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In recent
time, in response to increasing costs of material and labour, a new concept, in
heat exchange by use of corrugations on transformer tanks is emerging very fast.
It has virtually eliminated the radiator's concept and due to its Hermetically
Sealed construction it eliminated the contact of oil with the outside atmosphere,
thus making whole arrangement totally maintenance free .The
distribution transformer is provided with a corrugated finned tank. The role of
the fins is to increase the surface of the tank which is in contact with cooling
air. Due to the temperature rise of the windings under load, the oil temperature
also rises.
The hot oil rises, meets the top cover and goes down into the fins where it is
cooled by the air rising up between the fins. As the number and depth of the fins
increases and their width decreases, the oil cooling improves.
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Pressed
Steel Radiators for Distribution and Power Transformers: |
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The new circular embossing
introduced enables the transformer oil to be distributed across the radiator
at any level which results in even heat dissipation over the total width of
the element thus improving the heat dissipation and efficiency in comparison
with the radiator types available in the market. |
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