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7-19 A commercial district is currently heated by coal-burning heaters in winter with an average efficiency of 75 percent. The unit price of coal is $0.25/kg. It is proposed to heat this district by geo- thermal water. On an average winter day, hot geothermal water is supplied to the district at 80°C at a rate of 20 kg/s and returns at 60°C. How much revenue can be generated per year if the winter period can be taken to be equivalent to 3500 h of these average conditions, and geothermal heat is sold at the same price as coal?

7-19 A commercial district is currently heated by coal-burning heaters in winter with an average efficiency of 75 percent. The unit price of coal is $0.25/kg. It is proposed to heat this district by geo- thermal water. On an average winter day, hot geothermal water is supplied to the district at 80°C at a rate of 20 kg/s and returns at 60°C. How much revenue can be generated per year if the winter period can be taken to be equivalent to 3500 h of these average conditions, and geothermal heat is sold at the same price as coal?

Elements Of Electromagnetics
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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7-19 A commercial district is currently heated by coal-burning heaters in winter with an average efficiency of 75 percent. The unit price of coal is $0.25/kg. It is proposed to heat this district by geo- thermal water. On an average winter day, hot geothermal water is supplied to the district at 80°C at a rate of 20 kg/s and returns at 60°C. How much revenue can be generated per year if the winter period can be taken to be equivalent to 3500 h of these average conditions, and geothermal heat is sold at the same price as coal?
Transcribed Image Text:7-19 A commercial district is currently heated by coal-burning heaters in winter with an average efficiency of 75 percent. The unit price of coal is $0.25/kg. It is proposed to heat this district by geo- thermal water. On an average winter day, hot geothermal water is supplied to the district at 80°C at a rate of 20 kg/s and returns at 60°C. How much revenue can be generated per year if the winter period can be taken to be equivalent to 3500 h of these average conditions, and geothermal heat is sold at the same price as coal?
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