. Applied thermodynamics for engineers. Fig. Arts. 253, Cycle. ■Reit- FiG. 100. Arts. 253, 256, 257, 258 > 259.—Eeitlinger Cycle, EntropyDiagram. 254. Joule Engine. An air engine proposed by Ericsson as early as1833, and revived by Joule and Kelvin in 1851, is shown in Fig. 101. Achamber C contains air kept at a low temperature t by means of circulatingwater. Another chamber A contains hot air in a state of compression,the heat being supplied at a constant temperature T by means of an ex-ternal furnace (not shown). Jf is a pump cylinder by means of which air 1 ENGINE III lllllll
. Applied thermodynamics for engineers. Fig. Arts. 253, Cycle. ■Reit- FiG. 100. Arts. 253, 256, 257, 258 > 259.—Eeitlinger Cycle, EntropyDiagram. 254. Joule Engine. An air engine proposed by Ericsson as early as1833, and revived by Joule and Kelvin in 1851, is shown in Fig. 101. Achamber C contains air kept at a low temperature t by means of circulatingwater. Another chamber A contains hot air in a state of compression,the heat being supplied at a constant temperature T by means of an ex-ternal furnace (not shown). Jf is a pump cylinder by means of which air 1 ENGINE III lllllll N u 5P I 1 -a c— =G=^ ( 1^ —7 ^ i HOT CHAMBER cihj lll< lllllll M PUMP COLDCMAMBEH Fig. 101. Arts. 254, 255, 275.—Joule Air Engine. may be delivered from (7 to A, and iVis an engine cylinder in which airfrom A may be expanded so as to perform work. The chambers A and Qare so large in proportion to M and N that the pressure of the air in thesechambers remains practically constant. 150 APPLIED THERMODYNAMICS The pump 3f tak
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