What is a drawback of using a biofuel-based energy system?

admin

试卷: LEED GA模拟题B[查看]
What is a drawback of using a biofuel-based energy system?
A: The lack of regulatory oversight
B: Fossil fuels must still be used to produce biofuels
C: Production is unreliable or inconsistent
D: These systems are not acceptable for LEED credits

参考答案: B

本题解释:
Biofuel based technologies use a renewable/recurring supply of organic material such as plant matter (biomass) to produce electricity. Bio-fuels are fuels derived from biomass. Bio-fuel systems reduce dependence on fossil fuels.

For LEED biofuels include:

untreated wood waste
agricultural crops or waste
animal waste
other organic waste
landfill gas

An issue with bioenergy is the amount of fossil fuel energy used to produce it. Bioenergy such as the burning of ethanol from corn, requires energy to produce the fuel.



Reference: LEED for Existing Buildings: Operations & Maintenance Reference Guide, Glossary