subject
Chemistry, 25.02.2020 02:22 vinniemccray70

A 250 MW (electricity) coal-fired power station burns coal with an energy density of 35M J/kg. This power station uses a coolant liquid which enters the cooling tower at a temperature of 68℉ and leaves at a temperature of 170.6 ℉ and flows through the cooling tower at the rate of 3716.8 L/s. The density of the coolant liquid is 1.11 g/mL and its specific heat capacity is 4599.5 J/Kg. K. (a) Calculate the energy removed by the coolant liquid each second. (b) Calculate the energy produced (in MW) by the combustion of coal each second. (c) Calculate the overall efficiency of the power station.(d) Calculate the mass of coal burnt each second.(e) If you assume that this coal has an empirical formula C5H4 and the reaction is a complete combustion, what is the volume of air required for this combustion per hour (in gal)? Assume that air contains 20% oxygen. Water_density = 1.429 g/L.

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 00:30
What must happen before a body cell can begin mitotic cell division
Answers: 2
question
Chemistry, 22.06.2019 19:00
How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
Answers: 1
question
Chemistry, 22.06.2019 20:50
What is the vapor pressure of a solution with a benzene to octane?
Answers: 2
question
Chemistry, 22.06.2019 21:30
Which statement are accurate about snow flakes
Answers: 1
You know the right answer?
A 250 MW (electricity) coal-fired power station burns coal with an energy density of 35M J/kg. This...
Questions
question
History, 11.12.2021 01:00
question
Mathematics, 11.12.2021 01:00
question
Chemistry, 11.12.2021 01:00
Questions on the website: 13722360