近年来 ,德国越来越多地利用高科技生产节能建材、设计和推广节能房屋。根据热水瓶原理制造的真空绝热板便是最新的例子。热水瓶原理是 :绝热层中的气体分子越少 ,扩散掉的热能就越少 ,真空甚至能完全隔绝热的扩散。利用该原理不仅能大大降低墙壁厚度 ,而且还能取得很好的保暖 In recent years, Germany has increasingly used high-tech energy-efficient building materials to design and promote energy-efficient housing. The vacuum insulation panel made according to the thermos principle is the latest example. Thermos principle is: the less the gas molecules in the insulation layer, the less the heat energy is diffused, the vacuum can even completely isolate the thermal diffusion. Using this principle can not only greatly reduce the wall thickness, but also get a good warmth