Not today, but over the last few days:
The recent sharp frosts took their toll on my foundry equipment. The cooling for the induction furnace 'body' and the drive electronics is water protected by a heavy dose of glycol to prevent freezing, but that water is cooled via a plate heat exchanger from water from a deep borehole which of course cannot have any antifreeze.
Although some of he internal pipework had electrical anti-frost trace heating tape but obviously not enough. The flexible umbilical pipe taking pumped borehole water froze solid taking with it it's ball valve which burst. So I've been considerably extending the frost trace cables and adding insulation jackets.
Hopefully all now finished and I can return to casting!

The recent sharp frosts took their toll on my foundry equipment. The cooling for the induction furnace 'body' and the drive electronics is water protected by a heavy dose of glycol to prevent freezing, but that water is cooled via a plate heat exchanger from water from a deep borehole which of course cannot have any antifreeze.
Although some of he internal pipework had electrical anti-frost trace heating tape but obviously not enough. The flexible umbilical pipe taking pumped borehole water froze solid taking with it it's ball valve which burst. So I've been considerably extending the frost trace cables and adding insulation jackets.
Hopefully all now finished and I can return to casting!

