1. Consider a Carnot cycle executed in aclosed system with air as the working fluid.The maximum pressure in the cycle is 1300kPa while the maximum temperature is 950K. If the entropy increase during theisothermal heat rejection process is 0.25kJ/kg-K and the network output is 100 kJ/kg,knowing that R= 0.287 kJ/kg.K and y= 1.4determine the minimum temperature in thecycle:Oa) 520 Kb) 530 KOc) 630 Kd) 4270 Ke) None of above

Answered: Image /qna-images/answer/04e2bf5c-7cef-443b-a2c7-9610827e6345.jpg

Answered: 1. Consider a Carnot cycle executed in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Find the entropy production and determine if the cycle operates irreverisbly, reverisbly, or impossibly. A refrigeration cycle operates between the freezer compartment at 268K and the ambient air at 295K. The rate of heat transfer from the freezer compartment is 8000 kJ/h and the power input for the cycle is 3200 kJ/h. Determine the entropy production for this cycle in kJ/K·h (do not convert h to s). Enter the answer without units, but with a minus sign if applicable. This cycle operates irreversibly reversibly impossibly.
II. Draw the Carnot cycle then prove that the efficiency of a Carnot heat engine is nc=1- TL TH
The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cubic feet and the pressure is 300 psi. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90 degrees Fahrenheit . NOTE: Indicatethe pV and TS planes Find: - QA(heat added) - QR(heat rejected) - MEP(cycle mean effective pressure) -the ratio of expansion during the isentropic process - the overall ratio of compression.
1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q,, (b) Q, (c) V, (d) p,, (e) V,, (f) P, (g) p (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression. m Ans. (a) 346.4 Btu; (b) -209.1 Btu; (c) 63.57 cu ft; (d) 25.64 psia; (e) 31.79 cu ft; (f) 51.28 psia; (g) 13.59 psia; (h) 3.53; (8) 7.06
1. In a Carnot cycle operating on nitrogen, the heat supplied is 40 BTU and the adiabatic expansion ratio is 12.5. If the receiver temperature is 60F, determine; a. The thermal efficiency b. The work c. The heat rejected 2. There are developed 10hp by a Carnot engine between 1000F and 100F. Determine; a. The thermal efficiency b. The heat supplied per seconds c. The change in entropy each second during heat rejection
1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q, (b) Qg, (c) Va, (d) p, (e) V,, (f) p,, (g) p, (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression. Ans. (a) 346.4 Btu; (b) -209.1 Btu; (c) 63.57 cu ft; (d) 25.64 psia; (e)31.79 cu ft; (f) 51.28 psia; (g) 13.59 psia; (h) 3.53; (8) 7.06
3. Sketch the Carnot cycle on a P-V digram and derive the expression for thermal efficiency of an ideal Carnot cycle
1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of Isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q. (b) Qn. (c) V½. (d) pr, (e) V4, (1) pa. (R) pr. (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression. Ans. (a) 346.4 Blu; (h) -209,1 Bu; (c) 63.57 cu ft; (d) 25.64 psia: (e) 31.79 cu ft; () 51.28 psla; (g) 13.59 psia; (h) 3.53; (1) 7.06
1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q,, (b) Q, (c) V3, (d) pg, (e) V,, (f) P,, (g) pm, (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression.
1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q, (b) Qg, (c) V, (d) p3, (e) V,, (f)p,, (g) pm (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression. Ans. (a) 346.4 Btu; (b)-209.1 Btu; (c) 63.57 cu ft; (d) 25.64 psia; (e)31.79 cu ft; (f) 51.28 psia; (g) 13.59 psia; (h) 3.53; (8) 7.06
A young inventor has proposed a three-process internal combustion cycle. According to the patent application, the cycle consists of an isentropic compression process (1-2), an isothermal heat addition process (2-3), and a constant volume heat rejection process (3-1). Assuming that the working fluid is air with constant properties (Table A.5) and that the inlet temperature and pressure is 25℃ and 100 kPa respectively, plot and label the cycle on the temperature-entropy (T-s) and pressure-volume (P-v) diagram and calculate the following quantities for a compression pressure ratio of 10. (a) maximum air cycle temperature(b) heat added to the working fluid (c) net work for the cycle(d) cycle efficiency(e) thermal efficiency for a Carnot cycle operating between the same temperature difference
An engine works on the basis of Carnot cycle operating between temperatures of 800 K and 400 K. If the heat supplied is 100 kW, the output is

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS