(13%) Problem 5: This problem compares the energy output and heat transfer to the environment by two different types of

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13 Problem 5 This Problem Compares The Energy Output And Heat Transfer To The Environment By Two Different Types Of 1 (93.76 KiB) Viewed 47 times

(13%) Problem 5: This problem compares the energy output and heat transfer to the environment by two different types of nuclear power stations-one with the normal efficiency of 31 %, and another with an improved efficiency of 46 %. Suppose both have the same heat transfer into the engine in one day, 2.55 x 10¹4 J. ▷ 50% Part (a) How much more electrical energy is produced by the more efficient power station? W = || tan() sin() cos() cotan() asin() acos() cosh() atan() acotan() sinh() tanh() cotanh() Degrees O Radians Submit Hint T() 7 89 HOME EMA 4 5 6 / * 1 2 3 + END 0 VO BACKSPACE DEL CLEAR Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 1 50% Part (b) What is the change in the heat transfer to the environment after the upgrade to the more efficient power station? Feedback: 0% deduction per feedback. Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 19 (0% per attempt) detailed view 1 0%
(13%) Problem 6: A heat engine receives an amount of energy Q₁ = 750 kJ by heat transfer from a high temperature thermal reservoir at Th=910 K. Energy is rejected by heat transfer to a lower temperature thermal reservoir at T₁ = 560 K. If waste heat in the amount of Q₁ = 130 kJ is rejected to the low temperature thermal reservoir during each cycle answer the following questions. ▷ 33% Part (a) Solve for the maximum theoretical efficiency that an engine in this situation could operate with. nmax= sin() cos() asin() cotan() atan() acotan() cosh() tan() П ( acos() E MAAL sinh() tanh() cotanh() Degrees O Radians Hints: 0 for a 0% deduction. Hints remaining: 0 Submit Hint 7 8 9 4 5 6 1 2 3 + 0 END VO BACKSPACE DEL CLEAR Feedback * HOME I give up! Feedback: 0% deduction per feedback. A 33% Part (b) Solve for the actual efficiency that the engine is operating with. A 33% Part (c) Which of the following best describes the manner in which the cycle is operating? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 19 (0% per attempt) detailed view 1 0%