An inventor claims to have developed a power cycle operating between hot and cold reservoirs at 1175 K and 295 K, respectively, thatprovides a steady-state power output of (a) 27.27 kW, (b) 30.00 kW, while receiving energy by heat transfer from the hot reservoir atthe rate 150,000 kJ/h. Evaluate each claim.Part AWhat is the thermal efficiency for the conditions of case (a)? Is the inventor's claim possible for the conditions of case (a)?

Calculate the thermal efficiency of the Carnot engine operating between the given reserviors.…

Answered: An inventor claims to have developed a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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As shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a hot reservoir at TH and rejects energy Qc by heat transfer to a cold reservoir at Tc. Hot reservoir at TH Boundary- Cold reservoir 20 at Te (a) If TH = 1100 Kand Tc = 400 K, what is the thermal efficiency? (b) If TH = 500°C, Tc= 20°C, and Weycle = 1800 kJ, what are QH and Qc, each in kJ? (c) If n = 70% and Tc= 40°F, what is TH, in °F? (d) If n = 40% and TH = 1027°C, what is Tc, in °C?
Hey! This is open space, remember to check your document properties and give all of your images alt text! power cycle receives QH by heat transfer from a hot reservoir at TH = 1200 K and rejects energy Qc by heat transfer to a cold reservoir at Tc = 400 K. For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. a. QH = 900 kJ, Wcycle = 450 kJ b. QH = 900 kJ, QC = 300 kJ c. Wcycle = 600 kJ, QC = 400 kJ d. n = 75%
Q2/ A power cycle operating between two reservoirs receives energy Qi by heat transfer from a hot reservoir at T 1000K and rejects energy Q2 by heat transfer to a cold reservoir at Tz-200K For each of the following cases, determine whether the cycle operates reversibly, irreversibly, or is impossible. (a) QI = 500KJ, W 350KJ (b) Q1 = 1000KJ, Q2 200KJ (c) W= 800KJ, Q2 = 500KJ (d) 7 = 95 % %3D %3D
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
c) A heat engine operates between a source at 600 K and a sink at 300 K. Heat supplied by the source is 2094 kW. Evaluate the feasibility and nature of cycles when: i. 837 kW of heat is rejected ii. 1675 kW of heat is rejected iii. 1047 kW of heat is rejected ( (di yd
(A) the net heat energy absorbed during a cyclic process (the difference between heat flowing into the system and heat leaving the system) is the work. If we regard the atmosphere as a heat engine, what is the work being done by the atmosphere? That is, what phenomenon or phenomena are a realization of the work being done by the atmosphere? (B) Of all possible heat engines, the Carnot cycle has the maximum efficiency between any two operating temperatures (think of these temperatures as the maximum and minimum temperatures encountered during the cycle). Estimate the Carnot efficiency of Earth's atmosphere. [Hint: Think about the temperature variation with latitude.] (C) Do you think the efficiency of the real atmosphere would be "close" or "far" from the Carnot efficiency? Please explain your answer.
The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 40%. Evaluate the coefficient of performance of: (a) a reversible refrigeration cycle operating between the same two reservoirs. (b) a reversible heat pump cycle operating between the same two reservoirs.

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