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智能微機量熱儀之煤炭質量的熱效應

发布时间：2014-06-03 点击次数：1523次

煤炭质量是指煤炭的物理、化学特性及其适用性，其主要指标有灰分、水分、硫分、发热量、挥发分、块煤限率、含矸率以及结焦性、粘结性等。煤炭质量
用于发电的煤炭质量的热效应

热值又称卡值或发热量。　

（一）在燃料化學中，表示燃料質量的一種重要指標。單位質量（或體積）的燃料完全燃燒時所放出的熱量。　通常用熱量計（卡計）測定或由燃料分析結果

算出。有高熱值和低熱值兩種。前者是燃料的燃燒熱和水蒸氣的冷凝熱的總數，即燃料完全燃燒時所放出的總熱量。後者僅是燃料的燃燒熱，即由總熱量減去冷凝熱的差數。常用的熱值單位，kJ/kg（固體燃料和液體燃料），或kJ/m^3（氣體燃料）。

发热量——发热量是锅炉设计的一个重要依据。由于电厂煤粉对煤种适应性较强，因此只要煤的发热量与锅炉设计要求大体相符即可。

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智能微機量熱儀之煤炭質量的熱效應

煤炭质量是指煤炭的物理、化学特性及其适用性，其主要指标有灰分、水分、硫分、发热量、挥发分、块煤限率、含矸率以及结焦性、粘结性等。 煤炭质量 用于发电的煤炭质量的热效应

煤炭质量是指煤炭的物理、化学特性及其适用性，其主要指标有灰分、水分、硫分、发热量、挥发分、块煤限率、含矸率以及结焦性、粘结性等。煤炭质量
用于发电的煤炭质量的热效应