| 摘要 |
A system by which ground air may be used to cool the interior of a house or other building when outside air temperature is high and warm a house or other building when the outside temperatures is low by using air at substantially ground temperature which is circulated through a duct system by gravity or thermal siphon flow without requiring the use of fans, electrical energy, elaborate controls and the like. The system includes a wall duct system communicated with a gable duct system and discharge at its upper end and an air inlet below ground level such as at the bottom of a basement. The system includes a duct system extending through doors and window assemblies in the external wall of the house or building with the wall duct system being substantially continuous throughout the area of the walls to preclude air migration through the walls.
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