"David Hansen" wrote in message
...
On Tue, 7 Nov 2006 20:35:38 -0000 someone who may be "Doctor Drivel"
wrote this:-

Despite what some may claim, instant water heaters, of the sort one
sees in houses, won't run all of this lot. What you need is a stored
hot water system, probably with a fairly large amount of storage.

If all outlets were on, a stored water system would trickle out too.

That depends on the number of cylinders, as well as the pipework and
head. It would certainly be possible to design and build a system
where the water trickled out of some of the taps if they were all
turned on, but that's not something anyone other than a cowboy would
do.

You are missing the point. You can make a stored water system deliver the
required full flow with all taps full on. It will be very big and in a
domestic situation far too large for representative use.

You can do the same with an ionstant watyer heating system, there again far
too large for representative use.

What you wrote was:
"Despite what some may claim, instant water heaters, of the sort one sees in
houses, won't run all of this lot".

Some actually will. However you are not familar with these sort of
installations.