Spat wrote:
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?

Yup 22mm.

Below insulation probably simply to avoid possible freezing.