MODERN GASWORKS PRACTICE
100
Fig. 47.—Bbown’s Regenerator.
A Continental type of regenerator is shown in Fig. 46. In this pattem the walls separating the hot gases and air are reduced to a minimum as regards tliickness, and special tubulär fireclay bricks are employed. These bricks, placed lengthwise to the furnace, have transverse grooves. on the upper and lower outer surfaces and, when put together, form cross-flues between the individual layers. The secondary air, in an ascending stream, passes ontside the tubes and through the cross-flues, the waste gases travelling down from the furnace through the tubes. The shaped bricks are rebated at th.eir ends, thus avoiding leakage between the flues.
Brown’s patent regenerator is shown
in Fig. 47. Ordinary sized firebricks Utting into rebates in the special tiles are used for staying the vertical walls. In building the flues the “ bed ” and “ cross-joints ” of the tiles are broken in both directions. The staying bricks do not extend more than half-way through, the tiles, so that in the event of one tile breaking, short-circuiting does-not take place. Brooke’s system (Fig. 48) is another in which. con-tact is arranged for by tubulär means. It difiers from types given in Figs. 45 and 46, how-ever, in that in this case the secondary air travels inside the tubes, the waste gases circulating aroundthe outside. The ingoing air travels back-wards and forwards in a zigzag direction, and is admitted at two places on each side of
Fig. 48.—Brookb’s Regenerator.