量热器内筒材料的选择

• 作 者: 杨修文 路素彦
• 机 构: 湖北省郧阳师范高等专科学校物理系,湖北省郧阳师范高等专科学校物理系,湖北省郧阳师范高等专科学校物理系 442700,442700,442700
• 出 处: 湖北中小学实验室
• 发表日期: 2004年期
• 关键词: 内筒 金属块 高温物体 比用 热量比 传热方式 机械强度 导热系数 导热板 使内

1　原理与讨论1 1　热损失好的量热器 ,从结构上讲要保证交换只在系统内部进行 ,尽量减少由于传导、对流、辐射等方式使量热器向外界散发热量。因此通常量热器的外筒采用热的不良导体———瓷器制成 ,内筒用不易导热的材料垫起 ,使内、外筒间保留一些空气作为隔热层 ;在筒的上

1 Principles and Discussion 1 Heat loss good calorimeter, from the structural point of view to ensure that the exchange only in the system to minimize the use of conduction, convection, radiation, etc. to make the calorimeter to the outside world to dissipate heat. Therefore, the outer cylinder of the calorimeter is usually made of a poor conductor of heat, which is made of porcelain. The inner cylinder is cushioned with a material that does not easily conduct heat, so that some air is retained between the inner and outer cylinders as a heat-insulating layer;