An electric generator coupled to a windmill produces an average electric power output of 25 kW. The power is used to charge a storage battery. Heat transfer from the battery to the surroundings occurs at a constant rate of 2.5 kW. Determine, for 8 hours of operation (a) the total amount of energy stored in the battery, in kJ. b) the value of the stored energy, in $, if electricity is valued at $0.08 per kWh.
An electric generator coupled to a windmill produces an average electric power output of 25 kW. The power is used to charge a storage battery. Heat transfer from the battery to the surroundings occurs at a constant rate of 2.5 kW. Determine, for 8 hours of operation (a) the total amount of energy stored in the battery, in kJ. b) the value of the stored energy, in $, if electricity is valued at $0.08 per kWh.
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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An electric generator coupled to a windmill produces an average electric power output of 25 kW. The power is used to charge a storage battery. Heat transfer from the battery to the surroundings occurs at a constant rate of 2.5 kW. Determine, for 8 hours of operation
(a) the total amount of energy stored in the battery, in kJ.
b) the value of the stored energy, in $, if electricity is valued at $0.08 per kWh.
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