Atmospheric water harvesting from low humid regions using tubular solar still powered by a parabolic concentrator system

Elashmawy, Mohamed; Alshammari, Fuhaid

doi:10.1016/j.jclepro.2020.120329

Cited by 92 publications

(12 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers used a variety of modifications to improve water production from the atmosphere, such as using a parabolic concentrator to concentrate solar radiation in a fixed point (Elashmawy & Alshammari, 2020), (Srivastava & Yadav, 2018), increasing the number of shelves (Kabeel, 2007), (William et al, 2015) or installing fins (Essa et al, 2020) inside the apparatus to increase the surface area of the apparatus as well as the amount of desiccant used within the device, and Gravels are used to raise the desiccant's operating temperature because they have a high solar absorptivity and specific heat, making them an excellent absorber of solar energy and thermal energy storage (William et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…TSS productivity and efficiency increased by 292.4 and 82.3 percent, respectively, whereas water production expenses were reduced by 25%. The proposed system was small, light, and transportable, allowing it to be used in deserts, remote locations, and isolated locations with no need for water (Elashmawy & Alshammari, 2020). The thermal performance of a 'double-slope half cylindrical basin solar still (DS-SHCBSS)' (Fig.…”

Section: Figure 7 Schematic Diagram Of the Apparatusmentioning

confidence: 99%

See 1 more Smart Citation

A Literature Review on Extraction of Potable Water from Atmospheric Air Using Solar Stills: Recent Developments

Danışmaz¹,

ALHURMUZİ²

2022

European Journal of Science and Technology

View full text Add to dashboard Cite

Drinking water and utility water are indispensable elements in meeting many vital needs, especially drinking, cooking and cleaning. Unconscious agricultural irrigation, pollution, and population growth cause water scarcity that humanity must cope with. As a result of global warming and climate change, especially the amount of potable water is decreasing, making it difficult to access clean water resources. The occupancy of drinking water sources decreases in high temperature seasons and some of them even disappear. This situation has made it necessary to search for alternative methods to obtain drinking water. One of these methods is to obtain potable water from atmospheric air containing high amounts of water. With the widespread use of this method, the scarcity of drinking water can be alleviated to a certain extent. In this study, the processes of condensing the water in the atmospheric air by using solar energy, which is a renewable energy source, and thus obtaining potable water are discussed. Efforts to increase the efficiency of obtaining potable water by using various absorbents and by various systemic solar still designs have yielded positive results. As a result of this literature review, the limits of the studies and their regional effectiveness were evaluated together. The effect of temperature, velocity, humidity of the atmospheric air and the amount of solar radiation on the process were evaluated. It has been concluded that certain desiccant materials with good water absorbers such as calcium chloride and silica gel can be used effectively in the processes of obtaining potable water from atmospheric air by developing correct designs. It has been demonstrated that high atmospheric air temperature, which is an important cause of water scarcity, can be converted from disadvantage to advantage by utilizing solar energy.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Figure 7 Schematic Diagram Of the Apparatusmentioning

confidence: 99%

A Literature Review on Extraction of Potable Water from Atmospheric Air Using Solar Stills: Recent Developments

Danışmaz¹,

ALHURMUZİ²

2022

European Journal of Science and Technology

View full text Add to dashboard Cite

show abstract

“…Many of the experimental and theoretical studies have been interested in solar distillation using tubular solar still. Elashmawy and Alshammari [6] investigated the action of tubular stills containing calcium chloride as a desiccant material for collecting water from ambient air. They discovered that the distillation rate was 0.51 liters per kilogram of calcium chloride.…”

Section: Introductionmentioning

confidence: 99%

Potential of tubular solar still with rectangular trough for water production under vacuum condition

et al. 2022

Self Cite

View full text Add to dashboard Cite

Water scarcity, energy scarcity, and demographic difficulties are all real concerns for many countries throughout the world. Due to the high solar intensities and long sunshine duration in Saudi Arabia, solar water desalination can be effectively utilized for obtaining fresh water. The aim of this paper is explore the potential of simple-design and plentiful rectangular trough in desalination under vacuum condition. Numerical analysis of the heat and mass transfer of tubular solar still (TTS) containing rectangular trough was performed. A two-dimensional code that solves the systems of equations for mass, momentum, concentration, and energy was developed and validated. The effect of the rib and the vertical elevation of the trough on heat and mass transfer were investigated. The numerical results showed that the distillation rate is significantly increased with the increase of the rib of the trough at a minimum of 19.78%. In addition, the distillation rate is increased at a minimum of 12.88% when the trough moves towards the upper side of the glass cover where the condensation takes place.

show abstract

“…Recently, many researchers were proposed different systems to enhance the efficiency of the atmospheric water harvesting process. Elashmawy and Alshammari 20 proposed using tubular solar still for AWH for arid regions. A parabolic concentrator system was used to activate the solar still to enhance its ability to evaporate water under low humid conditions.…”

Section: Introductionmentioning

confidence: 99%

A new solar atmospheric water harvesting integrated system using CPV/T – Stirling engine – Absorption cooling cycle and vapor compression refrigeration cycle

et al. 2021

View full text Add to dashboard Cite

Summary This research theoretically investigates the performance of a new integrated solar atmospheric water harvesting system. The system consists of a concentrated photovoltaic thermal unit (CPV/T) to capture solar radiation and produce electricity. The rejected heat is utilized to drive an alpha‐type Stirling engine and a single effect LiBr/H2O absorption cooling cycle (ACC). The power output of the Stirling engine and the CPV/T is used to drive a vapor compression refrigeration cycle (VCRC), whereas the cooling capacity of the cooling cycles is used to cool and dehumidify ambient air and generate potable water. Moreover, a heat recovery heat exchanger is employed to pre‐cool the supply air before entering the evaporator, thus increasing the water production rate. The model is validated and solved numerically. A parametric study is conducted to show the effect of a variety of ambient and operating conditions on the system's performance. The highest water production rate is found, as expected, to be in hot and humid climates where the solar radiation, the ambient temperature, and the relative humidity are high. The freshwater production exhibits a non‐monotonic behavior with increasing the air mass flow rate, and the maximum potable water production was identified. At solar radiation values of 0.6, 0.8, and 1 (kW/m2), the maximum water production was generated at air mass flow rate values of 1.6, 2.8, and 3.8 (kg/s), and the corresponding maximum water production were 13.37, 20.12, and 26.28 (L/h), respectively. It is found that this integrated system can produce up to 30 L/h under hot and humid ambient conditions, and pre‐cooling of the supplied air yields better performance under drier conditions. The proposed system is suitable for small‐scale applications where water demand is less than 180 L/day. It is found that the amount of electrical energy consumed per liter of produced water by this system is between 225 and 315 Wh/L approximately.

show abstract

Atmospheric water harvesting from low humid regions using tubular solar still powered by a parabolic concentrator system

Cited by 92 publications

References 30 publications

A Literature Review on Extraction of Potable Water from Atmospheric Air Using Solar Stills: Recent Developments

A Literature Review on Extraction of Potable Water from Atmospheric Air Using Solar Stills: Recent Developments

Potential of tubular solar still with rectangular trough for water production under vacuum condition

A new solar atmospheric water harvesting integrated system using CPV/T – Stirling engine – Absorption cooling cycle and vapor compression refrigeration cycle

Contact Info

Product

Resources

About