4 ms·
You might want to look at biogas digester design - I met farmers near Hanover who were running big biogas digesters, and using the excess heat to heat their hom
by swiftcoder 3mo ago
You might want to look at biogas digester design - I met farmers near Hanover who were running big biogas digesters, and using the excess heat to heat their homes and pools all winter…
- hmhrex 3mo agoOh thanks! This is exactly what I was thinking!