msdsh03

10.11.2019 • 

Mathematics

Two kilograms of air within a piston-cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750 k and 300 k respectively. the heat transfer to the air during the isothermal expansion os 60 kj. at the end of the isothermal expansion, the pressure is 600 kpa and the volume is 0.4 m^3. assuming the ideal gas model for the air determine: (a) the thermal efficiency.(b) the pressure and the volume at the beginning of the isothermal expansion, in kpa and m^3 respectively.(c) the work and heat transfer for each of the four processes in kj.(d) sketch the cycle on a p-v coordinates.

Ответ:

SmokeyRN

21.03.2020

Mathematics

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80°

Every angle in a triangle adds up to 180°.
45° + 55° = 100°
180° - 100° = 80°

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