Need ASAP thank youu A power cycle operating at steady state receives energy by heat transfer at arate QH at TH = 1800 K and rejects energy by heat transfer to a cold reservoirat a rate Oc at Tc = 600 K. For each of the following cases, determine whetherthe cycle operates reversibly, operates irreversibly, or is impossible.(a) QH =(500) kW, Oc = (100) kW(b) Qµ = (500)kW, Wcycle = (250)kW, Oc = (200)kW(c) W cycle(450)kW, Oc = (150)kW(d) QH = (500)kW, Oc(200)kW

Answered: Image /qna-images/answer/c7e5e0af-e07b-4d49-8c16-df7129db4ba4.jpg

Answered: A power cycle operating at steady state…

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

Determine the Efficiency, in %, of a simple rankine cycle. Use: 8 MPa and 480 C (Table 3. Vapor) h1 = 3348.4 kJ/kg s1 = 6.6586 kJ/kg – K 2 MPa (Table 3. Vapor; note: s1 = s2) h2 = 2963.145 kJ/kg 2 MPa and 460 C (Table 3. Vapor; note: s3 = s4) h3 = 3379.5 kJ/kg s3 = 7.3147 kJ/kg – K 60C (Table 1. Saturation Temperatures) P5 = 0.019940 MPa = 19.94 kPa hf = 251.13 kJ/kg = h5 hfg = 2358.5 kJ/kg sf = 0.8312 kJ/kg – K sfg = 7.0784 kJ/kg – K vf = 0.0010172 m3/kg = v5 Solving for h4 s3 = s4 = sf + xsfg 7.3147 kJ/kg – K = 0.8312 kJ/kg – K + x (7.0784 kJ/kg – K) x = 0.9159555832 h4 = hf + x(hfg) h4 = 251.13 kJ/kg + 0.9159555832 (2358.5 kJ/kg) h4 = 2411.411243 kJ/kg Solving for h6 h6 = v5 (P6 – P5) + h5 h6 = 0.0010172 m3/kg (8000 kN/m2 – 19.94 kN/m2) + 251.13 kJ/kg h6 = 8.117317032 kJ/kg + 251.13 kJ/kg h6 = 259.247317 kJ/kg
At steady state, a power cycle develops a net power output of 20kW while receiving energy by heat transfer at a rate of 20kJ per cycle of operation from a source at a temperature T. The cycle rejects energy by heat transfer to cooling water at a lower temperature of 540 K. If there are 190 (engine thermodynamic) cycles per minute, what is the minimum theoretical value for T, in K?Note: mm is the last
A system undergoes a power cycle while receiving 1450 kJ by heat transfer from a thermal reservoir at a the temperature of 780 K and discharging 560 kJ by heat transfer to a thermal reservoir at (a) 250 K, (b) 380 K, (c) 460 K. For each case, determine whether the cycle operates irreversibly, operates reversibly, or is impossible.
At steady state, a reversible heat pump cycle discharges energy at the rate Q˙H to a hot reservoir at temperature TH, while receiving energy at the rate Q˙C from a cold reservoir at temperature TC.(a) If TH = 10°C and TC = 2°C, determine the coefficient of performance.(b) If Q˙H= 15 kW, Q˙C= 8.75 kW, and TC = 0°C, determine TH, in °C.(c) If the coefficient of performance is 5 and TH = 27°C, determine TC, in °C.
Two reversible cycles operate between hot and cold reservoirs at temperatures TH and TC, respectively. (a)If one is a power cycle and the other is a refrigeration cycle, what is the relation between the coefficient of performance of the refrigeration cycle and the thermal efficiency of the power cycle? (b)If one is a refrigeration cycle and the other is a heat pump cycle, what is the relation between their coefficients of performance?
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle starting at the beginning of the isothermal expansion are, V1 = 10.10 li, V2 = 14.53 li, V3 = 226.54 li, and V4 = 157.73 li. The cycle receives 21.5 kJ of heat. Determine (a) the net work, (b) the mean effective pressure, and (c) the thermal efficiency of the cycle.
3. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion ,are V1 = 10.10, V2 = 14.53, V3 = 226.54 ,and V4 = 157.73L. The cycle receives 21.1 KJ of heat. Determine a) the work and b) the mean effective pressure.
At steady state, a refrigeration cycle removes 800 kJ/min of energy by heat transfer from acold space maintained at -15o C and discharges energy by heat transfer to its surroundings at20o C. If the coefficient of performance of the actual cycle is 80 percent of that of areversible refrigeration cycle (ideal) operating between thermal reservoirs at these twotemperatures (β = 0.80 βmax), determine:a) Coefficient of performance;b) Power input to the cycle, in kW;c) Heat rejected to the surroundings.Draw sketch and show all calculations.
At steady state, Refrigerant 22 enters (1) the compressor at 40C, 5.5bar and is compressed to 60C, 13.8bar. R-22 exiting (2) the compressor enters a heat exchanger where energy transfer to air as a separate stream occurs and the refrigerant exits (3) as a liquid at 13.5bar, 32C. Air enters (4) the condenser at 27C, 1.0bar with a volumetric flow rate of 21.2m3/min and exits (5) at 43C. Assuming ideal gas behavior for the air and stray heat transfer and kinetic and potential energy effects are negligible, determine the compressor power
2. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion, are V, = = 10.10 L, V, = 14.53 L, V, = 226.54 L, and V, = 157.73 L. The cycle receives 21.1 kJ of heat. Determine (a) the work and (b) the mean effective pressure.
Find the cycle entropy production and answer if it operates irreversibly, reverisbly, or impossibly. A system executes a power cycle while receiving 1000 kJ by heat transfer at a temperature of 500 K and discharging energy by heat transfer at 300 K. Determine the cycle entropy production if the cycle thermal efficiency is 25% in kJ / K. Enter the answer without units, but with a minus sign if applicable. This cycle operates irreversibly reversibly impossibly.
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion, are V, 10.10 L,V,-14.53 L,V,-226.54 L, and V, 157.73 L. The cycle receives 21.1 kJ of heat. Determine (a) the work (b) and the mean effective pressure.

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