All About Engines

Raising Steam 97 of a box with inlet and outlet pipes near the top on opposite sides, and a vertical partition suspended trom the lid and reaching nearly to the bottom of the vessel, right in the path of the steam. The drops of water in the steam adhere to the partition, trickle down, and drip off the bottom. From time to time water is drawn off from the bottom of the vessel by a piece of apparatus called a steam trap. A more effective dryer is that made by Hopkin- son, of Huddersfield (see Fig. 53 on Plate 6). The direction of the steam is indicated by arrows. On entering the chamber a it meets spiral vanes attached to the sides, and is whirled round. The water drops emg heavier than the particles of steam, are flung against the vanes and sides, to which they adhere and from which they trickle down into the chamber B. e dry steam flows through the chamber c to the exit At the side is a water gauge, and the water can be run out from time to time through the Dine at the bottom. 1 Quite apart from the water which is carried along y the steam, there is always a certain amount of condensation in the pipes. However carefully these are covered with non-conducting material, heat always passes to the surrounding air, and consequently some 01 the steam is condensed to water. This water is removed by placing a trap at the lowest point in the pipes so that the water will drain into it. There are several varieties of trap, all arranged to dis- charge water automatically as it collects. The Geipel rap, shown in Fig. 54, works on a very interest- H