An engine using 1 mol of an ideal gas initially at 22 L and 448 K performs a cycle consisting of four steps: 1) an isothermal expansion at 448 K from 22 L to 35.2 L; 2) cooling at constant volume to 314 K; 3) an isothermal compression to its original volume of 22 L; and 4) heating at constant volume to its original temperature of 448 K. Find its efficiency. heat capacity is 21 J/K and the univer- sal gas constant is 0.08206 L atm/mol/K 8.314 J/mol/K. Assume that the

An engine using 1 mol of an ideal gas initially at 22 L and 448 K performs a cycle consisting of four steps: 1) an isothermal expansion at 448 K from 22 L to 35.2 L; 2) cooling at constant volume to 314 K; 3) an isothermal compression to its original volume of 22 L; and 4) heating at constant volume to its original temperature of 448 K. Find its efficiency. heat capacity is 21 J/K and the univer- sal gas constant is 0.08206 L atm/mol/K 8.314 J/mol/K. Assume that the

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)...

See similar textbooks

Similar questions

An ice cube at 0.0°C is slowly melting. What is the change in the ice cube’s entropy for each 5.80 g of ice that melts? Latent heat of fusion of ice is 333.7 J/g.
Consider the following thermodynamic cycle for an ideal gas: From A to B the gas is compressed adiabatically. From B to C heat Qh is added to the gas and the gas is kept at constant volume. From C to D the gas expands adiabatically. From D to A the gas ejects heat Q₁ to the environment and is kept at constant volume. (1) Draw the PV-diagram associated to this cycle. (2) Show that the efficiency of an engine running this cycle is given by e = 1 - (3) Calculate the efficiency for a compression ratio VA/VB = 8 assuming a diatomic gas. [Hint: for a diatomic gas Cv = (5/2)R.]
A particular power plant operates with a heat-source reservoir at 350°C and a heatsink reservoir at 30°C. It has a thermal efficiency equal to 55% of the Carnot-engine thermal efficiency for the same temperatures. What is the thermal efficiency of the plant? To what temperature must the heat-source reservoir be raised to increase the thermal efficiency of the plant to 35%? Again, η is 55% of the Carnot-engine value
Steam locomotives have an efficiency of 15.0% and operate with a hot steam temperature of 425°C. (a) What would the cold reservoir temperature (in °C) be if this were a Carnot engine? °C (b) What would the maximum efficiency of this steam engine be if its cold reservoir temperature were 150°C? %
Steam engines have boilers operating at 500K. The energy from a burning fuel converts water into steam and this steam then moves the piston. the temperature of the cold reservoir from the outside air is around 300K and the efficiency of both engines is 40%. to be able to increase the efficiency of the two machines again by increasing Th or by reducing Tc. Identify what factors cause an increase in engine efficiency in both engines and which are more effective in increasing engine efficiency?
p (kPa) Он 400 5) The figure shows a pV diagram for a cycle of a heat engine for which Q, = 25 J. What is the thermal efficiency of the engine? 200 (Hint: remember to convert cm³ to m³!) A) 17% B) 34% C) 8.5% D) 64% E) 40% 100 V (em³) 200
One of the most efficient engines ever built is a coal-fired steam turbine engine in the Ohio River valley, driving an electric generator as it operates between 1,870°C and 430°C. (a) What is its maximum theoretical efficiency? (b)Its actual efficiency is 42.0%. How much mechanical power does the engine deliver if it absorbs 1.35 ✕ 105 J of energy each second from the hot reservoir?
What is the Carnot efficiency (in percent) of a heat engine operating between the temperatures of 360°C (633 K) and 200°C (473 K)?
A heat engine operates between a reservoir at 15°C and one at 220°C. What is the maximum efficiency possible for this engine? Do you think the engine likely to achieve this efficiency?
Please Asap