. Applied thermodynamics for engineers. Fig. 299. Art. 612. — RegenerativeRefrigeration. 456 APPLIED THERMODYNAMICS 613. Bell-Coleman Machine. This is the Joule air engine of Art. 101,reversed. It operates in the net cycle given by an air compressor and anair engine, as in Art. 213. In Figs. 300 and 301, C is the room to becooled, A a cooler, M a compressor, and N an expansive cylinder (airengine). In the position shown, with the pistons moving toward the left,air flows from (7 to Jf at the temperature T^. On the return stroke, thevalve a closes, the air is compressed along c6. Fig. 301, and t
. Applied thermodynamics for engineers. Fig. 299. Art. 612. — RegenerativeRefrigeration. 456 APPLIED THERMODYNAMICS 613. Bell-Coleman Machine. This is the Joule air engine of Art. 101,reversed. It operates in the net cycle given by an air compressor and anair engine, as in Art. 213. In Figs. 300 and 301, C is the room to becooled, A a cooler, M a compressor, and N an expansive cylinder (airengine). In the position shown, with the pistons moving toward the left,air flows from (7 to Jf at the temperature T^. On the return stroke, thevalve a closes, the air is compressed along c6. Fig. 301, and the valve s p i C h -. M 1 1 N E ^. Fig. 300. Art. 613. — Bell-ColemanMachine. Fig. 301. Arts. 613, 614, 616, 622, 623.— Reversed Joule Cycle. opens, permitting of discharge into A along be, at the temperature Tf,.The operation is now repeated, the drawing in of air from O to Jf beingrepresented by the line fc. Meanwhile an equal weight of air has beenpassing from ^ to A^ at the temperature T^, less than T^ on account of theaction of the cooler, along ea; expanding to the pressure in G along ad,reaching the temperature T^, lower than that in (7; and passing into O atconstant pressure along df. The work expended in the compressor cylinderis fcbe; that done by the expansion cylinder is fead; the difference, abed,represents work required from loitliout to permit of the cyclic the lines ad, be, are isodiabatics. Suitable means are provided for cooling the air in the compressor cylinder, so as toavoid the losses due to a rise of temperature (Art. 195), and also for drying theair entering the expansion cylind
Size: 1802px × 1387px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1913
