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Assuming that a maldistribution of media flow may have significant meaning for a cross-flow heat exchanger performance it is important to determine the form and scope of this non-uniformity. Experimental investigations of this problem are conducted for over ten years at the Institute of Thermal Technology of the Silesian University of Technology by using a computer controlled thermoanemometric probe. This is a very invasive technique that applies properly only in laboratory conditions. As the infra-red thermography was applied at some stage of realized studies, the authors assume a possibility of applying this technique for evaluation of media flow maldistribution, qualitative assessment at least. The experiments performed for the case of a typical fin and tube water cooler have been described in this paper, as well as the most important conclusions.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
39--49
Opis fizyczny
Bibliogr. 13 poz., rys., tab.
Twórcy
autor
- Silesian University of Technology, Institute of Thermal Technology
autor
- Silesian University of Technology, Institute of Thermal Technology
Bibliografia
- [1] Ranganayakulu C h ., Seetharamu K.N., Sreevatsan K.V: The effects of inlet fluid flow nonuniformity on thermal performance and pressure drops in crossflow plate-fin compact heat exchangers. International Journal of Heat and Mass Transfer. 1996, Vol. 40, No. 1, pp. 27-38
- [2] Andrecovich M., Clarke R.: Simple modeling of flow maldistribution in plate-fin exchangers. Proceedings of the 21st HR International Congress of Refrigeration, Paper ICR0639, Washington DC, USA, August 17-22, 2003
- [3] SrihariN., D as S. K.: Transient response of multi-pass plate heat exchangers considering the effect of flow maldistribution. Chemical Engineering and Processing: Process Intensification. 2008, Vol. 47, No. 4, pp. 695-707
- [4] Mueller A.C.: Effects of some types of maldistribution on the performance of heat exchanger. Heat Transfer Engineering. 1987, Vol. 8, No. 2, pp. 75-86
- [5] Lalot S., Florent P., L ang S.K., Bergles A.E.: Flow maldistribution in heat exchangers. Applied Thermal Engineering. 1999, Vol. 19, No. 8, pp. 847-863
- [6] Shaji K., Das S. K.: The effect of flow maldistribution on the evaluation of axial dispersion and thermal performance during the single-blow testing of plate heat exchangers. International Journal of Heat and Mass Transfer. 2010, Vol. 53, No. 7-8,pp. 1591-1602
- [7] Rao B. P., Sunden B., D as S. K.: An experimental investigation of the port flow maldistribution in small and large plate package heat exchangers. Applied Thermal Engineering. 2006, Vol. 26, No. 16, pp. 1919-1926
- [8] Hoffmann -Vocke J., Neale J., Walmsley M.: The effect of inlet conditions on the air side hydraulic resistance and flow maldistribution in industrial air heaters. International Journal of Heat and Fluid Flow. 2011, Vol. 32, No. 4, pp. 834-845
- [9] Piątek R.: Thermal analysis of plate fin and tube heat exchanger with unequal inlet of media. PhD Thesis, Institute of Thermal Technology, Sielsian University of Technology, Gliwice, Poland, 2003. (in Polish)
- [10] Bury T., Składzień J., Hanuszkiewicz-Drapała M.: Experimental and numerical analyses of a non-uniform agents flow impact on a finned cross-flow heat exchanger effectiveness. Proceedings of the 22nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - ECOS 2009, on CD, Foz do Iguacu, Parana, Brasil, August 31 - September 3, 2009.
- [11] Bury T.: Impact of a medium flow maldistribution on a cross-flow heat exchanger performance. In: Heat exchangers - basic design applications. J. Mitrovic (Ed.), InTech, ISBN 978-953-51-0278-6, Rijeka, Croatia, March 2012.
- [12] Bury T., Kruczek T.: Application of infrared thermography for validation of numerical analyses results of a finned cross-flow heat exchanger with non uniform flow of the agents. Proceedings of the 9th International Conference on Quantitative InfraRed Thermography - QIRT 2008, Kraków, Poland, July 2-5, 2008, pp. 291-299.
- [13] Welty J., Wicks C.E., Rorrer G.L., Wilson R.E.: Fundamentals of Momentum, Heat and Mass Transfer, John Wiley & Sons, 5th Edition, New York, USA, 2008.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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