Numerican analysis of an integrated desalination unit using humidification-dehumidification and subsurface condensation processes

Okati, Vahab; Farsad, Saeed; Behzadmehr, A.

doi:10.1016/j.desal.2017.12.029

Cited by 27 publications

(4 citation statements)

References 24 publications

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“…Thus, the review showed Table. 2 states that this technique is only viable if the hotel's water demand is small or the hotel owns vast amount land to install the plant and increase the production of water. The papers in the Table 3 [12,19,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] respond to the proposal in a negative way. A. Cipollini states that this method is used in areas where they require a short demand of water [15].…”

Section: Results Analysis and Discussionmentioning

confidence: 99%

“…The simplest form of the HDH process Fig. 1 consists of three subsystems: (a) air and/or water heater, which can use various sources of heat, such as solar, thermal, or combinations of these; (b) humidifier or evaporator; and (c) dehumidifier or condenser [24,28,32]. was made, where 8 systems, the simplest form of the HDH process, two of them present a cogeneration, one by hybrid humidification-dehumidification water desalination and air conditioning system and the remaining 4 have HDH systems have been called "multi -effect humidification "(MEH) where the heat can be used many times to produce vapor.…”

Section: Related Workmentioning

confidence: 99%

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Solar HDH Desalination for Coastal Hotels: Literature Review and Research Trend

et al. 2019

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Water is essential for the hotel industry, its disposition is key to ensure the viability of the tourism sector that grows disproportionately day by day plus the scarcity of water in the world, this situation forces hotels to find alternatives to meet the demand for water. One of the preferred alternatives is solar water desalination. The purpose of this paper is to demonstrate through this first literature review whether solar desalination is a viable technique to meet the demand of potable water in a medium-sized hotel in a coastal area. We conducted a review of the literature published between 1987 and 2018, the subject of which is solar HDH desalination. Inclusion and exclusion criteria were formulated and applied to determine the most relevant studies to achieve the purpose of this research. The review found that solar desalination can be feasible to apply in hotels if they have large amounts of land for installation or the demand for water is not large. However, there are more economic methods to desalinate water while at the same time producing more water with similar sizes of facilities. Such results have practical implication for the use of the systems of hotels in general.

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Section: Results Analysis and Discussionmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Solar HDH Desalination for Coastal Hotels: Literature Review and Research Trend

et al. 2019

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“…Okati et al [64] carried out a thermodynamic analysis of a solar HDH system with subsurface condensation technology, which showed promising potential for underground irrigation. In this system, humid air was directed into an underground condensation space, where its thermal energy was transferred to buried tubes, leading to condensation and producing freshwater.…”

Section: Dehumidifiermentioning

confidence: 99%

Enhanced Humidification–Dehumidification (HDH) Systems for Sustainable Water Desalination

Luberti,

Capocelli

2023

Energies

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Water scarcity is a pressing global issue driving the need for efficient and sustainable water reuse and desalination technologies. In the last two decades, humidification–dehumidification (HDH) has emerged as a promising method for small-scale and decentralized systems. This paper presents a comprehensive review of recent scientific literature highlighting key advancements, challenges, and potential future directions of HDH research. Because the HDH process suffers from low heat and mass transfer, as well as thermodynamic limitations due to the mild operating conditions, this work indicates three main strategies for HDH enhancement: (1) Advanced Heat and Mass Transfer Techniques, (2) Integration with Other Technologies, and (3) Optimization of System Operative Conditions. Particularly for advanced HDH systems, the reference GOR values exceed 3, and certain studies have demonstrated the potential to achieve even higher values, approaching 10. In terms of recovery ratio, there appear to be no significant process constraints, as recycling the brine prepared in innovative schemes can surpass values of 50%. Considering electricity costs, the reference range falls between 1 and 3 kWh m–3. Notably, multi-stage processes and system couplings can lead to increased pressure drops and, consequently, higher electricity costs. Although consistent data are lacking, a baseline SEC reference value is approximately 360 kJ kg–1, corresponding to 100 kWh m–3. For comparable SEC data, it is advisable to incorporate both thermal and electric inputs, using a reference power plant efficiency of 0.4 in converting thermal duty to electrical power. When considering the utilization of low-temperature solar and waste heat, the proposed exergy-based comparison of the process is vital; this perspective reveals that a low-carbon HDH desalination domain, with II-law efficiencies surpassing 0.10, can be achieved.

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“…Many researchers believe that solar energy is highly promising renewable energy compared to fuel. [1][2][3][4]. Solar stills (used to produce distilled water) are one of the main options offering sustainable tool for producing freshwater from solar energy.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Analysis of Solar Still with Integrated Built-in Condenser

Ibrahim¹,

Ahmed²

2018

IJET

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Water scarcity is one of the most important problems in Middle East and North Africa. Many researchers believe that solar distillation is the best solution to solve water scarcity, especially since these areas are characterized by abundant solar energy most days of the year. One of the main disadvantages of solar distillates is the low rate of production and therefore the research focuses on the factors that many enhance and improve the rates of production of the solar stills. In this paper, the performance of a passive built in condenser incorporated into a solar still is studied theoretically and experimentally using. A theoretical framework is developed to forecast the productivity performance (accumulated and hourly), the temperatures of the various elements of the stills. The theoretical and experimental results were compared together and discussed thoroughly. Both theoretical and experimental results were in good agreement. The behaviors of both agree well with each other and have similar trends.

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Numerican analysis of an integrated desalination unit using humidification-dehumidification and subsurface condensation processes

Cited by 27 publications

References 24 publications

Solar HDH Desalination for Coastal Hotels: Literature Review and Research Trend

Solar HDH Desalination for Coastal Hotels: Literature Review and Research Trend

Enhanced Humidification–Dehumidification (HDH) Systems for Sustainable Water Desalination

Theoretical and Experimental Analysis of Solar Still with Integrated Built-in Condenser

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