| 摘要 |
Ventilation and heat exchanging system for premises housing animals, especially poultry, the system having one or more fans, one or more ducts for outgoing air which extends through an inner ceiling to a general collecting air flue, on the sides of which connect two vertically spaced sheets the space between which are connected to the collecting air flue, and behind the outer sheet which functions as a heat exchange sheet there opens one or more ducts for air intake (7) through an inner ceiling. Of the mentioned sheets the lower surface of the inner sheet is equipped by a heat insulating layer (4), the heat insulating ability of which at least in the vicinity of the ducts for incoming and outgoing air (1 and 7) in essence corresponds with the heat insulating ability normally required by an inner ceiling.
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