Expansion of mist jet generated by a special twin-fluid atomizer for CO<sub>2</sub>capture

Yao, Jiafeng; Kawahara, Akimaro; Sadatomi, Michio; Sakurai, Eichi; Furusawa, Shinji

doi:10.2495/aie120551

Cited by 7 publications

(13 citation statements)

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“…For the practical significance, the atomizer with the optimum specifications in the present study is effective against CO 2 capture in a closed room [29], air cooling in greenhouse [16], humidification in living room, etc.…”

Section: Discussionmentioning

confidence: 91%

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Yao

Furusawa²,

Kawahara

et al. 2014

Transactions of the Canadian Society for Mechanical Engineering

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Geometries are considered to have a great influence on the spray characteristics of atomizers. In the present study, we studied a prefilming twin-fluid atomizer patented by , in which liquid atomization is implemented by supplying compressed air alone into an internal mixing chamber, and water is automatically sucked by the negative pressure induced by an orifice. In the experiments, we studied spray characteristics influenced by the geometrical parameters, such as orifices in different opening area ratios and different shapes, porous rings with different porous diameters, and different atomizer sizes. Higher spray performance can be obtained by a small sized atomizer with a circular orifice in opening area ratio of 0.429 and a porous fiber ring with porosity of 25 µm. The present results provide a significant guidance for practical applications with different requirements of spray characteristics.

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Section: Discussionmentioning

confidence: 91%

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Yao

Furusawa²,

Kawahara

et al. 2014

Transactions of the Canadian Society for Mechanical Engineering

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“…To improve the absorption performance by the mist, we set a 0.5 mm thick light PET (Polyethylene terephthalate) propeller 50 mm below the atomizer exit. The propeller can rotate automatically by the air jet with mist because of small inertia moment [25], and 12ä42f óôõ05ïÝ]*+$ù RST%&26\b*+7Öî ×H2887897Öî*+9:7 8C&,;<=>2 8 9 a c? 0*+9:78C&@642789 7Ö0 9\78ABó x789CD} ÞE5FGH/Na93aba`p¡' "$1 9789ìí7/CD0EÞ*0N`9 78C& 9ab0`3I02J S¤0c f 134K0Ra93789L¹# ìaeMNO;P5±b88 9 a cd 5H bS¤0QRóô078\bp¡¬ae1W b010Sb…”

Section: Co2 Capture Effectmentioning

confidence: 99%

Geometrical Effects on Spray Performance of a Special Twin-fluid Atomizer without Water Power and its CO2 Absorption Capacity

Yao

Tanaka

Kawahara

et al. 2014

JAPANESE JOURNAL OF MULTIPHASE FLOW

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“…Fig. 3 shows the test apparatus for the twin-fluid type atomizer [4][5][6][7]. Air was supplied with a compressor after controlling the air volume flow rate, Q G .…”

Section: Test Atomizersmentioning

confidence: 99%

“…1 which is the twin-fluid type but has a merit because water is automatically sucked through a porous pipe by a negative pressure arisen downstream from the orifice in the mixer. Thus, the mixer can be operated with a lower electric power than the usual twin-fluid type, i.e., operable with a solar power [3][4][5][6][7][8]. The mixer is also usable as a micro bubble generator [9,10] when water is supplied and air is sucked.…”

mentioning

confidence: 99%

“…In our previous studies, a mathematical model to predict its hydraulic performance was proposed and validated [4], and better geometrical parameters were experimentally clarified [5][6][7][8], i.e., the diameter ratio of the orifice to the mixer pipe, the ratio of the outlet length from the porous pipe to the mixer pipe diameter, the geometry of the orifice, the whole size, and the CO 2 adsorption performance by the mists.…”

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confidence: 99%

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Air Purification Using Mists Generated by an Efficient Multi-fluid Mixer

Sadatomi¹,

Kawahara²,

Kawasaki³

2016

JEPE

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Sadatomi and Kawahara developed a special twin-fluid atomizer called a multi-fluid mixer, which can spray mists by supplying air alone because water is automatically sucked by a vacuum pressure arisen inside the mixer. In the present paper, firstly, some applications of the mists sprayed by the atomizer are described. Secondly, the performance of the twin-fluid atomizer with best performance was compared with those of the commercial twin-fluid MMA100 type together with the single-fluid swirl type. In the CO 2 adsorption tests, mists were sprayed five minutes by the respective types in turn in a test room, and time variations of CO 2 concentration in air after the introduction of CO 2 in the room were measured at the bottom of the room to compare the CO 2 adsorption rates by the mists for the respective cases. In addition, diameters of droplets for the respective types were measured with a microscope. As a result, superiority of our twin-fluid atomizer was confirmed, because 40% droplets were 20 to 40 μm in diameter, and the CO 2 adsorption rate by the mists with our twin-fluid atomizer was 25% higher than that with the commercial ones.

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Expansion of mist jet generated by a special twin-fluid atomizer for CO₂capture

Cited by 7 publications

References 0 publications

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Geometrical Effects on Spray Performance of a Special Twin-fluid Atomizer without Water Power and its CO2 Absorption Capacity

Air Purification Using Mists Generated by an Efficient Multi-fluid Mixer

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Expansion of mist jet generated by a special twin-fluid atomizer for CO2capture

Cited by 7 publications

References 0 publications

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Influence of Some Geometrical Parameters on the Characteristics of Prefilming Twin-Fluid Atomization

Geometrical Effects on Spray Performance of a Special Twin-fluid Atomizer without Water Power and its CO2 Absorption Capacity

Air Purification Using Mists Generated by an Efficient Multi-fluid Mixer

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Product

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Expansion of mist jet generated by a special twin-fluid atomizer for CO₂capture