Abstract:

A small-scale facility was designed to carry out experiments to investigate the ascending smoke movement in singlestory large space with radiant floor heating. Experimental conditions were simulated by FDS, and the so- obtained results was used to verify the validity of FDS. simulations were performed to illustrate the smoke movement of real fire scene in large space using radiant floor heating, and main factors affecting smoke movement and control measures were studied. Study shows that the gases in enclosures with radiant floor heating are unstable. The finding shows that the underfloor heating could speed up the velocity of both the ascending gas and the ceiling jet.

Key words: underfloor heating, single-layer large space, smoke movement, FDS simulation