Quote:
Originally Posted by Cole_Robbie
Mass can store cold, too, as well as heat. That's why the mass concept does not mix well with paying for heat. In the morning, when the mass is cool, the heat has to run more than if there was no mass at all.
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That might be where the benefit of a Greenhouse or High Tunnel comes in. The plastic covering assisting with heating the ground beneath it, keeping it warmer, over the long term.
But I agree about the mass of cold causing excess heat expenditure.