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zarzavat
on April 27, 2022
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No, you can’t save £30 per year by switching off y...
All heaters are 100% efficient in a closed system. However, your house is not a closed system. It’s a spatial region of an open system. In this context it makes sense to talk about efficiency as being lower or greater than 100%.
_carbyau_
on April 28, 2022
[–]
I wish this were made evident to the hoteliers with bar fridges kept in
sealed
cupboards...
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