On an annual basis, match the following terms with the proper value and unit for the following situation: Assume the energy required to produce a conventional steel vehicle (CV) is 100 million BTUs and that the conventional steel vehicle gets around 33 miles per gallon (mpg). Suppose an aluminum intensive vehicle (AIV) requires 15% more energy to produce than a conventional vehicle. However, the inclusion of aluminum in the body lightens the vehicle by 6% by mass, resulting in an increase of fuel economy from 33 mpg to 34 mpg. For both cars, assume a 15 year lifetime and 12,000 miles driven per year. Assume that the energy content of gasoline is 114,000 BTU/gallon and that the production of a gallon of gas requires 26,000 BTU.
CV annual gasoline use 364 galdyr
CV Ed
AIV Ed
CV Eiot (over its lifetime)
AIV Eiot (over its lifetime)
AIV Eic
CV Ei
Same problem as above (CV vs. AIV). Life cycle energy use is the total input of direct and indirect energy over the systems lifetime. What is the life cycle energy use for the CV in this problem.
Same problem as above (CV vs. AIV). What is the life cycle energy use for the AIV in this problem.
Same problem as above (CV vs. AIV). If it took 15% more energy for the end of life processes for the CV as compared to the AIV, which car would have LOWER life cycle energy use?