I am planning a hydronic radiant centered heat system for a 500 sq' super insulated(R45W,R60C) passive solar addition. High mass slab floor in both basement and first floor so low temp heat will be ideal. A 80 gl buffer tank will be heart of "open" hydronic loop and best way to heat it is still being explored but will be multiple source. HP being first choice if I can find DIY smaller system(need < 1 ton). DHW will tap out of buffer tank to 30 gl elec tank for temp topping off. Short term heat(24-48 hrs) storage in thick slab basement floor.
Oversizing ground loop for geo heat is not detrimental other than expense is it?
|