例1为什么房间内的暖气片都安装在窗户下方?分析用暖气片采暖的原理是利用空气对流.由于窗户阻挡冷空气的能力明显小于墙体,因此冷空气通常是从窗户进入房间内的.而冷空气的密度大于热空气,会自然向下流动.把暖气片安装在窗户下面,暖气散发出来的热气在第一时间接触冷空气,这样,一方面可以隔断 Example 1 Why the radiators in the room are installed under the windows? The principle of heating for analysis radiators is to use air convection. Because the ability of windows to block cold air is significantly lower than that of walls, cold air usually enters the room from the windows. The density of cold air is greater than that of hot air, and it will naturally flow downwards. The radiator is installed under the window. The heat emitted from the heater contacts the cold air at the first time, so that it can be cut off on the one hand.