. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. rottle. From the bottom of the separatorthe loop is led back to the boiler, and tbe circulation main-tained by it will dry the steam before it is admitted to thecylinder. There is necessary to its operation a slight fall in tempera-ture at the head of the loop, which is accompanied by a corre-sponding fall in pressure. The water accumulating in thelower end of the loop next to the separator, as soon as it fillsthe diameter of pipe, is suddenly drawn or forced to tbe hori-zont
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. rottle. From the bottom of the separatorthe loop is led back to the boiler, and tbe circulation main-tained by it will dry the steam before it is admitted to thecylinder. There is necessary to its operation a slight fall in tempera-ture at the head of the loop, which is accompanied by a corre-sponding fall in pressure. The water accumulating in thelower end of the loop next to the separator, as soon as it fillsthe diameter of pipe, is suddenly drawn or forced to tbe hori-zontal by that difference in pressure. It is immaterial how faithe water has to be taken back, or how high it is to be is one system now in daily operation lifting the con-densed vater over thirty-nine feet, and another iiiting it «?;>. Maxims and Instructions. 219 THE STEAM LOOP,sixty-three feet. The strength of the system is increased bylength and height, the only limit to its operation being thepracticability of erecting the necessary drop leg, the height ofwhich depends on difference in Fig. 155. Fig. 155 is an illustration of its application to a radiatingcoil. To understand the philosophy of its action, and referringto the illustration, let us assume that all the valves are open,and full boiler pressure is freely admitted throughout thesteam pipe, coil and loop. Now, if the pressure were exactlyuniform throughout the whole system, the water in the loopwould stand at a on the same level as the water in the , as a matter of fact,the pressure is not uniform through-out the system, but steadily reduces from the moment of leav-ing tiie dome. This reduction in pressure is due in part tocondensation and in part to friction, and although generallysmall is always present in some degree. The pressure may beintentionally reduced at the valve on the coil, and reductionnecessarily results from condensation within the coil itself. Astill further reduc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
