电热法测量热功当量实验的新探究  

A new exploration in determination of mechanical equivalent of heat by electrothermal method

作　　者：蔡晨[1] 李朝荣[1] 李英姿[1] 王选[1] 

机构地区：[1]北京航空航天大学物理科学与核能工程学院,北京100191

出　　处：《大学物理》2016年第5期53-56,共4页College Physics

摘　　要：提出一种新的实验方案来处理电热法测量热功当量实验中装置的散热问题.采用积分法计算热功当量,求得的热功当量数值更加接近理论值,并且一元线性拟合实验数据时得到的线性关系非常强烈.A new experimental method is proposed to resolve the heat dissipation problem of the device in determination of mechanical equivalent of heat by electrothermal method. Based on integral method,the result of mechanical equivalent of heat is more close to the theoretical value,and the data exhibits strong linear relationship through simple linear regression.

关 键 词：热功当量 散热系数 线性回归 相关系数 

分 类 号：O43[机械工程—光学工程]