| 摘要 |
<p>The unit is characterised in that it comprises, for each space to be heated, at least one hot-air pulsion duct (2) which delivers towards a pulsed-air chamber (1) a current of hot primary air drawing with it a current of secondary air at ambient temperature, the delivery of hot primary air being heated to a temperature which is greater than that of the ambient air, that is to say the temperature of the space in question. <IMAGE></p> |
