热值作为衡量物质品质的一个重要物理数据,从能量角度为评价同类食品品质提供一种新思路和方法。利用氧弹量热计测定12种常见滋补类食品的热值,12种滋补类食品的热值范围在13.09~32.46 k J/g之间。量热计测定热值试验方法简单、操作简...热值作为衡量物质品质的一个重要物理数据,从能量角度为评价同类食品品质提供一种新思路和方法。利用氧弹量热计测定12种常见滋补类食品的热值,12种滋补类食品的热值范围在13.09~32.46 k J/g之间。量热计测定热值试验方法简单、操作简便、数据可靠。了解滋补类食品的热值对人群的膳食结构及对此类食品的加工利用、贮藏、食用等方面都具有一定的指导和参考意义。展开更多
Solid biomass fuels are useful and cost effective renewable energy source. The energy content of biomass is determined by its calorific value. The objective of this study was to determine experimentally the gross calo...Solid biomass fuels are useful and cost effective renewable energy source. The energy content of biomass is determined by its calorific value. The objective of this study was to determine experimentally the gross calorific value (GCV) of different agroforestry species and bio-based industry residues that could be used by: a) companies specialized in processing raw biomass solid biofuel production, b) small-scale consumers (households, medium-sized residential buildings, etc.). The fuel samples used were from agricultural residues and wastes (rice husks, apricot kernels, olive pits, sunflower husks, cotton stems, etc.), energy crops and wetland herbs (cardoon, switchgrass, common reed, narrow-leaf cattail), and forest residues (populus, fagus, pinus). The GCV of the bio-mass samples was experimentally determined based on CEN/TS 14918:2005, and an oxygen bomb calorimeter was used (Model C5000 Adiabatic Calorimeter, IKA?-Werke, Staufen, Germany). The GCV of different agroforestry species and residues ranges from 14.3 - 25.4 MJ?kg<sup>–</sup>1. The highest GCV was obtained by seeds and kernels due to higher unit mass and higher lipid content. Pinus sylvestris with moisture content 24.59% obtained the lowest GCV (13.973 MJ?kg<sup>–</sup>1).展开更多
文摘热值作为衡量物质品质的一个重要物理数据,从能量角度为评价同类食品品质提供一种新思路和方法。利用氧弹量热计测定12种常见滋补类食品的热值,12种滋补类食品的热值范围在13.09~32.46 k J/g之间。量热计测定热值试验方法简单、操作简便、数据可靠。了解滋补类食品的热值对人群的膳食结构及对此类食品的加工利用、贮藏、食用等方面都具有一定的指导和参考意义。
文摘Solid biomass fuels are useful and cost effective renewable energy source. The energy content of biomass is determined by its calorific value. The objective of this study was to determine experimentally the gross calorific value (GCV) of different agroforestry species and bio-based industry residues that could be used by: a) companies specialized in processing raw biomass solid biofuel production, b) small-scale consumers (households, medium-sized residential buildings, etc.). The fuel samples used were from agricultural residues and wastes (rice husks, apricot kernels, olive pits, sunflower husks, cotton stems, etc.), energy crops and wetland herbs (cardoon, switchgrass, common reed, narrow-leaf cattail), and forest residues (populus, fagus, pinus). The GCV of the bio-mass samples was experimentally determined based on CEN/TS 14918:2005, and an oxygen bomb calorimeter was used (Model C5000 Adiabatic Calorimeter, IKA?-Werke, Staufen, Germany). The GCV of different agroforestry species and residues ranges from 14.3 - 25.4 MJ?kg<sup>–</sup>1. The highest GCV was obtained by seeds and kernels due to higher unit mass and higher lipid content. Pinus sylvestris with moisture content 24.59% obtained the lowest GCV (13.973 MJ?kg<sup>–</sup>1).
