Unit13 Princioles of Heat Transfer The laws governing the transfer of heat and the 控制 types of apparatus that have for their main object 主要目的 the control of heat flow are therefore of great importance
The laws governing the transfer of heat and the 控制 types of apparatus that have for their main object 主要目的 the control of heat flow are therefore of great importance. Unit13 Principles of Heat Transfer
1.Nature of Heat Flow When two objects at different temperatures are brought into thermal contact,heat flows from the 发生 object at the higher temperature to that at the lower temperature. The net flow is always in the direction of the temperature decrease.The mechanisms by which the heat may flow are three:conduction,convection,and 传导 对流 radiation. 辐射
When two objects at different temperatures are brought into thermal contact, heat flows from the 发生 object at the higher temperature to that at the lower temperature. The net flow is always in the direction of the temperature decrease. The mechanisms by which the heat may flow are three: conduction, convection, and 传导 对流 radiation. 辐射 1. Nature of Heat Flow