A typical solar airheatingsystem USES a dark colored, perforated aluminum sheeting on a south-facing wall.
一个典型的太阳能空气加热系统例子,是在朝南的墙上利用一个黑色,多孔铝薄膜。
3
The comparison between warm-airheatingsystem and hot water heatingsystem is made. The applicability and practicability of the warm-airheatingsystem are analyzed.