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Why need to vacuum in transformer chamber before filling transformer oil and how long need to vacuum?
we need vacuum to remove moisture from tank
Why do you use a vacuum pump on an air conditioning unit?
They are used when installing, to ensure there is no air or moisture in the pipework. On large industrial and commercial systems a sight glass may also be installed so the presence of moisture can be constantly checked for.
Why do you do load test in transformers?
Moisture causes problems in transformers, and is not desired. Pulling a vacuum causes the moister in the oil impregnated paper and nonmetallic supports to evaporate, and as the vacuum is held, this moister can be removed.
How do you remove oxide layer from steel after vacuum heat treatment?
It is important to heat treat in vacuum as otherwise lots of oxides form; after heat treat in vacuum oxides are removed, if part small enough, by use of an abrasive grit pad, such as Scothbrite A, and cleaned with acetone followed by isopropyl alcohol. If not protected, however, oxides will continue to form in air
Can you assign temperature to a vacuum?
Answer Yes, you can. I think the answer is no. A physical object in a vacuum can have some energy/heat in it, and the energy associated with electromagnetic radiation can have energy/heat associated with it, but the vacuum itself cannot. ______________________________________________________________________ There is no such thing as a vacuum.
