John Elliott wrote:There is a word for your idea: qanat -- and yes, it's been done for quite a while.
Chris Magwood wrote:If you were to use clay pipe (as many of the early civilizations who use this passive cooling would have done), the clay can absorb excess water and is less likely to grow mould.
Chris Magwood wrote:I would definitely seek out the clay pipe. The black plastic won't have as great a tendency to encourage condensation, but the clay will be much better.
Nick Herzing wrote:Another thing to consider is personal cooling methods. Basically it's easier to keep a person cool than a whole house.