The bathroom radiator is a unique and interesting one. It has been a long thought out project, has taken a lot of planning, and is a quirky idea which we thought would be good for a few reasons. As with all these things, they are at the same time uncomplicated and also very difficult, in some paradoxical way.
The purpose of the radiator is to be "permanently losing heat" when the fire is on, to decrease the chance of a run-away solid fuel fire boiling the water in the back boiler. The capacity of the radiator needs to be 10% of the stove, in our case 1kW for the 10kW output, which is a significant amount. With 17m of non-insulated 28mm copper pipe, this should be met with a temperature difference between the water and the air of around 70 degrees C.
The mountings are brass munsen rings, screwed in to the wall posts with 5 x 70mm screws (many thanks to the Joiner for sundries). The whole thing is removable via 2 compression fittings at each end, and there will be a bottle air vent trap at the top just in case it's required. There will also plan to be an immersion element in the bottom in case the radiator heat is needed but the fire is not needed/wanted.
The towel hanging and clothes hanging space should prove very valuable...
The towel hanging and clothes hanging space should prove very valuable...
Here is some of the build, with thanks to Auren for lending a hand.
Initial weld of L-sections, so that angles were not welded in error which would translate across the radiator. |
Pre-second welding, setting out all the pipe and connections with the L-sections |
New Zealand plumber, holding our ingenious heat shield - slates stuck to plasterboard. This is during the final weld. |