Roger Millin wrote:
> Sue asked:
>> Will 10,000btu boiler heat two double radiators plus a calorifier.
>> How do I work out what size we need?
>>
>
> You could also try adapting room dimensions and other data in a site
> such as http://www.radcalcs.com/ to calculate your requirements but
> it is a bit of a bodge as you are using a house based calculator for
> boiler sizing.
> Best I can do I'm afraid.
> Roger
I would use any such calculations with care. The "U" value of a normal
brick wall will not be the same as a boat. It also relies on the outside
wall being in air, whereas part of the boat is in water, and also relies on
the low conduction of heat across the brick wall surface (unlike steel).
It would be nice to draw up a model for a boat, but it would need a fair bit
of unknown data to be determined to make one (I did similar for my Ph.D. in
runaway reactions in steel bombs, the equations are not user friendly...).
("U" is thermal heat coefficient
[http://en.wikipedia.org/wiki/Thermal_conductivity]
- so it's the rate of heat loss {watts] per square metre of wall per DegC
temperature difference across the wall)
Ron Jones
Process Safety & Development Specialist
Don't repeat history, unreported chemical lab/plant near misses at
http://www.crhf.org.uk Only two things are certain: The universe and
human stupidity; and I'm not certain about the universe. ~ Albert
Einstein
