ODWF vs ODAF Transformer
ODWF vs ODAF Transformer
(OP)
Does anyone have a feel for the relative cost comparison for a forced air cooled transformer compared to a water cooled unit, say at 100 MVA?
Thanks in advance!
Thanks in advance!






RE: ODWF vs ODAF Transformer
RE: ODWF vs ODAF Transformer
RE: ODWF vs ODAF Transformer
The problem with water cooling is tube corrosion from various reasons.If the water velocity is high, corrosion from various erosions is the result.If velocity is low,crevice corrosion from galvanic cell formation can cause pitting. In many countries strict laws prohibit oil leaking in to rivers.So a solution widely used is double tube construction so that leaked oil will not go to river water.Still due to maintenace liabilty issues, whereever space allows new projects go for oil to air heat exchangers, but for underground hydrostations there seems no other alternatives to take away heat.
RE: ODWF vs ODAF Transformer