Experimental study of a bubble basin intended for water desalination system

Halima, Hanen Ben; Frikha, Nader; Gabsi, Slimane

doi:10.1016/j.desal.2016.08.003

Cited by 13 publications

(6 citation statements)

References 11 publications

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“…The uncertainty for the CSS is 7.8%; for DSS-1, it is 5.4%, and for DSS-2, it is 17.4%. Compared to similar previous studies, the uncertainty in this study is within an expected range, since the uncertainty in other studies ranges from 3.6% [36] to 19% [27]. The research uncertainty in heat transfer should not exceed 25% [7].…”

Section: Uncertaintymentioning

confidence: 56%

Solar Still with an Integrated Conical Condenser

Mugisidi

Fajar

Syaiful

et al. 2023

CFDL

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A solar still requires only two processes: evaporation and condensation. In a solar still, evaporation occurs because of the pressure difference caused by the difference in the temperature of the water and that of the glass cover, while condensation occurs when the water vapour comes into contact with a surface cooler than its dew point. Condensers have been proven to effectively increase the productivity of solar stills. This study aims to compare the efficiency of two developed solar stills with integrated conical condensers to that of a conventional solar still; it also measures the effectiveness of the condenser. Three types of solar stills were used in this study: a conventional solar still (CSS), developed solar still 1 (DSS-1) and developed solar still 2 (DSS-2). All three stills were tested simultaneously. The three solar stills are all made of aluminium with a thickness of 3 mm. The software Ansys Fluent 18.2 was used to analyse the computational fluid dynamics in the stills. The results showed that the efficiency of the CSS, DSS-1 and DSS-2 were 23%, 36.5% and 46.4%, respectively. The freshwater yields of DSS-1 and DSS-2 were, respectively, 1.17 and 1.81 times greater than that of the CSS. These increases in the productivity of DSS-1 and DSS-2 are significantly influenced by the shape of the condenser integrated in these two solar stills; the effectiveness of this condenser was 85.57% and 91.25%, respectively, in DSS-1 and DSS-2. In a simulation, the condenser’s effectiveness was 99.85%.

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Section: Uncertaintymentioning

confidence: 56%

Solar Still with an Integrated Conical Condenser

Mugisidi

Fajar

Syaiful

et al. 2023

CFDL

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“…The measured data were provided as the program input. The obtained correlations are :

h_{G} . a = 593 * G^{1.45} * T_{w}^{0.91} * {Z_{normalw}}^{- 0.97}

and

K_{G} . a = 4.38 * 10^{- 2} * G^{2.15} * T_{w}^{2.21} * {Z_{normalw}}^{- 0.98}

…”

Section: Process Principles and Mathematical Modelingmentioning

confidence: 94%

“…The measured data were provided as the program input. The obtained correlations are [30]: (xii) The total solar radiation on a tilted glass cover with angle Φ is described by [31]:…”

Section: Parameter Symbol Value Unitmentioning

confidence: 99%

Numerical and experimental investigation of a modified solar basin using as a bubbler humidifier in humidification–dehumidification desalination system

Halima¹,

Frikha

Gabsi

2018

Env Prog and Sustain Energy

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This article presents a theoretical study and experimental validation of a new solar bubbler basin using as a humidifier in humidification–dehumidification desalination system. The prototype consists mainly of a simple solar basin, filled with water, through which air is forced to travel upwards in form of bubbles. A detailed mass and heat transfer analysis was elaborated to model the dynamic behavior of the new humidifier. It is through a comparison with the experimental data that the validity of the proposed model was tested. The simulation results have revealed that the humidification efficiency and the amount of evaporated water can reach 98% and 6 kg m−2 day−1, during the spring equinox. The effects of some operational parameters (water depth, inlet air temperature, and flow rate) were investigated. It was found that the inlet air temperature and flow rate have a significant effect on the water content difference in the humidifier. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 518–526, 2019

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“…Halima et al [31] Passing air under some experimental circumstances, bubbles pop through the basin's base to the saltwater.…”

Section: Methodsmentioning

confidence: 99%

“…The effect of transporting air bubbles via the base of the basin of a bubble humidifier to seawater was investigated by Halima et al [31] under different operational situations of airflow rate, input air temperature and humidity, water temperature and depth. The experimental apparatus is schematically represented in Figure 30.…”

Section: Review Of Air Bubble Injection In Water Desalination Systemsmentioning

confidence: 99%

An Examination of Air-Bubble Injection Mechanisms for Optimising Heat Transfer in Industrial Applications

Rashid,

Basem,

Al-Obaidi

et al. 2023

IJHT

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The optimisation of heat transfer, which is the transition of thermal energy from regions of high temperature to those of lower temperature, is a cornerstone in the field of thermal sciences and engineering. It is of vital importance to maximise energy efficiency, ensure system performance, and uphold operational reliability across numerous industrial applications. In this context, recent investigations have explored the modification of heat transfer rates through the turbulence induced by air-bubble injections. The technique has found application in heat exchangers, solar stills, and solar collectors, where it can be employed to either augment or attenuate heat transmission. The majority of the research has been dedicated to enhancing thermal efficiency, with both theoretical models and experimental data underpinning our current understanding. This review provides a critical analysis of over 45 studies from the literature, which have examined the implications of air bubble injection across various realms of industry, including heat exchangers, water desalination systems, solar collectors, and diverse media. Our analysis underscores the profound impact of heat transfer rates on process productivity, efficiency, and costeffectiveness across a gamut of applications. A range of industrial processes, such as cooling, heating, evaporation, and condensation, all rely heavily on efficient heat exchange. Enhancements in heat transfer rates hold the potential to curtail energy losses, reduce fuel consumption, and subsequently lower operational costs in industrial applications like solar thermal systems. Moreover, efficient heat transfer is pivotal in minimising temperature variations, thereby contributing to consistent outcomes.

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Experimental study of a bubble basin intended for water desalination system

Cited by 13 publications

References 11 publications

Solar Still with an Integrated Conical Condenser

Solar Still with an Integrated Conical Condenser

Numerical and experimental investigation of a modified solar basin using as a bubbler humidifier in humidification–dehumidification desalination system

An Examination of Air-Bubble Injection Mechanisms for Optimising Heat Transfer in Industrial Applications

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