By placing the fire and chimney on opposite sides of the house and constructing a tunnel between them, heat is pulled through the tunnel, heating the floors and helping distribute heat more evenly.
By placing the fire and chimney on opposite sides of the house and constructing a tunnel between them, heat is pulled through the tunnel, heating the floors and helping distribute heat more evenly.
Yes. (Linked article is Korean)
Modern ondol systems use piped hot water. One of the pleasures of being in Korea in winter is finding a literal hot spot to sit or lie on, since the heating is not perfectly even.