It is currently 28 Mar 2024, 20:14
Tusses wrote:Have you considered insulating on the outside, and letting the walls become a thermal mass ?
RogerS wrote:Thanks, Doug.
I found a useful calculator on the Celotex site and played around with the values of various types of wall construction. Brick cavity with insulation comes out pretty close, I think, and so I'll run with that.
9fingers wrote:I would suggest you do your radiator calcs based on a low flow temperature say around 50 C
This will maximise the time the boiler is in condensing mode and so at its most efficient.
Bob
Doug wrote:9fingers wrote:I would suggest you do your radiator calcs based on a low flow temperature say around 50 C
This will maximise the time the boiler is in condensing mode and so at its most efficient.
Bob
Wouldn't that mean increasing the radiator size by 30% though?
9fingers wrote:.....
To be accurate you need air and water temperatures - as suggested in my earlier post to optimise boiler condensation performance.
hth
Bob
RogerS wrote:9fingers wrote:.....
To be accurate you need air and water temperatures - as suggested in my earlier post to optimise boiler condensation performance.
hth
Bob
That's a very good point as I recall you mentioning a temperature of 50 degrees to keep a condensing boiler at its optimum working conditions IIRC. Many of these calculators assume, I think, 80 degrees. Therefore presumably one needs a larger radiator for 50 degrees.
Trust SWMBO to choose bloody expensive radiators
Which reminds me.....time to feed The Beast.
RogerS wrote:..........I found a useful calculator on the Celotex site......
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