Effect of fan arrangement and air flow direction on thermal performance of radiators in a power transformer

• Autorzy: Paramane S. B. , Van der Veken W. , Sharma A. , Coddé J.
• Języki publikacji: EN

Abstrakty

EN

The focus of the present numerical work is to study the effect of fan air flow direction and mounting arrangement on the thermal performance of the radiators of power transformers using Computational Fluid Dynamics analysis. The study is carried out for four radiators of 3 m height and 30 fins with 0.52 m width and two fans of 1 m diameter in vertical and horizontal air flow directions. The horizontal flows from the two fans are considered in the same and the opposite direction, with the fans located on the same and the opposite side, respectively running at the same speed of 860 rpm for all configurations. Thermal radiation is modelled using the discrete transfer radiation model. A comparison of different flow and heat transfer patterns as well as heat dissipation - for the four different configurations - is presented. Velocity and temperature contours are used to visualize the heat and fluid flow distribution over the radiators. Fans placed on one side of the radiators result in larger heat dissipation than the other arrangements studied. The reasons for the improvement in heat dissipation are presented.

Słowa kluczowe

EN

radiator; fan arrangement; cross flow; heat dissipation; CFD; flow distribution; transformer cooling

PL

grzejnik; rozmieszczenie wentylatorów; przepływ krzyżowy; rozpraszanie ciepła; CFD; dystrybucja przepływu; chłodzenie transformatora

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2017
• Tom: Vol. 97, nr 2
• Strony: 127--134
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr.

Twórcy

autor

Paramane S. B.

• Global R&D Centre, Crompton Greaves Ltd., Mumbai, 400042, India

autor

Van der Veken W.

• Crompton Greaves Power Systems Belgium NV, Antwerpsesteenweg 167, 2800 Mechelen, Belgium

autor

Sharma A.

• Indian Institute of Technology Bombay, Mumbai, 400076, India

autor

Coddé J.

• University of Leuven, Division of Applied Mechanics and Energy Conversion (TME), Celestijnenlaan 300-box 2421, 3001 Leuven, Belgium

Bibliografia

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• [3] E. I. Amoiralis, P. S. Georgilakis, M. A. Tsili, A. G. Kladas, Global transformer optimization method using evolutionary design and numerical field computation, Magnetics, IEEE Transactions on 45 (3) (2009) 1720–1723.
• [4] R. B. Fdhila, E. Kranenborg, T. Laneryd, C.-O. Olsson, B. Samuelsson, A. Gustafsson, L. Lundin, Thermal modeling of power transformer radiators using a porous medium based cfd approach, in: Second International Conference on Computational Methods for Thermal Problems, Dalian, China, 2011.
• [5] J. Gastelurrutia, J. C. Ramos, G. S. Larraona, A. Rivas, J. Izagirre, L. Del Río, Numerical modelling of natural convection of oil inside distribution transformers, Applied Thermal Engineering 31 (4) (2011) 493–505.
• [6] C. Olsson, Buoyancy driven flow in counter flow heat exchangers, in: 6th European Thermal Sciences Conference, Poitiers, France, 2012, pp. 1–8.
• [7] M.-g. Kim, S. M. Cho, J.-K. Kim, Prediction and evaluation of the cooling performance of radiators used in oil-filled power transformer applications with non-direct and direct-oil-forced flow, Experimental Thermal and Fluid Science 44 (2013) 392–397.
• [8] S. B. Paramane, K. Joshi, W. Van der Veken, A. Sharma, Cfd study on thermal performance of radiators in a power transformer: Effect of blowing direction and offset of fans, Power Delivery, IEEE Transactions on 29 (6) (2014) 2596–2604.
• [9] W. Van der Veken, S. Paramane, R. Mertens, V. Chandak, J. Codde, Increased efficiency of thermal calculations via the development of a full thermohydraulic radiator model, IEEE Transactions on Power DeliveryAccepted for publication.
• [10] ANSYS 2009. CFX manual. Theory. Version 12.1.
• [11] T. Zitzmann, P. Pfrommer, M. Cook, Dynamic thermal building analysis with cfd–modelling radiation, Proceedings: Building Simulation, Beijing, China (2007) 31–38.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).