Consider a household that uses 14,000 kWh of electricity per year and 900 gal of fuel oil during...

Question:

Consider a household that uses 14,000 kWh of electricity per year and 900 gal of fuel oil during a heating season. The average amount of {eq}CO_2 {/eq}produced is 26.4 lbm/gal of fuel oil and 1.54 lbm/kWh of electricity. If this household reduces its oil and electricity usage by 15 percent by implementing some energy conservation measures, determine the reduction in the amount of {eq}CO_2 {/eq} emissions by that household per year

Energy Conservation:

Energy conservation is making efforts for decreasing the usage of energy by using fewer energy services. Conserving energy helps the planet and also saves money on energy services.

Answer and Explanation:


Given Data


  • Usage of electricity per year, {eq}14,000\;{\rm{kW}} {/eq}.
  • Fuel oil used per year, {eq}900\;{\rm{gal}} {/eq}.
  • Fuel oil used to produce {eq}{\rm{C}}{{\rm{O}}_2} {/eq}, {eq}26.4\;{\rm{lbm/gal}} {/eq}.
  • Electricity used to produce {eq}{\rm{C}}{{\rm{O}}_2} {/eq}, {eq}1.54\;{\rm{lbm/kWh}} {/eq}.
  • Reduction in oil and electricity, {eq}15\% {/eq} .


Calculating the amount of {eq}{\rm{C}}{{\rm{O}}_2} {/eq} produced by the consumption of fuel oil and electricity is,


{eq}\begin{align*} E &= 1.54 \times 14000 + 26.4 \times 900\\ E &= 45320\;{\rm{lbm}} \end{align*} {/eq}


Thus, the amount of emission or {eq}{\rm{C}}{{\rm{O}}_2} {/eq} produced is {eq}45320\,{\rm{lb}} {/eq}.


If household reduces its oil and electricity usage by {eq}15\% {/eq} , then the reduction in the amount of {eq}{\rm{C}}{{\rm{O}}_2} {/eq} emissions per year is,

{eq}R=45320 \times \dfrac{{15}}{{100}} = 6798\;{\rm{lbm}} {/eq}.


Thus, the amount of reduction in emission is {eq}6798\;{\rm{lbm}} {/eq}.


Learn more about this topic:

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What is Energy Conservation? - Definition, Process & Examples

from ICSE Environmental Science: Study Guide & Syllabus

Chapter 1 / Lesson 6
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