| 摘要 |
<p>A live stock house ventilation system 12 compromising a sensing device 16 for monitoring the level of carbon dioxide in the house, a ventilation arrangement for introducing a controlled amount of external atmospheric air into the house and a controller 15 configured to signal operation of the ventilation arrangement in response to the level of carbon dioxide sensed by the sensing device so as to maintain carbon dioxide below a predetermined level and minimise the requirement for ventilation. The system preferably includes a radiant heater 18 and a heat exchanger to recover heat from the exhausted air. The ventilation arrangement can be a discrete device 20 which introduces air via an opening in the side wall of the housing 10 and expels air via another opening.</p> |
