A large heat pump cools the river with a temperature of 223.15 K and flow of 10 m³/s by 3.0 K. The received heat is transferred to the hot water system with a temperature of 313.15 K. a) How much heat power does it gain in this way? (The solution is 126 MW) b) For how many inhabitants does the heating system suffice if each inhabitant needs 500 W of power for heating? (The solution is 250 000) c) How much electrical power does the pump need if the total losses are twice as large as for the equivalent Carnot machine? (The solution is 23 MW)
A large heat pump cools the river with a temperature of 223.15 K and flow of 10 m³/s by 3.0 K. The received heat is transferred to the hot water system with a temperature of 313.15 K. a) How much heat power does it gain in this way? (The solution is 126 MW) b) For how many inhabitants does the heating system suffice if each inhabitant needs 500 W of power for heating? (The solution is 250 000) c) How much electrical power does the pump need if the total losses are twice as large as for the equivalent Carnot machine? (The solution is 23 MW)
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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A large heat pump cools the river with a temperature of 223.15 K and flow of 10 m³/s by 3.0 K. The received heat is transferred to the hot water system with a temperature of 313.15 K.
a) How much heat power does it gain in this way? (The solution is 126 MW)
b) For how many inhabitants does the heating system suffice if each inhabitant needs 500 W of power for heating? (The solution is 250 000)
c) How much electrical power does the pump need if the total losses are twice as large as for the equivalent Carnot machine? (The solution is 23 MW)
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