Laminar Flow Heat Transfer in Helical Oval-Twisted Tube for Heat Exchanger Applications

Almasi‐Hashiani, Amir; Wahlquist, Scott; Yoon, S. D.; Sabharwall, Piyush

doi:10.5098/hmt.18.35

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…To study the temperature field, it is first necessary to analyze the corresponding heat transfer processes, including convective and radiant heat transfer processes. Previously, some scholars have studied the radiation and convective heat transfer processes of some thermal equipment (Wahlquist et al, 2022;Prasad et al, 2022). Zabolotsky (2011) proposed a method for calculating the temperature field of the casting ladle lining by a modified relaxation method.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Om Heat Transfer of Multi-Layer Ladle in Empty and Heavy Condition

Su¹,

Fang²,

Zhang³

et al. 2023

Front. Heat Mass Transf.

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Taking the ladle used by a factory as an example, a three-dimensional finite element model of the ladle was established, and the temperature distribution law of the lining during the ladle transportation was studied using the finite element analysis software ANSYS, which verified the good thermal insulation performance of the nano thermal insulation layer, and analyzed and compared the temperature and distribution law of the refractory lining under the two working conditions of the heavy ladle and the empty ladle. The results show that due to the change of the boundary conditions in the empty ladle state, the temperature change trend of the working layer and slag line layer along the thickness direction changes, but the overall temperature distribution of other layers does not change much; The temperature of the inner liner generally tends to be high inside and low outside, with a large temperature gradient along the radial direction. Therefore, during the production process, it is necessary to try to avoid sharp changes in the temperature of the inner liner, and regularly maintain the refractory materials to extend the service life of the ladle.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation Om Heat Transfer of Multi-Layer Ladle in Empty and Heavy Condition

Su¹,

Fang²,

Zhang³

et al. 2023

Front. Heat Mass Transf.

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“…Industrial activities that consume a large proportion of energy resources have captivated the consideration of many researchers. As a result, enhancing thermal efficiency has emerged as one of the most pressing issues (Promvonge 2008;Bergles 2002;Datt et al 2019;Ali et al 2022 ). Traditional heat exchangers with smooth tubes have a low and inefficient thermal performance, making them unsuitable for reducing energy use and increasing economic gains.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Characteristics of Water Flow Into a Dimpled Tube Heat Exchanger: A Parametric Study

Ali¹,

Shehab²

2022

Front. Heat Mass Transf.

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In this study, the hydrothermal water flow characteristics using a dimpled inner tube heat exchanger are investigated experimentally and numerically.A numerical analysis has performed on two types of dimpled tubes (In-lined and staggered distributions) for two distribution angles 60 o and 90 o , and two dimple diameters (4 mm and 6 mm) with constant pitch ratio (X/d=8). In experimental part, a staggered arrangement dimpled inner tube distribution with angle 60 o , dimple diameter of 6 mm and constant pitch ratio (X/d=8)is used as well as plain tube. The results illustrate that the heat transfer as Nusselt number for case of staggered dimpled inner tube improved between 7.55 and 11.2 times than plain tube. The numerical results demonstrate that staggered distribution of dimpled inner tube improve the Nusselt number nearly with 50% bigger than that the in-line distribution dimpled tube. The thermal performance factor (TPF) varied from 1.67 to 5.22 for tubes with in-line arrangement while from 4.91 to 8.633 for dimple tubes with a staggered arrangement.

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Laminar Flow Heat Transfer in Helical Oval-Twisted Tube for Heat Exchanger Applications

Cited by 2 publications

References 20 publications

Numerical Simulation Om Heat Transfer of Multi-Layer Ladle in Empty and Heavy Condition

Numerical Simulation Om Heat Transfer of Multi-Layer Ladle in Empty and Heavy Condition

Hydrothermal Characteristics of Water Flow Into a Dimpled Tube Heat Exchanger: A Parametric Study

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