Q1: A particular power plant operates with a heat-source reservoir at 370°C and a heat sink reservoir at 50°C. It has a thermal efficiency equal to 60% of the Carnot- engine thermal efficiency for the same temperatures. (a) What is the thermal efficiency of the plant? (b) To what temperature must the heat-source reservoir be raised to increase the thermal efficiency of the plant to 40%? Again n is 60% of the Carnot-engine value. (c) For part (a) If the discarded heat is 2000000kw what is the work?

Q1: A particular power plant operates with a heat-source reservoir at 370°C and a heat sink reservoir at 50°C. It has a thermal efficiency equal to 60% of the Carnot- engine thermal efficiency for the same temperatures. (a) What is the thermal efficiency of the plant? (b) To what temperature must the heat-source reservoir be raised to increase the thermal efficiency of the plant to 40%? Again n is 60% of the Carnot-engine value. (c) For part (a) If the discarded heat is 2000000kw what is the work?

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

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Question

Q1: A particular power plant operates with a heat-source reservoir at 370°C and a
heat sink reservoir at 50°C. It has a thermal efficiency equal to 60% of the Carnot-
engine thermal efficiency for the same temperatures.
(a) What is the thermal efficiency of the plant?
(b) To what temperature must the heat-source reservoir be raised to increase the
thermal efficiency of the plant to 40%? Again n is 60% of the Carnot-engine value.
(c) For part (a) If the discarded heat is 2000000kw what is the work?
Q2: Calculate Z for ammonia at 320 K and 15 bar by (c) The second virial
coefficient equation (d) The Soave/Redlich/Kwong equation.

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