Class Management I Help 11:59:00 AM End Date: 5/3/2017 11:59 Ch. 15 Homework (ex

Question

Class Management I Help 11:59:00 AM End Date: 5/3/2017 11:59 Ch. 15 Homework (extra credit) Begin Date 4W72017200 00 PM Due Date: 53/2017 thermal 4%) 6: A heat engine receives an amount of energy eh- Tsoku by heat transfer from a high tem waste heat in Problem lower temperature thermal reservoir at T-560 K If questions reservoir at Th 950K Energy is rejected by heat transfer to a answer the following the amount of ei-140 k is ejected to the low temperature thermal reservoir during each cycle 33% Part (a) solve for the maximum theoretical efficiency that an engine in this situation could operate with Grad Dedt nman" Poten Subr Atter cotan0 asin0. 1 2 3 at ano acotano sinho deta Degrees Radians I give up Feedback deduction per feedback Hints: 0 for a 0 deduction. Hats remauung 4 33% Part b) Solve for the actual efficiency that the engine is operating with 33% Part (c) Which of the following best describes the manner in which the cycle is operating? All cootent 201 Expen TALLC

Explanation / Answer

Part a )

the maximum theoretical efficiency = 1 - Qc / Qh

= 1 - 140 / 780

= 1 - 0.1794

= 0.8205

or 82.05 %

Part b )

actual efficiency is = 1 - Tc / Th

= 1 - 560 / 950

= 0.4105

or

41.05 %

Part c )

it is a reversible cycle..

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