Investigation of the thermal head effect in a power transformer

TMs paper describes the numerical simulation for improving heat transfer in a power transformer by the difference in elevation between the center of the coils and the center of the radiators which was called the thermal head. The simulations were performed to analyze the heat transfer characteristic...

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Bibliographic Details
Published in2009 Transmission & Distribution Conference & Exposition: Asia and Pacific pp. 1 - 4
Main Authors Chang-Hwan Cha, Joong-Kyoung Kim, Ki-Yeoung Kweon
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
Analytical models
buoyancy effects
CFD code
Coils
Computational fluid dynamics
Cost function
Design optimization
Heat transfer
natural convection
Numerical simulation
ONAF(oil natural air forced)
ONAN(oil natural air natural)
Performance analysis
power transformer
Power transformers
Radiation safety
radiator
thermal head
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Summary:TMs paper describes the numerical simulation for improving heat transfer in a power transformer by the difference in elevation between the center of the coils and the center of the radiators which was called the thermal head. The simulations were performed to analyze the heat transfer characteristics of the radiator in a power transformer using commercial CFD code (Fluent 6.3) and to optimize the design of radiator for obtaining reliability, safety, and low cost manufactures. By increasing the thermal head we can save the heat transfer area of radiators with increased mass flow rate of the oil. But we need to have a clear understanding of the cooling pattern in a radiator for optimizing the height of radiator due to the relation between the thermal head and heat transfer area. It is anticipated that in the design of power transformer, improving the thermal head would significantly help to minimize the cost and size of radiators.
ISSN:2160-8636
2160-8644
DOI:10.1109/TD-ASIA.2009.5356811