Liquid crystal technique application for heat transfer investigation in a fin-tube heat exchanger element

Wierzbowski, M.; Stąsiek, J.

doi:10.1016/s0894-1777(02)00143-7

Cited by 9 publications

(2 citation statements)

References 1 publication

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“…Experiment is often used to select the optimum fin pattern, but this kind of experiment is complex, expensive, and very difficult to carry out [3][4][5]. Moreover, the experimental measurement of the conjugate local heat transfer of a tube bank fin element is scarcely reported.…”

Section: Multi-domain Coupled Numerical Methods For Heat Exchanger 1205mentioning

confidence: 99%

A Multi-Domain Coupled Numerical Method for a Flat Tube Bank Fin Heat Exchanger with Delta-Winglet Vortex Generators

Lin

Wang

2014

Numerical Heat Transfer, Part A: Applications

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Along with the improvement of numerical methods and the development of computer power, using a numerical method to design a tube bank fin heat exchanger becomes increasingly possible. In real working conditions, the conjugate heat transfer process arises in this type of exchanger. To provide a feasible numerical model and its relevant method to properly assess the thermal performance of exchanger, in this article, a multi-domain coupled numerical method is presented, in which the conduction in solid regions and the convection in flow regions are calculated together with a fully coupled manner. The reliability of a numerical method was tested through comparing average numerical results with experimental results of a real heat exchanger. The results reveal that the multi-domain coupled numerical method can achieve more accurate positions of the interfaces, arrange the orthogonal grids close to the interfaces, and use more reasonable criteria of convergence. Thus, we have achieved reasonable results that agree with the experimental data of the real heat exchanger under the working condition within 10% deviation in the Reynolds number region studied, and got overall heat transfer coefficient of a flat tube bank fin heat exchanger.

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Section: Multi-domain Coupled Numerical Methods For Heat Exchanger 1205mentioning

confidence: 99%

A Multi-Domain Coupled Numerical Method for a Flat Tube Bank Fin Heat Exchanger with Delta-Winglet Vortex Generators

Lin

Wang

2014

Numerical Heat Transfer, Part A: Applications

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“…Experiments were carded out using the open, lowturbulence wind tunnels described for f'm-tube [1] and for corrugated-undulated f21 geometries in previous papers.…”

Section: Experimental Techniquementioning

confidence: 99%

Experimental and numerical simulations of flow and heat transfer in heat exchanger elements using liquid crystal thermography

2004

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Experimental and numerical investigation of heat transfer and fluid flow were conducted for classic heat exchanger elements (flat plate with f'm-tubes in-line, staggered and with vortex generators) and corrugated-undulated ducts under transitional and weakly turbulent conditions.The dependence of average heat transfer and pressure drop on Reynolds number and geometrical parameters was investigated. Distributions of local heat transfer coefficient were obtained by using liquid crystal thermography and surface-averaged values were computed. Three-dimensional numerical simulations were conducted by a finite-volume method using a low-Reynolds number k-e model under the assumption of fully developed flow. Computed flow fields provided otherwise inaccessible information on the flow patterns and the mechanisms of heat transfer enhancement.

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Experimental study on heat transfer enhancement of wavy finned flat tube with longitudinal vortex generators

Feng

Yang

et al. 2013

Applied Thermal Engineering

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Liquid crystal technique application for heat transfer investigation in a fin-tube heat exchanger element

Cited by 9 publications

References 1 publication

A Multi-Domain Coupled Numerical Method for a Flat Tube Bank Fin Heat Exchanger with Delta-Winglet Vortex Generators

A Multi-Domain Coupled Numerical Method for a Flat Tube Bank Fin Heat Exchanger with Delta-Winglet Vortex Generators

Experimental and numerical simulations of flow and heat transfer in heat exchanger elements using liquid crystal thermography

Experimental study on heat transfer enhancement of wavy finned flat tube with longitudinal vortex generators

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