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A molten carbonate fuel cell (MCFC) costs approximately $1679 per kilowatt to build. By assuming the fuel cell has a serviceable lifetime of 5 years, what is the hardware cost per kilowatt- hour for this form of electricity generation? What other costs are involved in actually generating the electricity?

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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 14, Problem 43E
Textbook Problem
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A molten carbonate fuel cell (MCFC) costs approximately $1679 per kilowatt to build. By assuming the fuel cell has a serviceable lifetime of 5 years, what is the hardware cost per kilowatt- hour for this form of electricity generation? What other costs are involved in actually generating the electricity?

Interpretation Introduction

Interpretation:

The hardware costs perkillowatthour and others costs which are involved in the generation of electricity are to be calculated with given cost of MCFC and lifetime.

Concept Introduction:

Oxidation is the addition of an electronegative element or the removal of an electropositive element in a chemical reaction.

Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction.

A chemical reaction in which oxidation process and reduction process take place simultaneously is called a redox reaction.

An oxidizing agent is a substance that has the capacity to oxidize other substances and get reduced in a chemical reaction.

A reducing agent is a substance that has the capacity to reduce other substances and get oxidized in a chemical reaction.

The hydrogen-oxygen fuel cell is a device that generates electricity by the chemical reaction between a source fuel and an oxidant.

In a fuel cell, the chemical energy is directly converted into electricity by the oxidation of methane.

In conventional power plants where methane is used as a fuel, the electricity is generated by the oxidation of methane.

The three steps involved in the production of electricity are as:

chemicalenergy1heat energy2mechanical energy3electrical energy

The molten carbonate fuel cells use potassium carbonate as an electron transfer medium and methane is used as a fuel.

The total hours of operation are calculated as.

Thetotalhoursofoperation=Totalyears×hoursperday×daysperyear.

The hardware costs perkillowatthour are calculated as:

Thehardwarecosts=MCFCcostsThetotalhoursofoperation.

Explanation of Solution

Given information: The cost of MCFC is 1679perkillowatt and the serviceable lifetime is 5 years.

The total hours of operation are calculated as.

Thetotalhoursofoperation=Totalyears×hoursperday×daysperyear.

Substitute the value of total years, hours per day and days per year in the above expression.

Thetotalhoursofoperation=(year×365dayyear×24hourday)

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Chapter 14 Solutions

Chemistry In Focus
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