摘要
Abstract
In this paper, survey data of transaction coal between Shenhua Trading Group Limited and users was researched, the laboratory simulation conditions should be established to do the experimental research, how temperature and humidity differences of the laboratories affected the calorific value was analyzed, when the buyers and the sellers appeared larger deviation of the calorific value, the variation law of time, temperature, humidity and other parameters in the coal quality testing of different types of Shenhua coal was summarized .The results showed that for South and North, calorific value have larger difference at winter when the temperature and humidity were quite different.Big temperature and humidity differences in winter would make the measured value difference of dry basis gross calorific value between South and North relatively big, confidence interval was - 259 J/g ~ 109 J/g; in summer and autumn, the measured value difference of dry basis gross calorific value between South and North was relatively small, confidence intervals were -79 J/g~138 J/g、 -125 J/g~79 J/g.关键词
煤炭/发热量/温度/湿度/测定误差/采样精密度Key words
coal/calorific value/temperature/humidity/measurement error/sampling precision分类
化学化工
