The usual method of the geophysical well logging to determine coal quality parameters is an equivalent volume model, which can not describe suitablely the complex physical structure. 煤层气储层物理结构以及煤层气的存储、运移等方面不同于常规天然气,评价煤质参数的测井等效体积模型难以较好地描述煤层这种复杂的物理结构。
The coal miner's equivalent of turning straw into gold, liquid coal enables cars, trains and even jets designed to burn oil to run on coal instead. 对采煤者,液体煤等于点石成金,使原本燃烧石油的汽车、火车,甚至飞机能转而烧煤。
Estimates that 100 million tons standard coal equivalent should be saved in civil building sector by 2010. Suggests several options on heat transfer of building envelopes, equipment and system efficiency, mitigation of greenhouse gas emission and energy consumption labelling of residential buildings to achieve the goal. 估算出2010年建筑节能量约为1亿t标准煤,为实现这一建筑节能目标,建议针对围护结构传热、系统设备能效、温室气体减排、住宅能耗标识的建立等关键问题采取相应措施。
In this article, some models had been built through analyzing the inter-relationship among biomass per m2, area of biomass having standard coal equivalent ( SCE) and cost of producing woody fuel. 该文通过对中国能源林树种的单位面积生物量与产单位标煤热值生物量所需土地的面积及生产木质燃料所需成本三者之间的关系进行分析,在三者之间建立数学模型;
As to the energy generation system, taking coal combustion as an example, after combustion the main pollutants are analyzed in details, and then the environment impact is evaluated with the equivalent evaluation in the chemical process system. 对于能量产生系统,以煤燃烧为例,对燃烧后的主要污染物进行了详细地分析和计算,并利用工艺流程系统中的当量评分来计算环境的影响。
Abstract The result of triaxial compression test of coal under different surrounding pressures and porous gas pressures showed that equivalent porous pressure coefficient ( d) was a bilinear function of volume stress and porous pressure. 通过不同围压、不同孔隙瓦斯压力下煤的三轴压缩试验结果,证明了等效孔隙压力系数(α)是体积应力与孔隙压力的双线性函数。
Because the measurement of the burnout time of a coal char particle is easy and accurate, the data of the equivalent mass diffusivities so obtained should be reliable. 由于煤焦粒的燃烬时间的测定较准确,因此所得之等效扩散系数较可靠。
We take coal combustion heat value for 29306kJ/ kg, so the recovery heat is equivalent to 17000 tons coal. 取标煤的燃烧热值为29306kJ/kg,则所回收余热量相当于年节约标煤1.7万吨。