An engine operating on Ideal Otto cycle has the following conditions: The pressure and temperature a the beginning of compression are 140 kPa and 30 °C respectively. The maximum pressure and temperature are 5000 kPa and 2600 °C. Assume k=1.4. Determine: a. The net cycle work, in kJ/kg b. The cycle efficiency (thermal efficiency).

An engine operating on Ideal Otto cycle has the following conditions: The pressure and temperature a the beginning of compression are 140 kPa and 30 °C respectively. The maximum pressure and temperature are 5000 kPa and 2600 °C. Assume k=1.4. Determine: a. The net cycle work, in kJ/kg b. The cycle efficiency (thermal efficiency).

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter3: The Second And Third Laws Of Thermodynamics

Section: Chapter Questions

Problem 3.10E

See similar textbooks

Similar questions

A piston reversibly and adiabatically contracts 3.88 moles of ideal gas to one-tenth of its original volume, thenexpands back to the original conditions. It does thisa total of five times. If the initial and final temperatures both are 27.5C, calculatea thetotal work andb thetotal U forthe overall process.
14. A Carnot-cycle heat engine uses hot and cold reservoirsat 800 oC and0oC, and it does 10 kJ of work per cycle. A) Calculate maximum possible efficiency of this engine. B) Calculate amount of heat taken from the hotreservoir during one cycle.
Assume a engine is operating via the Carnot cycle; The engine operates between 1000 K and 300 K. a) What is its (maximum) efficiency? b) How could it’s efficiency be changed to 80%? c) If an automobile engine can be approximated as a Carnot engine, absorbing heat at the combustion temp of 800K and emitting heat at its operating temp of 470K, calculate its (maximum) base efficiency. Will it operate more efficiently in the summer or winter?
A rigid insulated tank is divided into 2 equal compartments by athin rigid partition. One of the compartments contains air, assumedto be an ideal gas at 800 kPa and 250◦C. The other compartment isunder a vacuum. The partition is suddenly broken and the air rushesinto the evacuated compartment. The tank pressure and temperatureeventually equilibrate. (a) what is the final temperature of the gas ◦C?(b) what is the final pressure, kPa?(c) how much work is done by the system, kJ/kg?(d) how much heat is transferred to the system kJ/kg
A 5.00 dm3 gas cylinder containing 4.00 kg of NH3(g) at 27oC developed a leak leading to the escape of the gas into the atmosphere. If the atmospheric pressure is 101.3 kPa, calculate the PV work done by the gaas, assuming ideal behavior.
3 Calculate ∆G for the process during which 10 mmol He(g) which initially occupies a volume of 500 cm3, expands isothermally to a final volume of 5 dm3 at 298.15 K.
The figure shows a PV diagram for an engine that uses a monatomic ideal gas as the working substance. The temperature at point A is 470.0 K.(a) How much net work does this engine do per cycle?(b) Assuming that the efficiency of the engine is 0.444, what is the heat input into the gas per cycle?(c) How much heat is exhausted per cycle?(d) How many moles of gas are used in this engine?(e) What is the total change in internal energy of this gas in one cycle?
Calculate the delta Ssystem, delta Ssurrondings, and deltaSuniverse, when 67.5 grams of CO2 initially at 298 K and 10^5 Pa has a volume increase by a factor of 5(Vf/Vi=5) for the follwoing three cases. Assume ideal gas behavior. a. adiabatic reversible expansion b. isothermal expansion aganist Pext=o c. an isothermal reversible expansion
1 kg of Air was heated at constant temperature from 0.03 m3 and 101 kPa to 0.01 m3. By how much did the internal energy change? Assume (cv = 0.7177 kJ/kg.K)
1.0dm3 of an ideal gas at 100kPa and 25C is heated to 50C at constant pressure.What is the new volume, showing all work?
Calculate the minimum constant Pext required for an isothermal compression of 1.5 mol of a vander Waals gas from 5.00 L to 0.850 L. Then, calculate w, q, and ΔU for the compression. a= 0.245 atm mol-2 L2, b=0.005 L mol-1. T=300K
An ideal monatomic gas expands adiabatically from 0.500 m3 to 1.57 m3. If the initial pressure and temperature are 1.30 ✕ 105 Pa and 350 K, respectively, find the number of moles in the gas, the final gas pressure (Pa), the final gas temperature (in K), and the work done on the gas (in J).