Al-Muylaba¹,

Dayem²

2022

J., eng., them. sci.

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An innovative design of a solar natural vacuum desalination (SNVD) system is proposed and investigated. To obtain a vacuum pressure in a desalination chamber its height is considered as 9.5 m. The waste heat in the system is efficiently utilized for both brine and distilled water. Seawater is preheated by the produced warm water, then, it is heated again by the outlet rejected hot brine before it is charged into the evaporation chamber. In addition, inlet pure water to a flat-plate collector is preheated by the condensation latent heat of the evaporated vapor from the evaporation chamber. Later, the outlet hot water from the collector is used as a heat source to the evaporation process. An optimum design of the system components was provided under the actual weather conditions for the shortest day of the year. It was found that the collector area is required to be 23 m2 to produce 66.6 liter of distilled water during. A mathematical modeling of the system was provided to establish a transient simulation and investigate the hourly performance of the system. Based on the annual performance of the system, the system can produce 76.5 liter of distilled water daily that is corresponding to 3.5 liter per one quadratic meter of collector. The annual average specific productivity of the system is obtained as 1.44 liter per kWh of solar radiation. Moreover, the maximum annual production is estimated as 92.88 liter of distilled water per day. Accordingly, the evaporation ratio (ER) is dependent on the solar irradiation and the annual average is found 0.0175 (or 1.75 %) where the gain output ratio (GOR) was estimated as 0.97 on yearly average basis.

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“…There were two variations in design, one was that they installed a 3 kW fan to draw vapors from evaporator to condenser chamber and other was their evaporator area was 0.16 m 2 . After doing a thermodynamic analysis with and without fan in operation, an experimental setup was built in 2007 [8]. The maximum fresh water production rates was 3.96 and 7.79 kg per hour measured experimentally and theoretically, respectively.…”

Section: Direct Evaporation Type Barometricmentioning

confidence: 99%

A Comparative Study of Evaporator Sizes and Condenser Temperatures used in Different Barometric Distillation Type Desalination Systems

Siddique¹,

Turkmen²,

Siddique³

et al. 2017

IJERT

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In the present time, drinking water shortages from natural sources has forced almost all the countries to think of desalination which uses less energy and least hazardous to ecosystem. Clean water scarcity is heightened in hot regions of the world especially in the Arabian Gulf, where desalination is the main source for meeting drinkable water demands. These countries are desalting seawater in a large amount and require cheaper techniques which could consume less energy. Barometric distillation type desalination is also such a unique concept which evolved few years back. It requires very small amount of energy with least maintenance but gives enough water to support a family for a day. This is specifically useful for remote areas where bigger plants are not feasible to install because of limited demand and non-availability of maintenance personnel. Many investigations have been done to understand different aspects of this innovative technique. In this process, barometric height of water column is used to create natural vacuum in the space above the water column. This generated vacuum makes desalination possible at low temperature and reduced pressure, which can be obtained from low level heat sources. This paper outlines a review of the two major factors that influence the production rate of freshwater in barometric distillation type desalination.

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Natural vacuum distillation technique—Part II: Experimental investigation

Cited by 10 publications

References 15 publications

Design and evaluation of sustainable low-temperature desalination systems

Design and evaluation of sustainable low-temperature desalination systems

An efficient solar water desalination system using natural vacuum pressure

A Comparative Study of Evaporator Sizes and Condenser Temperatures used in Different Barometric Distillation Type Desalination Systems

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