Is there a general rule of thumb for amount of water in a boiler?
My kids bought me a steam engine kit for my birthday recently and the boiler is made from brass ( here's a link to the kit and dont laugh!.. http://www.forest-classics.co.uk/Basic Boiler Kit.htm)
Now in the instructions itt says to fill the boiler to approx 2/3 of its volume..
The boiler is approx 113.4cl in capacity (38mm int diameter 100mm long ) so I was thinking of adding a water fill plug to one end...
I reckon that the filler plug needs to approx 10-12mm up from the c/l of the boiler...
Boiler vol= 113.4 cl
Radius =19mm
2/3 volume would be the same as 2/3 of the area of the end plate..so 1/2 full would be half of the volume or half of the area..(dividing the volume by the length of the cylinder)
As the radius is 19mm, then 2/3 would 12.6mm or so, so my filler would need to be that above the horiz c/l of the boiler and that would get me to my desired fill volume..
Does my reasoning appear right or is my logic flawed and there is some other magic number?
My kids bought me a steam engine kit for my birthday recently and the boiler is made from brass ( here's a link to the kit and dont laugh!.. http://www.forest-classics.co.uk/Basic Boiler Kit.htm)
Now in the instructions itt says to fill the boiler to approx 2/3 of its volume..
The boiler is approx 113.4cl in capacity (38mm int diameter 100mm long ) so I was thinking of adding a water fill plug to one end...
I reckon that the filler plug needs to approx 10-12mm up from the c/l of the boiler...
Boiler vol= 113.4 cl
Radius =19mm
2/3 volume would be the same as 2/3 of the area of the end plate..so 1/2 full would be half of the volume or half of the area..(dividing the volume by the length of the cylinder)
As the radius is 19mm, then 2/3 would 12.6mm or so, so my filler would need to be that above the horiz c/l of the boiler and that would get me to my desired fill volume..
Does my reasoning appear right or is my logic flawed and there is some other magic number?