The Craftmans Shop > New from Old
Resurrection of a CFEI 100 KVA Induction Furnace
awemawson:
So cheating a bit and using an On Line water heating calculator it turns out that in theory, a water filled 1000 litre IBC would last for 44 minutes if pumped round the furnace and furnace body (which would be dumping about 40 kW into it) before reaching the upper temperature limit.
awemawson:
Now ideally the IBC would have a copper coil immersed in it, being cooled by the bulk of the water, which would be constantly be being replaced thus extending the operating period to continuous.
So I need a source of water - OK I have a stream but it's about 75 metres away - not impossible to pump but a pain. Returning the used water to the stream is less of an issue as the surface drains run there.
BUT
Since we've been here we've been unable to explain a 'mystery 24" manhole cover' at the back of my workshop and not far from the foundry. We've never been able to open it - it looks perhaps to have been welded shut, but not actually expended much effort on it - but perhaps now is the time because . . . .
Searching the on line bore hole database shows a borehole in approximately the same place, and details of the borehole are available on line - all nine pages of data !
http://scans.bgs.ac.uk/sobi_scans/boreholes/651959/images/12563414.html
Now if this IS the borehole, and if I can lift the cover, and if it's not been back filled there is a possibility of free water fairly close to where I need it . . . mmmmm . . . . thinks . . .
. . . any volunteers to open a darn heavy sealed man hole cover ???
Joules:
Drill it tap it, fit a spark plug... Now add 50’ of chain secured to cover and staked out opposite from workshop. Once the cover has blown, you just need to follow the chain and dig out the cover.... Simples...
:thumbup: :jaw:
chipenter:
We used to lift those with a tractor hydraulics , slide the pulling bar though the two keys and lift until the front wheels are off the ground , then bash round the perimeter with a 5 pound hammer , the vibration did it every time .
Pete.:
A big lever key should pop that open. Might want to run a jetwash around the lip first.
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