Help with these problems.. for my homework in thermodynamics :(?

Posted on 2015-10-09 06:13:00 in Physics by ALBERTLEE

1. Helium is used in a Carnot engine where the volumes beginning with the constanttemperature
heat addition are v. = 0.3565 m 3, v2 = 0.5130 m 3, v3 = 8.0 ml, and v4 =
5.57 m 3• Determine the thermal efficiency.

2. A carnot engine operates between temperature limits of 1200 Kelvin and 400 K using 0.4kg of air running at 500rpm. The pressure at thebeginning of heat addition is 1500 Kpaa and at the end of the heat addition is 750Kpaa. Find a.) the heat added, in KJ/cycle (answer: 95.488) b) the heat rejected, in kJ/cycle (-31.629) c.) the power produced, in Kw (530.49)

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