Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 13 · column 3 of 7 · from the scan, no model involved
The active system is a closed, hot-air system. A circulating fan located in the attic pushes heat downward through corregated plastic pipes running through the walls and looping underneath the slab foundation. In addition, an outlet with its own fan propels solar-heated air into the living room.
Passive solar heat pours in during winter through three Velux roof windows, one in each bedroom and a
89.8%