| 摘要 |
<p>System for heating indoor areas comprising 'sandwich'-type structures (182) on at least one face of which turned towards the indoor area are metal sheets (184) which turn the structural parts into heating parts as well as by an increase in temperature, even only of a few degrees, compared with ambient temperature, of said metal sheets (184), said increase being obtained by closure of an electric circuit (190-191) by means of said metal sheets (184).</p> |
