Performance optimization of solar multi-stage flash desalination process using Pinch technology

Hou, Shaobo; Zhang, Zhongjin; Zhong-zhou, Huang; Xie, Aixia

doi:10.1016/j.desal.2007.01.052

Cited by 23 publications

(4 citation statements)

References 11 publications

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“…Decreasing the temperature drop between effects can enable more latent heat recovery and increase the GOR. The GOR for multistage flash (MSF) operating between 30 and 100 °C can be theoretically improved from 7.5 to 17.5 by decreasing stage temperature differences from 8 to 4 °C . Decreasing the temperature between stages or effects can result in lower driving forces of heat transfer and may require larger heat transfer areas (e.g., capital). ,, This can be seen in a recent MED study where the number of effects was increased from 5 to 12 as the top brine temperature varied between 58 and 70 °C and resulted in decreasing temperature differences between effects.…”

Section: Gain Output Ratiomentioning

confidence: 99%

Challenges and Roadmap for Solar-Thermal Desalination

Zheng,

Cáceres González,

Hatzell

et al. 2023

ACS EST Eng.

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Decarbonizing desalination systems requires combining renewable energy technologies with desalination systems. Solar thermal desalination, which combines a thermal desalination system (e.g., distillation, multistage flash, etc.) with a concentrated solar system is attractive in geographic regions with an abundance of saline water and solar energy. However, the high economic cost and low efficiency limits its adoption. This review provides an overview of the techno-economic, materials, and performance challenges that need to be overcome to realize solar-desalination. The review describes the four most prominent pathways for overcoming thermodynamic and cost limitations present in current systems. Specifically, methodologies and approaches such as direct solar evaporation structures, low-cost thermal energy storage, solar cogeneration schemes for power and desalination, and solar hybrid desalination are discussed. These strategies can enable solar thermal desalination technologies that are resilient to intermittent solar energy.

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Section: Gain Output Ratiomentioning

confidence: 99%

Challenges and Roadmap for Solar-Thermal Desalination

Zheng,

Cáceres González,

Hatzell

et al. 2023

ACS EST Eng.

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“…In 2008, the efficiency enhancement of the solar multiple-stage flash (MSF) desalination process employing Pinch technology was considered by Shaobo et al [41], as shown in Figure 4. In this work, pinch analysis was used to study three distinct scenarios.…”

Section: Flash Distillation Multistage Solar Stillsmentioning

confidence: 99%

A Review of the Configurations, Capabilities, and Cutting-Edge Options for Multistage Solar Stills in Water Desalination

Rashid

Kaood

Al‐Obaidi

et al. 2023

Designs

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The desalination of saltwater is a viable option to produce freshwater. All the desalination processes are energy-intensive and can be carried out on a large scale. Therefore, producing freshwater using renewable energy sources is the most desirable option considering the current energy crisis and the effect that fossil-fuel-based energy has on our carbon footprint. In this respect, the tray-type still, one of several solar power desalination still varieties, is popular owing to its straightforward design, economic materials of construction, and minimal maintenance requirements, especially in isolated island regions with restricted energy and natural water supplies. The traditional tray-type solar power has a few drawbacks, such as the inability to recover latent heat from condensation, reduced thermal convection, a large heat capacity, and comparatively minimal driving power through evaporation. Therefore, the improvement of heat and mass transfer capabilities in tray-type stills has been the subject of many studies. However, there is a lack of a comprehensive review in the open literature that covers the design and operational details of multistage solar stills. The purpose of this paper is to present a thorough overview of the past research on multistage solar stills, in terms of configurations, capabilities, and cutting-edge options. In comparison to a unit without a salt-blocking formation, the review indicates that a multistage distillation unit may run continuously at high radiation and generate pure water that is around 1.7 times higher than a unit without a salt-blocking formation. The most effective deign is found to be “V”-shaped solar still trays that attach to four-stage stills, since they are less expensive and more economical than the “floor” (Λ-shape) design, which requires two collectors. Additionally, it can be stated that the unit thermal efficiency, solar percentage, and collected solar energy (over the course of a year) increase by 23%, 18%, and 24%, respectively, when the solar collectors are increased by 26% (at the constant inflow velocity of the water).

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“…It is reputably more pliant and can be easily transformed into different forms of energy such as electrical, mechanical or the thermic depending on the type of technique employed, to facilitate phase transition mechanisms processes. This, therefore, often makes it a renewable resource of interest for exploitation in desalination systems [122][123][124][125][126][127][128][129][130][131]. Integration of FO with solar energy resources can be a panacea to achieving a more energy efficient FO desalination process when efficiently harnessed.…”

Section: Solar Energy Integrated Fo Desalinationmentioning

confidence: 99%

Seawater Desalination: A Review of Forward Osmosis Technique, Its Challenges, and Future Prospects

2020

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Currently over 845 million people are believed to be living under severe water scarcity, and an estimated 2.8 billion people across the globe are projected to come under serious water scarcity by the year 2025, according to a United Nations (UN) report. Seawater desalination has gained more traction as the solution with the most potential for increasing global freshwater supplies amongst other solutions. However, the economic and energy costs associated with the major desalination technologies are considered intrinsically prohibitive largely due to their humongous energy requirements alongside the requirements of complex equipment and their maintenance in most cases. Whilst forward osmosis (FO) is being touted as a potentially more energy efficient and cost-effective alternative desalination technique, its efficiency is challenged by draw solutes and the draw solutes recovery step in FO applications alongside other challenges. This paper looks at the present situation of global water scarcity, and a brief leap into the major desalination technologies employed. A closer look at the key drivers of FO as a seawater desalination technique in their individual domain and its outlook as an technology are further highlighted.

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Performance optimization of solar multi-stage flash desalination process using Pinch technology

Cited by 23 publications

References 11 publications

Challenges and Roadmap for Solar-Thermal Desalination

Challenges and Roadmap for Solar-Thermal Desalination

A Review of the Configurations, Capabilities, and Cutting-Edge Options for Multistage Solar Stills in Water Desalination

Seawater Desalination: A Review of Forward Osmosis Technique, Its Challenges, and Future Prospects

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