Urn Jacket - What the best dressed Urns are wearing.

I work at a school where coffee and tea are available all day. It occurred to me that a lot of energy is being wasted keeping the urn on all day.   I carried out an experiment using first one layer and then two layers of batting in an urn jacket.

On 6 trials the urn used an average of 0.280kW/Hour, with one layer it was 0,215kW/h and 2 layers and a hat brought it down to 0,198kW/h.   This is a saving of 37%.   The saving is not so much in the initial boiling of the urn but in it maintaining its temperature.

The urn has to be fitted for size and holes for handles, controls and outlets.   I used velcro to connect padded strips above the handles and at the front top and bottom.   The eyes are just for fun.   The hat is a circular cushion with a hole in the middle, filled with polystyrene beads which help it settle down on the slightly domed surface of the lid. An elastic band was initially used to keep the jacket snug but is no longer necessary.