关于热值标准热值测试标准GBT 14402，BS EN ISO 1716。
Adiabatic calorimeter 绝热型氧弹由于内外筒水温相等，两者之间无热传递，无需测量修正，理论上更准确，价格高。
In an adiabatic calorimeter the temperature in the outer vessel (Tov) is equal to the temperature of the inner vessel (Tiv) throughout the experiment. This is as close to a “perfect isolation” as possible. The influence of the environment has to be minimalized using air-condition to keep the room temperature as constant as possible. No correction calculations need to be done compared to the isoperibolic calorimeter.
isoperibol calorimeter 恒温型
外筒水温恒定，所以测试要修正’温差‘影响，相对精度低些，优势是价格低。
In an isoperibol calorimeter the temperature in the outer vessel (Tov), is kept constant throughout the experiment.如何保持恒温？ This does not allow a “perfect isolation”. There are still small temperature exchanges. The influence of the environment has to be minimalized by using air-condition to keep the room temperature as constant as possible. 测试房间空调要尽量维持恒温 A correction factor 修正系数 (Regnault-Pfaundler = ξ) will be calculated after the experiment that takes these temperature exchanges into account.
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