A boiler that supplies the steam turbine of a Carnot cycle must raise the temperature of 20 m3 water from the 35°C through a physical change of phase, into steam at 175°C. The carnot engine is 40% efficient. a) Calculate the mass of the water at 35°C and the mass of steam generated. b) Determine the total heat energy (in kJ) that must be supplied to the boiler to generate the steam c) If the heat supplied to the boiler is 60,000 kJ: determine the work output from the cycle. d) The pressure of steam at 175°C is 9 bars. If the pressure is reduced isothermally to 7 bars, what will be the phase ?

A boiler that supplies the steam turbine of a Carnot cycle must raise the temperature of 20 m3 water from the 35°C through a physical change of phase, into steam at 175°C. The carnot engine is 40% efficient. a) Calculate the mass of the water at 35°C and the mass of steam generated. b) Determine the total heat energy (in kJ) that must be supplied to the boiler to generate the steam c) If the heat supplied to the boiler is 60,000 kJ: determine the work output from the cycle. d) The pressure of steam at 175°C is 9 bars. If the pressure is reduced isothermally to 7 bars, what will be the phase ?

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

Calculate thermal efficiency (e) of a heat engine which extracts 2000 J ofenergy from a hot reservoir and transfer 1000 J to a cold reservoir, during oncecycle?
Consider two heat engines that take in the same amount of thermal energy from their hot reservoirs in each cycle, but send different amounts of thermal energy to their cold reservoirs in each cycle. Which of the two engines is the more efficient one? a) The engine that sends less energy to the cold reservoir. b) The engine that sends more energy to the cold reservoir. c) Actually, their efficiencies would be the same.
In the following situations, find the change in the internal energy of the system. a) A system absorbs 450 J of heat, and at the same time does 210 J of work. b) 750 J of heat is removed from a gas that is held at constant volume.
Based on the figure, what is the heat rejected by the engine in a cycle? P (N/m?) Q, -1.000 joule 900K 450K V (m) O 1000 O 750 250 O 500
A -> B isovolumetric transformation from pressure Pa and Volume Va to pressure Pb = 2 Pa B ->C: Isobaric expansion from volume Va to volume Vb = 3 Va C -> D: isovolumetric transformatio down to pressure Pd = Pa D -> A: isobaric compression
L> A Click Submit to complete this assessment. Question 12 A heat engine performs 264 J of work in each cycle and has an efficiency of 0.2%. For each cycle, how is expelled as heat?
1st and 2nd Law of thermodynamics Worksheet 1. A car engine deliver 8.2 kJ of work per cycle. Its efficiency is 25%. A) How much heat is absorbed and how much heat is exhausted from its fuel combustion? B) The car is now tuned and its efficiency goes to 31%. What are the new values of heat absorbed and heat exhausted? 1 of 3
In a Carnot cycle if the heat added is 570 J and the heat rejected is 180 J then what is the work net? O 570 J O 3.17 J O 390 J
During one full engine cycle: 1. 60 J of work are done on the system 2. 200 J of heat are added to the system 3. 90 J of work are done by the system How much energy is lost as heat over the cycle?
Problem #8 In one cycle of an engine, 1.80 kJ of energy is absorbed from a hot reservoir at 280°C, and 1.15 kJ of energy is expelled to a cold reservoir at 25.0°C. a) How much work (in J) is done by the engine in each cycle? b) What is the engine's efficiency? c) How does this compare to the Carnot Efficiency?
QUESTION 4 In a single cycle, heat engine extracts 8.00 kcal of heat from a hot reservoir and exhausts 5.00 kcal of heat int a cold reservoir. What is the efficiency of this engine? а. 67.5% b. 77.5% C. 57.5% d. 47.5% е. 37.5%
Determine the change in energy in the system in the following three processes: a. The system absorbs 400 cal of heat, and at the same time do 400 J of work; b. The system absorbs 420 cal of heat, and at the same time work 420 J was done to him; c. 1200 cal of heat is removed from a gas at constant V