Citation

Jenkins, B. M., and J. M. Ebeling, Correlation of physical and chemical properties of terrestrial biomass with conversion. Proc. from Energy from Biomass and Wastes IX: 371-403, 1985.

Abstract

Properties of biomass fuels influence the design of energy conversion systems in many ways. Properties important to the design of thermal and other types of biomass conversion systems include the heating value of the fuel and chemical composition of the fuel.

Proximate analyses and higher heating values for 62 kinds of biomass were determined. Ultimate elemental analyses for 51 kinds of biomass were also determined. Procedures used to perform the analyses are described. Six major categories of biomass were analyzed. They are 1.) field crop residues, 2) orchard prunings, 3) vineyard prunings, 4) food and fiber processing wastes, 5) forest residues, and 6) land based energy crops. Correlation models relating higher heating value to chemical composition were developed for five of the six categories and for three additional categories: 1) wood, 2) hulls and shells, and 3) all types of biomass. The simplest prediction model was developed for all 62 kinds of biomass and relates higher heating value to ash content, percent by weight dry basis. Other models relate ash and volatiles, carbon, and carbon, hydrogen, and oxygen concentrated to higher heating value.

Computational methods for using property data in thermodynamic calculations of air-fuel ratio, product gas volume and composition, heating value at constant volume, and flame temperature are presented. Methods for calculating a number of other parameters are also described.

Country, State, District, etc.

United States, California

Language

English

Material

rice straw, alfalfa seed straw, barley straw, bean straw, corn cobs, corn stover, cotton stalks, safflower straw, wheat straw, general

Use category

energy production