An improved void fraction model for two-phase cross-flow in horizontal tube bundles

Feenstra, Paul; Weaver, David; Judd, R. L.

doi:10.1016/s0301-9322(99)00118-4

Cited by 88 publications

(40 citation statements)

References 10 publications

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“…Bamardouf and McNeil [13] investigated the relevant available pressure drop data for one-dimensional flow across tube bundles and recommended that, for kettle reboilers, the tube friction factor be evaluated from ESDU [14], the void fraction from Feenstra et al [15] and the two-phase multiplier from Ishihara et al [16]. It is assumed that the flow enters the base of a column of tubes as a saturated liquid.…”

Section: The One-dimensional Modelmentioning

confidence: 99%

Investigation of flow phenomena in a kettle reboiler

McNeil

Bamardouf

Burnside

et al. 2010

International Journal of Heat and Mass Transfer

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Section: The One-dimensional Modelmentioning

confidence: 99%

Investigation of flow phenomena in a kettle reboiler

McNeil

Bamardouf

Burnside

et al. 2010

International Journal of Heat and Mass Transfer

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“…[11], Xu et al [13] and the homogeneous model, described by Collier and Thome [18] for horizontal flow. The methods proposed by Feenstra et al [10], Schrage et al [11], Dowlati et al [12], Xu et al [13] and the homogenous model were considered for void fraction estimative, and therefore for the gravitational pressure drop parcel evaluation. In this table, the absolute percentage of data predicted within ±30% of error band γ 30 and the mean absolute error ε are presented.…”

Section: Resultsmentioning

confidence: 99%

“…The void fraction α is evaluated based on predictive methods available in the literature (Feenstra et al [10], Schrage et al [11], Dowlati et al [12], Xu et al [13] and the homogenous model).…”

Section: Data Reductionmentioning

confidence: 99%

Two-phase pressure drop during upward cross flow in triangular tube bundle

Kanizawa

Ribatski

2014

MATEC Web of Conferences

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Abstract. This paper presents experimental results for pressure drop during air-water upward two-phase flow across horizontal triangular tube bundle. It is estimated that more than half of shell-and-tube heat exchangers in industry operate under two-phase flow conditions in the shell side. However the number of research and publications focused on external flow is considerably reduced when compared to intube flow. This study addresses experimental results for pressure drop during external flow of air and water mixtures across a triangular tube bundle counting with 19 mm OD tubes and 24 mm transverse pitch, for superficial velocities up to 0.553 and 10 m/s for water and air, respectively. For reduced mass velocities, the gravitational pressure drop parcel is dominant, consequently the adoption of an appropriate methodology for void fraction estimative is essential for accurate estimative of the gravitational pressure drop parcel. The experimental results are compared with predictive methods available in the open literature, and an analysis of this comparison is presented.

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“…Recent advancements in void fraction predictions offered a good basis for pressure drop and heat transfer predictions. Among the accurate models for void fraction prediction is the one presented by Feenstra et al (2000). The currently proposed void fraction model (Equation (32)) is an adaptation from the Feenstra, Weaver, and Judd model.…”

Section: Modelmentioning

confidence: 99%

Convective boiling of R-134a on enhanced-tube bundles

Gorgy

Eckels

2016

International Journal of Refrigeration

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A B S T R A C TThe current paper presents the experimental investigation of the heat transfer performance and effect of tube pitch on highly enhanced surface tube bundles. The fluid-tube combination used was R-134a and the enhanced tube TBIIHP. Three pitch-to-diameter ratios were studied: 1.167, 1.33, and 1.5; all with a staggered triangle arrangement. Twenty enhanced tubes were used in each bundle; the tube outer diameter and length are 19.05 mm (3/4 inch) and 1 m (39.36 inch), respectively. Three input variables were investigated: heat flux (5-60 kW/m 2 ), mass flux (15-55 kg/m 2 .s), and quality (10-70%). The test saturation temperature was 4.44°C. A local method employing the EBHT technique was implemented in data reduction. All tube bundles showed strong dependency on heat flux. The smallest P/D bundle showed a considerably lower performance than the other two. When compared to the pool boiling performance, the smallest P/D bundle was lower while the other two showed a closer performance. The P/D 1.33 bundle outperforms P/D 1.167 bundle and provide quite similar performance to the P/D 1.5. When considering the refrigerant quantity, the P/D 1.5 bundle uses more refrigerant compared to the P/D 1.33; the latter proves to be the optimum.Finally, a new enhanced tube heat transfer coefficient bundle model was proposed based on the extensive data collected and the studied bundle phenomena.

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An improved void fraction model for two-phase cross-flow in horizontal tube bundles

Cited by 88 publications

References 10 publications

Investigation of flow phenomena in a kettle reboiler

Investigation of flow phenomena in a kettle reboiler

Two-phase pressure drop during upward cross flow in triangular tube bundle

Convective boiling of R-134a on enhanced-tube bundles

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