Earth Tube

Big tubes were delivered yesterday, for an experiment with earth tube ventilation for our meditation room. As you know from visiting caves or cellars the earth down below is cool in summer and warmer than outside in winter. This has been used for thousands of years, also for air conditioning. But earth tubes are not much in use because they are not as easy to install as a compressor unit and electricity has been cheap. Preventing global warming (and more oil spills) however will require a move towards more sustainable energy use.


1 Response so far »

  1. 1

    Hugo said,

    very intelligent.

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