Experimental and numerical analyses of finned cross flow heat exchangers efficiency under non-uniform gas inlet flow conditions

Bury, Tomasz; Składzień, J.; Widziewicz, Katarzyna

doi:10.2478/v10173-010-0034-5

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…This heat exchanger has been the subject on investigations in [13] and partially in [14]. Papers [15] and [16] report the experiments made for steel heat exchangers with elliptical pipes (arranged in one and two rows) and rectangular fins.…”

Section: Test Facility and Selected Experimental Resultsmentioning

confidence: 99%

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Analysis of radiative heat transfer impact in cross-flow tube and fin heat exchangers

Hanuszkiewicz-Drapała

Bury

Widziewicz

2016

Archives of Thermodynamics

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A cross-flow, tube and fin heat exchanger of the water -air type is the subject of the analysis. The analysis had experimental and computational form and was aimed for evaluation of radiative heat transfer impact on the heat exchanger performance. The main element of the test facility was an enlarged recurrent segment of the heat exchanger under consideration. The main results of measurements are heat transfer rates, as well as temperature distributions on the surface of the first fin obtained by using the infrared camera. The experimental results have been next compared to computational ones coming from a numerical model of the test station. The model has been elaborated using computational fluid dynamics software. The computations have been accomplished for two cases: without radiative heat transfer and taking this phenomenon into account. Evaluation of the radiative heat transfer impact in considered system has been done by comparing all the received results.

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Section: Test Facility and Selected Experimental Resultsmentioning

confidence: 99%

“…These investigations have been conducted since 2001 and were reported in several publications [13][14][15][16]. Originally a typical car cooler has been analyzed.…”

Section: Test Facility and Selected Experimental Resultsmentioning

confidence: 99%

Analysis of radiative heat transfer impact in cross-flow tube and fin heat exchangers

Hanuszkiewicz-Drapała

Bury

Widziewicz

2016

Archives of Thermodynamics

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“…The experimental and computational studies on tube-and-fin heat exchangers with a cross flow of mediums realized in the Department of Thermal Technology (previously: Institute of Thermal Technology) of the Silesian University of Technology have shown that the inflow of working fluids to analysed heat exchangers can be non-uniform [7][8][9][10][11]. Although Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1. Sample air inlet velocity distribution (m/s) for the HE-1 heat exchanger Summarizing these investigations [7][8][9][10][11], it may be stated that the flow non-uniformity can substantially deteriorate the performance of the considered devices. The reduction in the total transferred heat, in comparison to a heat exchanger with a uniform inflow of the mediums, reached nearly 20% for some working modes [7][8][9]12].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis of a tube-and-fin cross-flow heat exchanger with a controlled non-uniform inflow of gas

Bury

Hanuszkiewicz-Drapała

2021

E3S Web Conf.

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The paper presents results of numerical and experimental analyses of a fin-and-tube air-water heat exchanger. The analysed device is a one-row heat exchanger with finned elliptical tubes. The aim of the analyses is to investigate the impact of a controlled non-uniform inflow of air on the heat exchanger performance. The heat exchanger was modelled numerically using the ANSYS Fluent program. The developed model was applied to simulate the heat exchanger operation in the conditions of the uniform inflow of air. Cases of an uncontrolled non-uniform inflow of gas were investigated experimentally, using a purpose-designed test station. On the experimental test station the effect of a controlled non-uniform air inflow was also achieved by placing appropriately shaped inserts in the air inlet duct, directing the air partially to the region of the water inlet header. By controlling the gas inflow, it was possible to significantly enhance the heat exchanger performance. The results of the multivariate numerical analyses conducted for the adopted parameters of the mediums (air and water volumetric flow rates and water temperature) show that the heat exchanger performance can be improved by up to almost 5% compared to a variant with a natural non-uniform air inflow taking place in the exchanger under consideration.

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“…In particular, a genetic algorithm was developed whose general solutions can be an effective tool for the design and control of heat exchanger networks. In the paper [2], experimental and numerical thermodynamic analyses of gas-liquid cross heat exchangers were performed. On the basis of the analyses, a significant effect of non-uniform air supply on the efficiency of the considered heat exchangers has been shown.…”

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confidence: 99%

Archives of Thermodynamics

Rup

2022

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In this paper, the logarithmic mean temperature difference method is used to determine the heat power of a tube-in-tube exchanger. Analytical solutions of the heat balance equations for the exchanger are presented. The considerations are illustrated by an example solution of the problem. In particular, the heat power of the tube-in-tube heat exchanger is determined taking into account the variants of work in the co-current and counter-current mode. Apart from the analytical solutions, appropriate numerical calculations in Matlab environment have been carried out.

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Experimental and numerical analyses of finned cross flow heat exchangers efficiency under non-uniform gas inlet flow conditions

Cited by 6 publications

References 5 publications

Analysis of radiative heat transfer impact in cross-flow tube and fin heat exchangers

Analysis of radiative heat transfer impact in cross-flow tube and fin heat exchangers

Numerical and experimental analysis of a tube-and-fin cross-flow heat exchanger with a controlled non-uniform inflow of gas

Archives of Thermodynamics

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