Identifier: heatengineeringt00gree (find matches)
Title: Heat engineering; a text book of applied thermodynamics for engineers and students in technical schools
Year: 1915 (1910s)
Authors: Greene, Arthur Maurice, 1872- (from old catalog)
Subjects: Thermodynamics
Publisher: New York (etc.) McGraw-Hill book company, inc.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ustrates the method of bringing cool air to the compressorfrom a point outside of the engine room through the conduit Land at M and N are the water jackets to remove some of the heatof compression. Fig. 39 is introduced to show the valves of the low-pressurecylinder. In the periphery of each face of the piston are a series of slots distributed around the pistonthrough which air can pass. Over thisis fitted a ring which closes this open-ing and acts as a valve. This is knownas the hurricane inlet valve. Whenthe piston moves to the left at the be-ginning of a stroke the right-hand ringis moved from its openings and air canenter behind the right side, the com-pressed air on the left holding closedthe valve on the left side. At the endof the stroke the inertia of the ringtends to close the right one as the pis-ton reverses and the left one will openas soon as the pressure of the air inthe left-hand clearance space expandsto atmospheric pressure. The dis-charge valves are ordinary mushroom
Text Appearing After Image:
Fig. 40.—Vertical after cooler and intercooler of Igersoll-Rand Co. valves with a light spring to close them and a tube on theback to act as a guide. Fig. 40 shows the construction of an intercooler, through whichthe air must pass from one stage to another and give up its heat.By the arrangement of baffle-plates and partitions the air andwater are made to take a circuitous path so as to be moreefficient in the removal of heat. The moisture which separates 122 HEAT ENGINEERING as the air is cooled is usually caught as shown in the figure so thatit will not pass over into the next stage. In many cases an after cooler, Fig. 40, is used after the laststage to remove more of the moisture from the air and to cool itbefore it passes into the transmission line. In this way the airis of smaller volume and there is less friction. Fig. 41 illustrates the arrangement of the Taylor hydraulicair compressor. In this a system for the flow of water mustexist. Suppose the dam A gives a head of H feet

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