07-01-2012, 08:47 PM
Hi Folks, The solar system will use a Glycol mix to prevent freezing as the working fluid, hence seperate header tanks.
The Glow worm is a cast iron boiler with 4"-6" gap between the boiler and the sheet steel casing; with the cast iron at waterjacket temperatures, so this radiates heat well.
I intend to cover the cast iron with about 1/2" of the insulating material so there is still plenty of space within the casing.
Control on the solar thermal will be with LM 75 temp sensors and speed control of the circulating pump.
Ed
The Glow worm is a cast iron boiler with 4"-6" gap between the boiler and the sheet steel casing; with the cast iron at waterjacket temperatures, so this radiates heat well.
I intend to cover the cast iron with about 1/2" of the insulating material so there is still plenty of space within the casing.
Control on the solar thermal will be with LM 75 temp sensors and speed control of the circulating pump.
Ed
