Thermal and fluid flow first-principles numerical design of an enhanced double pipe heat exchanger

Gorman, John M; Krautbauer, Kevin; Sparrow, E. M.

doi:10.1016/j.applthermaleng.2016.06.134

Cited by 47 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the basic model of the tank (V-04), as shown in Fig. 3, a the multi-pass tube heat exchanger is suitable for locating inside the tank [22]. The design process is started from the dimension and model of the tank V-04 (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Development of free water knock-out tank by using internal heat exchanger for heavy crude oil

2022

View full text Add to dashboard Cite

Reactivation of an old oil well can be explicitly calculated to maximize crude oil production. The biggest challenge with the activation process is the crude oil content in old wells, which is not feasible to meet the specified minimum standards. In the case of the Bunian oil field, Indonesia, the crude oil produced has high water content. It causes a decrease in the quality of production and also hinders production capacity. The production scheme applied to the Bunian field has a storage tank that functions to reduce water content using the gravity method, but this is less effective. Let’s modify the storage tank into a heat exchanger tank through the engineering design process and labeled it as a free water knockout tank (FWKO). The FWKO is made of a multi-pass tube heat exchanger. The experiments are conducted through three phases’ tests before deciding the final design. From the test, the change in water content is varied with temperature differences of the working fluid and crude oil. The lowest water content is obtained at 0.5 % at final tests. After analyzing the characteristic of each test result, the final design is taken by adjusting the suitable working fluid temperature and pressure. Finally, by using suitable parameters, the average water content of crude oil is decreased up to the minimum requirement (<0.1 %). The design of FWKO is considered simple with an excellent performance and can adapted easily. The FWKO able to process crude oil with water content <20 %, where it suitable for waxy oil well. The working fluid can be processed both in liquid and gas state. Furthermore, the heating source for the working fluid is gained from the gas flare by using thermic heater. Thus, it does not require an extra heating source for the heat exchanger

show abstract

Section: Methodsmentioning

confidence: 99%

Development of free water knock-out tank by using internal heat exchanger for heavy crude oil

2022

View full text Add to dashboard Cite

show abstract

“…They found that secondary and swirling flows are generated on the sides of the tube and shell, and the optimum geometric parameter is obtained at the shell diameter of 38 mm. A numerical investigation by Gorman et al [28] revealed that the heat transfer rate and the pressure drop of the helically corrugated DPHE were, respectively, three times and two times those of the simple smooth-walled DPHE. Qi et al [29] experimentally revealed that a DPHE with a corrugated tube has better overall performance than a DPHE with a smooth tube.…”

Section: Of 15mentioning

confidence: 99%

Heat Transfer Enhancement in a Novel Annular Tube with Outer Straight and Inner Twisted Oval Tubes

Luo,

Song,

Tagawa

et al. 2020

Symmetry

View full text Add to dashboard Cite

The thermal-hydraulic performance in a novel annular tube formed by outer straight and inner twisted oval tubes is numerically investigated. An annular tube formed by two straight oval tubes is also studied for comparison. Inner twisted oval tubes with different aspect ratios and twist ratios are studied. The heat transfer is well improved by the symmetrical secondary flow in the annulus. The Nusselt number generally increases when the inner oval tube becomes flatter and the twists stronger in the studied range of geometrical parameters. The largest Nusselt number Nu of the inner twisted tube increases by 116% while the friction factor f increases by only 46% compared with that of the inner straight tube, and the largest value of the thermal performance factor (JF) can be up to 1.9. Correlations of the Nusselt number and friction factor are proposed for laminar and turbulent flows, and the deviations of the correlations are within ±5% and ±4% for Nu and f, respectively.

show abstract

“…It is also suitable for high temperature and high pressure applications due to its small diameters. The literatures regarding these enhancements are primarily experimental in nature, with gases as working fluids [1,2].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe

Vijayaragavan¹,

Asok²,

Ganesh³

2023

Acta Polytech

View full text Add to dashboard Cite

An investigation on enhancement of heat transfer is carried out for a double pipe heat exchanger in which the outer wall of the inner pipe is provided with circumferential labyrinth passages. Rectangular and triangular cavities with fixed labyrinth tooth thickness, height, and pitch are considered and the effect of added labyrinth structures on the heat transfer characteristics is discussed. A two-dimensional steady numerical simulation is carried out using ANSYS-FLUENT software. The flow Reynolds number equals to 20 000 and 43 000 for the hot and cold fluids, respectively, while other fluid properties are constant. From the numerical analysis carried out in this work, it is identified that the added labyrinth passages in the heat exchange surface improve the heat transfer rate and can reduce the length of the heat exchanger. Numerical predictions agree well with the results obtained from the experiment conducted.

show abstract

Thermal and fluid flow first-principles numerical design of an enhanced double pipe heat exchanger

Cited by 47 publications

References 31 publications

Development of free water knock-out tank by using internal heat exchanger for heavy crude oil

Development of free water knock-out tank by using internal heat exchanger for heavy crude oil

Heat Transfer Enhancement in a Novel Annular Tube with Outer Straight and Inner Twisted Oval Tubes

Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe

Contact Info

Product

Resources

About