Resurrection of a CFEI 100 KVA Induction Furnace

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awemawson:
Thanks for the encouragement chaps . . . .

. . . . you do know that it's DANGEROUS to encourage me don't you :zap:

So who knows about the maths of heat exchangers? It would be nice to pump cold water from the borehole though a simple heat exchanger the other side of which carries the 'furnace water' that needs 40 kW removing

... lot of variables (too many!) - no idea of which / what heat exchanger - make one / buy one / beg one / steal one

charadam:
Hey! I was in the shower when you took the lid off!

Most unpleasant experience and my solicitors will be in touch.

chipenter:
Standard domestic indirect hot water cylinder , with the coil to furnace and cold circulating in the tank will shift a lot of heat .

AdeV:
SO.... drill hole in manhole cover - lower pipe, job's a good 'un! :beer:

awemawson:

--- Quote from: chipenter on April 16, 2020, 03:17:47 AM ---Standard domestic indirect hot water cylinder , with the coil to furnace and cold circulating in the tank will shift a lot of heat .

--- End quote ---

I used that system as a 'cold store' at my last place but got the impression that actually it was limiting the cooling due to the relatively low heat transfer - may be the tank I used was furred up !

I'm now looking at 'welded plate' stainless heat exchangers - they are remarkably compact for their capacity - the bit I'm not too sure of is their effectiveness at the temperatures involved. My 'bore water' will be nice and cold out of the ground - probably 14 C max. My circulating water round the furnace and furnace driver electronics I want to keep to less than 30 C - so the differential of 15/16 degrees is not what for instance you would get with a domestic set up.

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