Question 6Compare the carbon emissions per MJ to heat household water using the following twoenergy systems:a) A 25% efficient coal-fired power plant delivering electricity to a 99% efficientelectric water heater. Assume LHV carbon intensity of coal is 25.8 gC/MJ.b) A new 50% efficient natural gas-fired combined cycle power plant to a 99%efficient electric water heater. You must calculate the LHV carbon intensity ofnatural gas. Assume 100% methane and ideal conditions.Assume 5% losses in electrical transmission lines and 90 MJ of fuel input to each system.

Given:Plant efficiency (η) = 25%Water heater efficiency = 99%Coal carbon intensity (CI), LHV = 25.8…

Answered: Question 6 Compare the carbon emissions…

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) Consider a cycle with n moles of diatomic gas illustrated in the PV diagram below. Assume the gas is ideal and that AB is an isotherm. a) Complete the chart below in terms of n, R, Temperature and Volume. b) Determine the efficiency. c) Find the Carnot efficiency for a cycle operating between these temperatures. P Isotherm B. C V V. AEint Qin WBy АВ BC СА cycle
0 Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when the average outdoor temperature remains at about 2°C, the house is estimated to lose heat at a rate of 55,000 kJ/h. The heat pump consumes 4.8 kW of power while operating. 55,000 kJ/h Determine the total heating costs, assuming an average price of $0.11/kWh for electricity. The total heating cost is $40.33 (You must provide an answer before moving to the next part.)
! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when the average outdoor temperature remains at about 2°C, the house is estimated to lose heat at a rate of 55,000 kJ/h. The heat pump consumes 5.15 kW of power while operating. HP 25°C 2°C 55,000 kJ/h How long did the heat pump run on that day?

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