B) For a heat engine, process “a to b" is isothermal compression. Pressure and volume at point “a" is 2 x 105 Pa and 0.010 m³. Pressure and volume at point “b" is 4 x 105 Pa and 0.005 m³. Process “b to c" is at constant pressure, and process “c to a" is at constant volume. The engine takes 1.00 mol of a diatomic ideal gas around each complete cycle. [14] I) Draw the PV diagram consisting the processes in each cycle of the heat engine. II) Calculate Heat (Q), Work dome (W) and change in internal energy (AU) for each of the three processes. III) Determine the thermal efficiency of the engine? IV) Determine the efficiency of a Carnot-cycle engine operating between the same minimum and maximum temperatures of the above heat engine.

B) For a heat engine, process “a to b" is isothermal compression. Pressure and volume at point “a" is 2 x 105 Pa and 0.010 m³. Pressure and volume at point “b" is 4 x 105 Pa and 0.005 m³. Process “b to c" is at constant pressure, and process “c to a" is at constant volume. The engine takes 1.00 mol of a diatomic ideal gas around each complete cycle. [14] I) Draw the PV diagram consisting the processes in each cycle of the heat engine. II) Calculate Heat (Q), Work dome (W) and change in internal energy (AU) for each of the three processes. III) Determine the thermal efficiency of the engine? IV) Determine the efficiency of a Carnot-cycle engine operating between the same minimum and maximum temperatures of the above heat engine.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Correction: "There is an adiabatic expansion to point B"
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A heat engine with 0.221 mol of a monatomic gas undergoes the cyclic procedure shown in the pV diagram, where Pi = 360 kPa, p2 = 480 kPa, Vị = 1.52 × 10³ cm³, and V, = 2.34 x 103 cm³. Between Stage 3 and Stage 1, the gas is P2 - at a constant temperature, and between Stage 2 and Stage 3, no heat is transferred in or out. The temperature of the gas at Stage 2 is 400 K. Identify the type of each process in the cycle. The process between Stage 1 and Stage 2 is isochoric. Volume (em) The process between Stage 2 and Stage 3 is adiabatic. The process between Stage 3 and Stage 1 is isothermal. What is the temperature T between Stages 3 and 1? Т- K What is the work Wout per cycle of this heat engine? Wout = Find the efficiency y of this heat engine. Pressure (kPa)