用恒流量热器测定水的比热容  

Determination of the specific heat capacity of water using a constant flow calorimeter

作　　者：刘传安[1] 罗小凤[2] 

机构地区：[1]宜春学院理学院,江西宜春336000 [2]宜春学院医学院,江西宜春336000

出　　处：《大学物理》2006年第4期39-41,44,共4页College Physics

摘　　要：介绍了用恒流量热器测定水的比热容的一种新方法.当达到稳定状态时,电阻丝中电流产生的热量等于流过的水吸收的热量与散逸到环境中的热量之和,利用两次独立的实验消去了散逸到环境中的热量这一未知因素,从而使实验结果的准确度得到显著地提高.A new method which measures specific heat of water with a constant flow calorimeter is reported. When the steady state is established, the amount of heat generated by the current in the wire equals that received by the passing water and lost to the surroundings. Two separate experiments eliminated the unknown factor of the heat lost to the surroundings. The accuracy of the experimentresult is rising up notably.

关 键 词：比热容 恒流量热器 恒水压装置 热最 温差电偶 

分 类 号：O551.1[理学—热学与物质分子运动论]