"Derek Geldard" wrote in message
...
On Sat, 8 Dec 2007 20:14:07 -0000, "Mary Fisher"
wrote:

How many kWh worth of energy in total did you gain from your solar
heating installation today Mary?

Not measured.

It was less than 3C (Got a constant frost warning in the car) and
gloomier than The Wreck of the Hesperus at 1-00 pm in Leeds, and dark
by soon after 3-00 pm.

It wasn't dark until after 4 in our part of Leeds and it wasn't cold enough
for the CH to come on

I assume you had the heating on in your car ... :-).

We haven't bothered measuring since the first few days after connection.
That day it was 4C in the shade and at the end of the day we ended up with a
large tank full of water at over 30C.

OTOH The temperature of the water in our rising main was 7C, it would
be very easy to make a net heat loss from a solar water heating system
under these circumstances.

It hasn't happened to us.

How many were you washing up for?

Three - why?

What kind of boiler/system and how big?

Irrelevant. The sun provides the majority of our domestic hot water, the
boiler provides the heating for the radiators - which are hardly ever been
on.

Why on Earth are people so antagonistic towards something of which they have
no personal experience?