【摘要】 本文采用差示扫描量热仪（ＤＳＣ）对１４种含有不同挥发分的中国煤，在２０～１７０℃范围内测定了煤的比热，并校正为干燥无灰基煤的比热。结果表明，煤的比热随温度的变化和挥发分含量的不同而变化，依此建立了煤的比热和温度及挥发分含量的数学关联式。用此模型可以估计中国煤在２０～１７０℃范围内比热的值，其误差小于１０％。更多还原

【Abstract】 The specific heat of fourteen types of Chinese coals with different volatile matter contents were measured in the temperature range of 20～170℃ with the differential scanning calorimeter (DSC).The specific heat of coals were corrected on the basis of dry and ash free. The results of this study have showed that specific heat of coals were found to depend upon temperature and volatile matter contents.A mathematical model,relating specific heat,temperature and volatile matter,was proposed,which can be used to estimate the specific heat,of Chinese coals in the temperature range of 20～170℃ with an error less than 10%.更多还原