The Natural Philosopher wrote:
Christian McArdle wrote:
You can't have *water* coming out of a shower at 120C, it becomes
steam at 100C at atmospheric pressure.

Yes you can. When it is in the pipe, it is pressurised. It takes a finite
time for it to evaporate when it emerges into atmospheric pressure.

Christian.


But the issue here is one of using a hot water TANK on UNPRESSURISED hot
water supply from a CISTERN type header tank.

As usual we have weaseling from those who realise what asses they are
making of themselves.

ok ;-) Never realised what my post would start, anyway, thanks for the
replies. It looks like however unlikely, a sensible way is to cold from
the header tank. Should this be in 22mm pipes like the hot? I'll have
to lay pipes in the loft, above or below insulation?