煤弹筒发热量的测量不确定度评定

摘要

为了保证煤弹筒发热量的准确测量,减少测量次数和降低测量成本,进行本次测量不确定度评定.不确定度评定结果表明:选择有证标准物质对量热仪热容进行标定是使测量结果更接近真实值的有效保证；样品的准确称量和较少次数的热容量标定过程是减少测量次数和降低测量成本的关键.%In order to ensure the accurate measurement of the bomb calorific value of coal, reduce the number of measurements and test costs, the uncertainty in measurement of bomb calorific value of coal was evaluated. The evaluated results show that calibrate the heat capacity of the calorimeter by certified reference material effective guarantee the results more closer to the real value, and the accurate weighing of samples and the smaller times of the heat capacity of the calorimeter is the key for reduce the number of measurements and testing costs.