jonny goes to england

London & co

12 Tog is for sweating

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Did you know there is a unit for measuring the warmth of a duvet (well, actually measuring thermal resistance) ?!

As the wikipedia entry put it neatly:

A tog is 0.1 m2K/W. In other words, the thermal resistance in togs is equal to ten times the temperature difference (in °C) between the two surfaces of a material, when the flow of heat is equal to one watt per square metre.

So, a lightweight duvet is about 4.5 Tog, while a winter duvet is in the range of 12.0 – 13.5 Tog.


This might be more something for german readers.. I was told this is common knowledge :s


Written by jk

January 28, 2008 at 5:57 pm

Posted in english, UK

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