| 摘要 |
<p>O A radiator comprising a plurality of longitudinally finned tubes (3) formed from extruded aluminium and extending between upper and lower header pipes (1, 2) likewise of extruded aluminium. A water-tight joint is formed at the junction of each finned tube with the adjacent header by means of an interference fit nipple (7). The fins (8, 9) are shaped so as to define a gap (14) between adjacent finned tubes through which air to be heated may be drawn. Such air enters a chamber (30) defined between each adjacent pair of finned tubes (3) and exits to the rear via louvres (27) formed in the rear fins of the finned tubes, taking the general direction of arrows A. A degree of control of the heat output of the radiator may be achieved by rotation of a flap (24) located at the bottom of the space (23) between the radiator and the adjacent wall surface.</p> |
