Different Type Tube Bundle Heat Transfer to Vertical Foam Flow

Gylys, J.; Sinkunas, S.; Zdankus, T.; Giedraitis, Vidmantas

doi:10.1115/icnmm2007-30070

Cited by 2 publications

(5 citation statements)

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“…This work is an extension of our previous works [7][8][9]. Heat transfer from four in-line tube bundles with different types of geometries to the vertical upward statically stable foam flow was investigated experimentally.…”

Section: Introductionmentioning

confidence: 85%

“…Heat transfer intensity of the tubes located at the different places across and along the in-line tube bundle to vertical upward foam flow was investigated experimentally. In the foam flow case heat transfer intensity of the different tubes is under the influence of distribution of local flow velocity and local foam void fraction across and along the channel [8,9]. The third factor which influences the heat transfer intensity of tubes is the foam structure.…”

Section: Resultsmentioning

confidence: 99%

“…Investigation was performed on the experimental set-up consisting of experimental channel, foam generator, in-line tube bundle, gas and liquid flow meters, liquid storage reservoir, compressor, electric current transformer and stabilizer [7][8][9]. Cross section of the channel had dimensions (0.14 x 0.14) m 2 ; height of experimental channel was 1.8 m.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Statically stable foam (one type of aqueous foam) was used for experiments [7][8][9]. Foam-able liquid for the statically stable foam generation was produced from water solution with the detergents.…”

Section: Experimental Set-upmentioning

confidence: 99%

See 3 more Smart Citations

Peculiarities of heat transfer from in-line tube bundles to upward aqueous foam flow

Gylys¹,

Sinkunas²,

Sundén³

et al. 2008

WIT Transactions on Engineering Sciences

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Four in-line tube bundles with different geometry were investigated for establishing their performance in terms of heat transfer enhancement. Two-phase aqueous foam was used as a coolant. Such coolant was considered, because our previous research showed that large heat transfer intensity may be reached even at small mass flow rate of the foam. Spacing among the centres of the tubes across the first in-line tube bundle was 0.03 m and spacing along the bundle was 0.03 m. In the second case spacing among the centres of the tubes across the bundle was 0.03 m; spacing along the bundle was 0.06 m. In the third case spacing was accordingly 0.06 and 0.03 and in the last case spacing was accordingly 0.06 m and 0.06 m. During an experimental investigation it was determined a dependence of heat transfer intensity on flow parameters

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Section: Introductionmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Experimental Set-upmentioning

confidence: 99%

Section: Experimental Set-upmentioning

confidence: 99%

See 2 more Smart Citations

Peculiarities of heat transfer from in-line tube bundles to upward aqueous foam flow

Gylys¹,

Sinkunas²,

Sundén³

et al. 2008

WIT Transactions on Engineering Sciences

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show abstract

“…Next experimental series with staggered tube bundle [5,6] and in-line tube bundles of different geometry [7][8][9] in upward and downward after 180-degree turning foam flow followed.…”

Section: Introductionmentioning

confidence: 99%

Tube bundle’s cooling by aqueous foam

Gylys¹,

Sinkunas²,

Zdankus³

et al. 2009

Computational Methods in Multiphase Flow V

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Single-phase coolants, such as water, oil or air, are mostly used in industrial apparatus. But usage of two-phase coolants, such as aqueous foam, can significantly reduce material and energy expenditures, simultaneously sustaining proper heat transfer intensity on heated surfaces. Comparing with single-phase coolant, the two-phase foam coolant has additional possibility to change the intensity of heat transfer by changing volumetric void fraction of foam. This enables wider range of regulation of heat transfer intensity. An experimental investigation of heat transfer between in-line tube bundle and aqueous foam flow was performed. One type of aqueous foam -statically stable foam -was used as a coolant. Vertically downward moving foam flow crossed the in-line tube bundle. Spacing between the centres of the tubes across the in-line tube bundle was 0.03 m and spacing along the bundle was 0.03 m. During an experimental investigation it was determined dependence of heat transfer intensity on flow parameters: flow velocity, volumetric void fraction and liquid drainage from foam. Apart of this, influence of tube position in the bundle on heat transfer was investigated. Experimental results were summarized by criterion equations, which are suitable for the design and calculation of foam apparatus. Mentioned experiments are the continuation of our previous investigation with foam flow moving downward after 180-degree turning.

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Different Type Tube Bundle Heat Transfer to Vertical Foam Flow

Cited by 2 publications

References 0 publications

Peculiarities of heat transfer from in-line tube bundles to upward aqueous foam flow

Peculiarities of heat transfer from in-line tube bundles to upward aqueous foam flow

Tube bundle’s cooling by aqueous foam

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