THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

External Links

online first only

Validation of CFD analysis of natural convection conditions for a resin dry-type transformer with a cabin

ABSTRACT
Many industrial products work under different constraints. Examples of these products include transformers and keeping them in certain operating temperatures is an important design constraint. However, since power transformers have different requirements, there are no standard products. For this reason, it is difficult and costly to test each one by considering these constraints and to design them accordingly. Satisfactory thermal analysis using a 3D Finite Volume-based CFD model is an important step to understand natural convection and necessary design modifications under the desired conditions. The aim of this study is to verify the performance and reliability of the design by comparing the experimental results with 3D finite Volume analysis results by considering cooling of a dry resin type transformer with a cabin. The effect of the cabin on the product in terms of natural heat convection is also evaluated.
KEYWORDS
PAPER SUBMITTED: 2018-09-19
PAPER REVISED: 2018-09-30
PAPER ACCEPTED: 2018-10-27
PUBLISHED ONLINE: 2018-12-16
DOI REFERENCE: https://doi.org/10.2298/TSCI180919327Y
REFERENCES
  1. Kömürgöz, G., Güzelbeyoğlu, N., Determining of the Temperature Distribution of Self-Cooled Dry Type Power Transformers, ITUdergisi/d, Mühendislik, 1, (2002), 1.
  2. Lee, M., Abdullah, H. A., Jofriet, J. C., Patel, D., Fahrioğlu, M., Air Temperature Effect on Thermal Models for Ventilated Dry-Type Transformers, Electric Power Systems Research, 81 (2011), pp. 783-789
  3. Rahimpour, E., Azizian D., Analysis of Temperature Distribution in Cast-Resin Dry-Type Transformers, Electrical Engineering, 89 (2007), pp. 301-309
  4. Eslamian, M., Vahidi, B., Eslamian, A., Thermal Analysis of Cast-Resin Dry-Type Transformers, Energy Conversion and Management, 52 (2011), pp. 2479-2488
  5. Eteiba, M. B., Alzahab, E. A., Shaker, Y. O., Steady State Temperature Distribution of Cast-Resin Dry Type Transformer Based on New Thermal Model Using Finite Element Method, World Academy of Science, Engineering and Technology, 4 (2010), 2, pp. 806-810
  6. Gastelurrutia, J., Ramos, J.C., Larraona, G. S., Rivas, A., Izagirre, J., et al., Numerical Modelling of Natural Convection of Oil Inside Distribution Transformers, Applied Thermal Engineering, 31 (2011), pp. 493-505
  7. Cremasco, A., Barba, P. D., Cranganu-Cretu, B., Wu, W., Blaszczyk, A., Thermal Simulations for Optimization of Dry Transformers Cooling System, Scientific Computing in Electrical Engineering, Mathematics in Industry, 23 (2016), pp. 103-113
  8. Pierce, L. W., Predicting Hottest Spot Temperatures in Ventilated Dry Type Transformer Windings, IEEE Transactions on Power Delivery, 9 (April 1994), 2, pp. 1160-1172
  9. Tripathi, B., Moulic, S. G., Arora, R.C., A CFD Analysis of Room Aspect Ratio on the Effect of Buoyancy and Room Air Flow, Thermal Science, 11, (2007), 4, pp. 79-94
  10. Hannun, R. M., Hammadi, S. H., Khalaf, M. H., Heat Transfer Enhancement from Power Transformer Immersed in Oil by Earth Air Heat Exchanger, Thermal Science, doi:doi.org/10.2298/TSCI117231116H
  11. Holman, J. P., Heat Transfer, McGraw-Hill Book Company, New York, USA, 2014
  12. Incropera, F. P., David, P. D., Fundamentals of Heat and Mass Transfer, John Wiely&Sons, NewYork, USA, 2011
  13. ANSYS R14.5, FLUENT in ANSYS Workbench User's Guide, 2012