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Old 08-12-18, 01:05 PM   #1
bulldozer
Lurking Renovator
 
Join Date: Aug 2018
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Default root cellar w/ earth tubes

Building an addition to home and wanting to put a root cellar in the basement. To help with ventilation and keep it cooler in the summer I'm thinking about a earth tube system. My proposed system is as follows; root cellar will be 9x6', ventilation would be one 4" pvc pipe ran underneath the garage slab (elevations are offset in profile) for ~40' to open air in a shaded corner on the exterior. There would be a sealed pipe extending upward thru roof w/ a turbine vent. Inlet pipe would be within 1' of the cellar floor and exit would be within 6" of ceiling. My hopes is that the roof turbine would create enough suction to draw outside air thru piping under garage slab, cooling air, and cool/ventilate cellar. I imagine this working as a passive system. As described can you see any hiccups in design that need worked out prior to build? My main concern is airflow, I'm worried that the outlet would have a much higher cfm then inlet. Would one 4" inlet support a 4" outlet with assisted flow?

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