Experimental investigation on the heat transfer enhancement of steam condensation on tube with hydrophilic-hydrophobic hybrid surface

Li, Huanmin; You, Zhuo; Zhang, Hao

doi:10.1088/1742-6596/2280/1/012059

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…It is obtained that the temperature of the liquid smoke begins to decrease in the simulation and is collected in the liquid collection chamber below, and the producer will be separated from the liquid smoke. The tube laminated by the hydrophobic film becomes condensed smoke or steam higher than the tube hydrophilic [14]. The wall roughness becomes an obstacle in optimizing the potential displacement provided by the wall tube.…”

Section: Materials and Volume Contentmentioning

confidence: 99%

“…The more the value of the average Q, the more efficiency will also increase because the average value is close to the maximum value, so the heat transfer process is higher between smoke and water. As the Prandtl number increase, it will reduce the thermal boundary layer thickness because the Prandtl number is the ratio of diffusivity momentums to thermal diffusion, and heat transfer will occur by fluid momentums [14]. With a result of 15%, it is considered sufficient to prove that the condenser is running correctly and there are no failures in software analysis, either welding leaks or other connections.…”

Section: Materials and Volume Contentmentioning

confidence: 99%

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Heat Effectiveness Analysis of Knock Down Smoke LCS (Liquid Collection System) Design with a Mixture of Ethylene Glycol and Water as Cooling Media

Ramadhan

Soedarsono

Riastuti

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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One of the methods commonly used to treat biomass waste, including rice husks, is pyrolysis and gasification, both of which produce smoke that can disturb the surrounding environment. This study aims to optimize the conversion process of smoke released in the pyrolysis process of rice husks into two products at once, namely liquid smoke and producer gas. This study designed a Liquid Collection System (LCS) with a shell and tube type knock-down condenser mechanism where the hot smoke is cooled so that the components of the condensed smoke (become liquid smoke) are separated from the non-condensable components (become producer gas). The composition of the LCS coolant, a mixture of Ethylene Glycol and Water, is simulated with the help of Computational Fluid Dynamics (CFD) software to optimize the heat transfer effectiveness value obtained. The simulation results show that the heat transfer efficiency of the volume variation of Ethylene Glycol in the mixture with the volume ratio of Ethylene Glycol and Water is 0:100, 10:90, 20:80, and 30:70 is 9.43%, 13.21%, 15.32%, and 15.43%, respectively. The highest efficiency value was obtained at the highest Ethylene Glycol content, which was a ratio of 30:70.

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Section: Materials and Volume Contentmentioning

confidence: 99%

Section: Materials and Volume Contentmentioning

confidence: 99%

Heat Effectiveness Analysis of Knock Down Smoke LCS (Liquid Collection System) Design with a Mixture of Ethylene Glycol and Water as Cooling Media

Ramadhan

Soedarsono

Riastuti

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…In the cold climate, frosting or snowing provides a major cause of traffic accidents due to the slippery road [3,4]. In addition, accreted ice on power towers, or railway contact wires will reduce electrical conductivity and sometimes cause extensive damage, creaating dangerous problems for engineers working below [5,6].…”

Section: Introductionmentioning

confidence: 99%

Anti-corrosion and icephobic approach on rose leaf biomimetic surface

Nguyen,

Trung,

Vinh

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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This study proposes a facile method for superhydrophobic and slippery-infused porous surfaces for water repellency and anti-icing purposes. Both adhesion force and time delaying were systematically investigated, showing their strong dependence on surface parameters and slipperiness. The uniform patterns of nanoscale textures inspired by rose leaf structure have been generated on silicon wafers using the plasma etching process. We believe the lower real contact area can play a dual role in the icing mechanism including reducing heat transfer and adhesion force attributed to the projected area. On the other hand, slipperiness plays an important role in reducing adhesion strength and preventing ice nucleation. The slippery superhydrophobic surface demonstrates outstanding in reducing the adhesion strength while documenting several times lower compared to bare Si, superhydrophobic Si, and slippery Si surfaces. In addition, the rational combination facilitates the efficient function after a number of test cycles, illustrating the mechanical anti-corrosion properties. The results lead to understanding the role of the icing process and designing the anti-icing structure.

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Enhancing Water Condensation on Hybrid Surfaces by Optimizing Wettability Contrast

Chi,

Nguyen

2024

Surfaces

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This study uses a hybrid concept to propose an optimal textured surface morphology for enhancing water condensation. The natural phenomenon-inspired morphology, which combined different degrees of wettability presented on the surface, documented their advantage in water harvesting compared to untreated surfaces. These superiorities might be explained by the appropriate combination of nucleation and water-driven ability facilitated by the superhydrophobic surrounding area. The uniform condensed droplets are effectively agglomerated to achieve the critical size. The best combination was found on a superhydrophobic-hydrophilic hybrid sample that improved water collection efficiency by up to 50% compared to bare Al. Condensation performance also illustrated an interesting tendency that revealed the great contribution of wettability on hydrophilic dots and the water-driven ability of the high-hydrophobicity area. The results were supported by a theoretical model which predicts the critical volume of a single droplet before it has departed from the surface. The findings reveal a good level of agreement between theory and real-time measurement, demonstrating the potential of combinations of hybrid samples to induce water collection efficiency.

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Experimental investigation on the heat transfer enhancement of steam condensation on tube with hydrophilic-hydrophobic hybrid surface

Cited by 3 publications

References 9 publications

Heat Effectiveness Analysis of Knock Down Smoke LCS (Liquid Collection System) Design with a Mixture of Ethylene Glycol and Water as Cooling Media

Heat Effectiveness Analysis of Knock Down Smoke LCS (Liquid Collection System) Design with a Mixture of Ethylene Glycol and Water as Cooling Media

Anti-corrosion and icephobic approach on rose leaf biomimetic surface

Enhancing Water Condensation on Hybrid Surfaces by Optimizing Wettability Contrast

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