Performance improvement of spray flash evaporation desalination systems using multiple nozzle arrangement

Fathinia, Farshid; Khiadani, Mehdi; Al-Abdeli, Yasir M.; Shafieian, Abdellah

doi:10.1016/j.applthermaleng.2019.114385

Cited by 20 publications

(2 citation statements)

References 31 publications

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“…According to Cheng et al [16], the nozzle affects the spray characteristics and heat transfer performance. Therefore, there is a great deal of work concerning the effect of various nozzle features, such as nozzle height [17], nozzle cross-section area [18], the number of nozzles [19], and many others, which can be found in [20], on heat transfer and overall nozzle performance.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nozzle Configuration on Adsorption-Chiller Performance

Kalawa,

Sztekler,

Kozaczuk

et al. 2024

Energies

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Broadly defined climate protection is a powerful incentive in the search for environmentally friendly refrigeration technologies. Adsorption chillers are considered to be one such technology; however, their main disadvantages include a low cooling capacity, a low energy efficiency ratio (EER), and cyclic operation. Thus, a great deal of effort is being put into improving adsorption-chiller performance. In this paper, the influence of the spray angle, the number of nozzles, and the water flow rate through the nozzles on adsorption-chiller performance was investigated. Adsorption-chiller performance was investigated mainly in terms of the cooling capacity (CC), the energy efficiency ratio (EER), and the specific cooling power (SCP). The results indicated that the chiller’s cooling capacity increased from about 210 W to 316 W and that the EER increased from 0.110 to 0.167 when the spray angle of the nozzles was increased from 90° to 120°. It was also reported that increasing the flow rate of water through the nozzles did not improve the average cooling capacity or the other performance parameters but resulted in more stable operation of the chiller. Additionally, using six nozzles instead of three improved the average cooling capacity and EER tenfold.

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Section: Introductionmentioning

confidence: 99%

The Effect of Nozzle Configuration on Adsorption-Chiller Performance

Kalawa,

Sztekler,

Kozaczuk

et al. 2024

Energies

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show abstract

“…Abbaspour, et al [13] designed a natural vacuum system with solar evacuated tube collectors which proves that the increased vacuum level improves the water production and system efficiency. Fathinia, et al [14] investigated that when injection pressure decreased from 6 bar to 0.25 bar, the evaporation rate is increased by at least 66.7%. Furthermore, flash evaporation process is also influenced by inlet feed water mass flowrate, nozzle diameter, injection direction and relative humidity reported by Miyatake, et al [15], Ikegami, et al [16] and Chen, et al [17].…”

Section: Introductionmentioning

confidence: 99%

A waste cryogenic energy assisted freshwater generator for marine applications

Liu

Tsolakis

et al. 2021

Desalination

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Numerical simulation on the pressure, turbulence, and λ2 vortex characteristics within the annular symmetric jet process under different vacuum degrees

Chai,

Hu,

Gao

et al. 2024

Asia-Pacific J Chem Eng

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The jet impingement flash technology represents a paramount research subject in the domain of heat and mass transfer. To augment its commercial potential, the conjunction of annular multi‐aperture jet impingement with negative pressure flash evaporation is introduced in this study. The employment of an annular nozzle array is integral to the enhancement of the heat and mass transfer efficiency between the phases. The Realizable k‐ε model is used in this study. The negative pressure flash vaporization model was also developed by introducing a mass source term and an energy source term based on the Mixture model. The flow characteristics are characterized using numerical simulation. Additionally, the λ2 vortex identification criterion is investigated the vortex structure. The simulation results exhibit good agreement with experimental findings, demonstrating that a higher initial vacuum leads to a stronger flashing effect and a more chaotic movement of the flow group within the flow field. Thus, this study provides a reference method for the structural design and optimization of annular symmetric jet impingement negative pressure deammonia chemical equipment for engineering applications.

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Performance improvement of spray flash evaporation desalination systems using multiple nozzle arrangement

Cited by 20 publications

References 31 publications

The Effect of Nozzle Configuration on Adsorption-Chiller Performance

The Effect of Nozzle Configuration on Adsorption-Chiller Performance

A waste cryogenic energy assisted freshwater generator for marine applications

Numerical simulation on the pressure, turbulence, and λ2 vortex characteristics within the annular symmetric jet process under different vacuum degrees

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