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Posted by HeatPro on September 09, 2008 at 11:54:05:
In Reply to: Frozen house/system posted by Brad on September 08, 2008 at 01:05:18:
You want to study the complete design procedure at:
http://www.heatpro.us/eurotree/
The old thermosyphon system had large pipes so a circulator wasn't used. Modern pumped systems use much smaller sizes.