An experimental investigation and modelling of flow boiling heat transfer of isobutane-compressor oil solution in a horizontal smooth tube

Chen, G.M.; Zhelezny, Vitaly; Melnyk, A.V.; Shestopalov, Kostyantyn

doi:10.1016/j.ijrefrig.2015.06.012

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…The literature also presents different possibilities for intensification of heat transfer at boiling by using so called static promoters such as different form of bars, equidistantly placed on the plane horizontal heating surfaces, as well as different material particles, immersed in the boiling liquid [11]. Some authors present experimental results of local heat transfer coefficients for boiling of different fluids in a small diameter smooth tube [15], or in pool boiling on nanostructured surfaces [16][17][18][19][20], or the effect of concentration of nanofluids on pool boiling [19].…”

Section: Introductionmentioning

confidence: 99%

Glass packing materials used for intensification of heat transfer at boiling on tubular surfaces

Popa

Boran

2017

THERM SCI

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The paper presents the results obtained in determining the partial heat transfer coefficient at boiling on vertical and horizontal tubular surfaces surrounded by different types of glass packing material. In both cases, an intensification of heat transfer can be noticed as compared to the boiling on the same installation performed without glass packing materials. During the experiments pseudo-critical values of thermal flux appear on the vertical and horizontal heating tube with glass packing materials, and the boiling heat transfer coefficient, α, has lower critical values than that on nucleate ordinary boiling. This denotes a differential heating mechanism, determined by the presence of the glass package around the heating tube. The heat transfer intensification is greater with the horizontal tube than with the vertical one.

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Section: Introductionmentioning

confidence: 99%

Glass packing materials used for intensification of heat transfer at boiling on tubular surfaces

Popa

Boran

2017

THERM SCI

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“…The boiling heat transfer coefficients are used routinely in calculations and design of industrial boiling equipment. Many researchers calculate boiling heat transfer coefficients using different types of heat surface [22][23][24][25][26][27][28]. The literature also presents aspects regarding the control performances improvements [29,30].…”

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Heat transfer influence on fractionation in flooded packed columns

Popa¹,

Boran²,

Moșoarcă³

et al. 2019

Studia UBB Chemia

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In packed fractionation, the liquid phase can be forced to become continuous, and the vapor phase dispersed, realizing emulsification regime. The paper presents the efficiency comparing results of packed fractionation with respect to the fractionation in an empty flooded column, as well as the influence of the heat flux and of the temperature inside the column's jacket. Experiments for determining the boiling heat transfer of the different methanol-ethanol concentration mixtures were performed. The variation of the boiling heat transfer coefficient at different concentrations of methanol-ethanol mixtures has a minimum, corresponding to the maximum of the difference between concentrations of vapor phase in equilibrium with the liquid phase.

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Assessment of the low-GWP refrigerants R600a, R1234ze(Z) and R1233zd(E) for heat pump and organic Rankine cycle applications

Longo

Mancin

Righetti

et al. 2020

Applied Thermal Engineering

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An experimental investigation and modelling of flow boiling heat transfer of isobutane-compressor oil solution in a horizontal smooth tube

Cited by 6 publications

References 22 publications

Glass packing materials used for intensification of heat transfer at boiling on tubular surfaces

Glass packing materials used for intensification of heat transfer at boiling on tubular surfaces

Heat transfer influence on fractionation in flooded packed columns

Assessment of the low-GWP refrigerants R600a, R1234ze(Z) and R1233zd(E) for heat pump and organic Rankine cycle applications

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