Design and demonstration of multiport cylinder dryer : final report on the multiport dryer project in phase 1.

Choi, Seungyeong; Yu, Wenhua; Wambsganss, M.W.; Chien, T.H.; Harkness, J. R.; Barde, D. K.; Vallance, W. D.; Stewart, Charles W.; Timm, J. L.

doi:10.2172/789673

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…7–10 Although these improvements have a certain effect on improving the heat transfer efficiency of the dryer, they do not fundamentally solve this problem. In view of this, the Argonne National Laboratory 11–13 proposed a new type of multichannel drying cylinder, as shown in Figure 1, which has many small rectangular channels in the circumferential direction of its inner wall and in which steam condenses and releases heat in the channel to generate condensed water. The condensed water is pushed out by the subsequent steam in the channel, and there is no water in the drying cylinder, which fundamentally solves the disadvantages of the traditional drying cylinder.…”

Section: Introductionmentioning

confidence: 99%

“…Choi et al. 32 studied one of the channels of the multichannel dryer. It is believed that in comparisons with traditional dryers, when single-sided condensation heat transfer is performed in a multichannel dryer, the condensation heat transfer coefficient of steam can be increased by 7∼20 times.…”

Section: Introductionmentioning

confidence: 99%

“…[24][25][26][27][28][29][30][31] Research on the phenomenon of the single-sided heat transfer condensation of in the rectangular channel of a multichannel dryer is rare. Choi et al 32 studied one of the channels of the multichannel dryer. It is believed that in comparisons with traditional dryers, when single-sided condensation heat transfer is performed in a multichannel dryer, the condensation heat transfer coefficient of steam can be increased by 7$20 times.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experiment study on condensation heat transfer and pressure drop of steam flow inside rectangular tube with different aspect ratio

Yan

Ji-xian

Ren

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

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In this study, the condensation heat transfer coefficient and pressure drop of steam are obtained in small rectangular tubes with different aspect ratios. The experiments were carried out on three rectangular tubes with aspect ratios of 1:2, 1:3 and 1:5, with mass flux between 25 and 45 kg/m2s, and vapor qualities between 0.1 and 0.8. The experimental data were analyzed to determine the effect of vapor quality, mass flux, and aspect ratio on the heat transfer coefficient and pressure drop. The results showed that the effect of aspect ratio on condensation heat transfer coefficient appears to be dependent on the flow pattern. For stratified flow, the condensation heat transfer coefficient increases as the mass flux increases. For annular flow, the condensation heat transfer coefficient hardly changed. The pressure drop always increases as the aspect ratio increases. Previous studies on round tube heat transfer and pressure drop correlations have not successfully predicted the small rectangular tube data; therefore, modified Shah correlation and Lockhart & Martinelli correlation are proposed, which predict the data with 20% and 23% RMS error, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experiment study on condensation heat transfer and pressure drop of steam flow inside rectangular tube with different aspect ratio

Yan

Ji-xian

Ren

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

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show abstract

“…To increase the drying rate and the productivity of papermaking machine, and improve the running stability of the drying cylinder, it is necessary to develop a brand-new cylinder to effectively reduce the thermal resistance and enhance the coefficient of heat transfer. In principle, a multi-channel drying cylinder makes steam flow through many tiny "ports" [3,4] (Fig. 2),or longitudinally oriented passages.…”

Section: Introductionmentioning

confidence: 99%

On Structure and Heat-Transfer Mechanism for Multi-Channel Drying Cylinder of Energy-Saving Type

Dong

Zhang

Dang

et al. 2011

AMR

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In this paper, the authors explore the structure and operating mechanism of the energy- saving type multi-channel drying cylinder, which can be used in papermaking machine dryer section to effectively reduce the amount of condensate water, and tackle such problem as the water condensation in drying cylinder. This paper theoretically expatiates upon the heat transfer mechanism of the multi-channel drying cylinder of energy-saving type and verifies the theoretical results with numerical simulation approach, which proves that energy-saving type multi-channel drying cylinder can effectively improve the heat transfer efficiency, and increase the productivity of the papermaking machine while the drying cylinder is featured by high cost in manufacturing and non-uniformity in surface temperature because of its peculiarity of configuration, which need to be investigated and improved.

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Experimental study on condensation heat transfer characteristics of steam in rectangular channels rotating about a parallel axis

Wang

Ji-xian²,

Guo³

et al. 2022

Applied Thermal Engineering

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Design and demonstration of multiport cylinder dryer : final report on the multiport dryer project in phase 1.

Cited by 8 publications

References 4 publications

Experiment study on condensation heat transfer and pressure drop of steam flow inside rectangular tube with different aspect ratio

Experiment study on condensation heat transfer and pressure drop of steam flow inside rectangular tube with different aspect ratio

On Structure and Heat-Transfer Mechanism for Multi-Channel Drying Cylinder of Energy-Saving Type

Experimental study on condensation heat transfer characteristics of steam in rectangular channels rotating about a parallel axis

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