Biomass energy from wood chips: Diesel fuel dependence?

被引:30
|
作者
Timmons, Dave [1 ]
Mejia, Cesar Viteri [1 ]
机构
[1] Univ Massachusetts, Dept Resource Econ, Amherst, MA 01003 USA
关键词
Woody biomass; Wood chips; Biomass transportation; Net energy ratio; Biomass electricity; COMBUSTION; SYSTEMS; COST;
D O I
10.1016/j.biombioe.2010.04.010
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Most renewable energy sources depend to some extent on use of other, non-renewable sources. In this study we explore use of diesel fuel in producing and transporting woody biomass in the state of New Hampshire, USA. We use two methods to estimate the diesel fuel used in woody biomass production: 1) a calculation based on case studies of diesel consumption in different parts of the wood chip supply chain, and 2) to support extrapolating those results to a regional system, an econometric study of the variation of wood-chip prices with respect to diesel fuel prices. The econometric study relies on an assumption of fixed demand, then assesses variables impacting supply, with a focus on how the price of diesel fuel affects price of biomass supplied. The two methods yield similar results. The econometric study, representing overall regional practices, suggests that a $1.00 per liter increase in diesel fuel price is associated with a $5.59 per Mg increase in the price of wood chips. On an energy basis, the diesel fuel used directly in wood chip production and transportation appears to account for less than 2% of the potential energy in the wood chips. Thus, the dependence of woody biomass energy production on diesel fuel does not appear to be extreme. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1419 / 1425
页数:7
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