Patent ID: 7637030

Claim:
An east-west model configured as a half Quonset hut of a fully passive-type solar lumber drying house in which the lumber's axis loaded is parallel to an east-west direction comprising: a roof surface, a south surface, an east surface and a west surface of the house made of a triple transparent film, a north surface only made up by an insulated opaque wall, a floor of the house made of concrete, a floor heater molded in the floor, a carbon fiber sheet spread inside the roof, the south, the east and the west surfaces with a small space to absorb the most part of solar radiation permeated therethrough, two fan-cons settled on the floor of south side in upward and small fans hanged from the roof of north side inside the house to circulate air on the surface and into the space of the stacked lumber, a heat exchanger equipped in said fan-cons, an auxiliary boiler with burning woody pellet fuel arranged out of the house for supplying hot water to the floor heater and the heat exchanger for drying the stacked lumber, two insulated cylinders with damper ducts to take out air from the inside settled in north surfaces of the house and damper ducts to take in air from the outside settled in lower part of the east and west side corners of said south surface of the house.