The Craftmans Shop > New from Old
Resurrection of a CFEI 100 KVA Induction Furnace
Sea.dog:
How about having a side tank with pump, which is valved off from the cooling circuit until required, and filled with something nice such as concentrated phosphoric acid? Heat it, too, and it'll shift any residue very effectively.
awemawson:
I may be doing a re-think here !
The original chiller cost about £2 per hour in electricity to run
I am being charged about £1.80 per cubic metre of treated drinking water. So if I can get adequate cooing in the heat exchanger using my tap water realistically it's no more expensive than using the original (and now) defunct chiller. It will eliminate the need for expensive bore hole pumps, trenching etc.
This would mean that the heat exchanger cold side would have filtered treated water of course.
So this morning I need to measure how fast my local internal water distribution system can deliver water to the foundry, then somehow work out if that is an adequate source of cooling for the heat exchanger :scratch:
Sea.dog:
If only you had a hydrant somewhere :scratch: :thumbup:
awemawson:
And the answer is 3 gallons in 55 seconds at 10 degrees C
Or 14.8 litres / minute.
But how the heck does 14.8 litre / min at 10 degrees C through a heat exchanger translate into energy extracted from the primary?
There must be some sort of 'transfer function' for the H.E. that varies with the temperature differential, and the cooling water is going to be raised in temperature by a certain amount. And that volume of warmed water in (say) an hour translates into a certain amount of energy but now I'm getting on very shaky ground.
awemawson:
--- Quote from: Sea.dog on April 17, 2020, 04:37:01 AM ---If only you had a hydrant somewhere :scratch: :thumbup:
--- End quote ---
It's a long way away and that would be naughty !
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version