Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Batteries aren't the only way to store energy. Here's another." video.

  1. How much air do you exchange for your house/apartment? Here in Finland, the minimum required air exhange is 100% of the volume of the the house/apartment per 2 hours. As a result, when it gets very hot outside, you have to pump that hot air inside the house/apartment.
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