I lag my mash tun using these convenient plastic coated mineral wool panels from ScrewFix:
Anyhow yesterday I was just bringing the Burco up to the boil and I thought why don't I use them on the boiler ... it's at a higher temperature so the energy loss is higher....?
Anyhow the bottom line is that it worked really well - the wort came up to the boil 5-10 min faster, and I only needed 30% power to maintain the boil instead of the normal 40% so that's a decent energy saving
In retrospect I should have worried about the plastic coating melting all over the outside of the boiler - but fortunately no problem.
Anyhow yesterday I was just bringing the Burco up to the boil and I thought why don't I use them on the boiler ... it's at a higher temperature so the energy loss is higher....?
Anyhow the bottom line is that it worked really well - the wort came up to the boil 5-10 min faster, and I only needed 30% power to maintain the boil instead of the normal 40% so that's a decent energy saving
In retrospect I should have worried about the plastic coating melting all over the outside of the boiler - but fortunately no problem.