The challenge confronting any solar heating system-whether passive, active, or hybrid-is heat storage.
太阳能供暖系统——无论是消极、积极还是混合模式——面临的一项挑战就是热量的储存。
2
The first one is a passivesolar power system.
第一个是被动的太阳能发电系统。
3
Passivesolar and passive ventilation design principles combine with a high-performance building envelope (composed of SIPS: structurally insulated panel system).