Janosh wrote:
>The fact that condensation may take place
>in earth tubes could be a major reason of concern because mold will probably
>begin growing in these tubes and become airborne. I wouldn't want to be
>breathing it
Everything I've read about them says that it's important to provide drainage in the tubes and to regularly clean them out. A swab can be run through them with a string which should eliminate any mold accumulation.
My concern is about ground heat saturation. If the ground is heated around the tube, you won't be able to get any cooling effect by passing air thorough it. I'd like to understand at what point that happens.
I do know that in early spring around here (Kansas) you can use a fan to bring cool air up from your basement and it'll cool your house (provided you have something to control the humidity), but when it warms up sufficiently outside, there isn't enough surface area in the basement walls to overcome the amount of heat that gets transferred and the cooling stops.
Greg
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