Question

(37) Problem 5: An electrical power station reques 1.5x 1014 of heat transfer into the one and has an efficiency of 38% at Status ere for Completed 33% Part (a) How much heat transfer occurs to the environment by the electical power station in ? Grade Summary De Pot 100 sin cos ( 7 8 9 tan CORO Submissions Attempts to 1o con cotho cotanto tacho Des R T e rtion perfet transfer to the n o t to work - Part ) What the ratio of 33% Perto How such work w do

Answer 1

part a)

heat transfers to enviroment = (1 - efficiency) * heat input

heat transfers to enviroment = (1 - 0.38) * 1.5 *10^14

heat transfers to enviroment = 9.3 *10¹³ J

part b)

ratio of heat transfer to work output = 9.3 *10^13/(0.38 * 1.5 *10^14)

ratio of heat transfer to work output = 1.63

the ratio of heat transfer to work output is 1.63

part c)

work done = 0.38 * heat input

work done = 0.38 * 1.5 *10^14

work done = 5.7 *10¹³ J