A four-cylinder, 8 cm x 10 cm, single acting, V-type compressor operates at 600 rpm. Iti s used in a Freon-12 vapor compression system with condenser and evaporatort emperatures of 29OC and -14OC, respectively. If the compression is dry and isentropic,the clearance is 2 percent. (a) Draw the cycle schematic diagram and (b) draw the corresponding p-h diagram and determine (c) the refrigerating capacity in tons, (d) the heat given off in the condenser, and (e) the COP. The gas constant, k for R-12 is 1.126.

A four-cylinder, 8 cm x 10 cm, single acting, V-type compressor operates at 600 rpm. Iti s used in a Freon-12 vapor compression system with condenser and evaporatort emperatures of 29OC and -14OC, respectively. If the compression is dry and isentropic,the clearance is 2 percent. (a) Draw the cycle schematic diagram and (b) draw the corresponding p-h diagram and determine (c) the refrigerating capacity in tons, (d) the heat given off in the condenser, and (e) the COP. The gas constant, k for R-12 is 1.126.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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