论文部分内容阅读
燃烧发生后,是怎样进行、扩大和蔓延的呢?燃烧热的传播方式大体可分为传导、对流、辐射三种。实际上,燃烧的扩展,火灾的蔓延,都是通过这三种形式传播的,很少以单独形式进行。 (1)传导 热从一个物体或相互接触的数种物体的高温部分传向低温部分的现象就称为传导。热的传导与温度差成正比。在稳定状态下,热的传导量可用下式来表示。式中,Q:热的传导量(Kcal)
After the occurrence of the burning, how is it going to be expanded and spread? The modes of transmission of the burning heat can be roughly divided into conduction, convection and radiation. In fact, the expansion of the fire and the spread of the fire are all transmitted through these three forms, and seldom take place in isolation. (1) Conduction Heat The transfer of heat from a high temperature part of an object or several objects in contact with each other to a low temperature part is called conduction. The heat conduction is proportional to the temperature difference. In the steady state, the heat conduction can be expressed by the following formula. In the equation, Q: heat conduction (Kcal)