德国政府资助的“正能源房”示范项目近来颇引人关注。感兴趣的家庭可以申请到楼中试住一年,目前已有两个四口之家先后住进了这座2011年建成的花园别墅。没人居住期间,房屋则对外开放,供市民参观。所谓正能源房,是指每年一次能源需求和终端能源需求均为负值的建筑,但其使用的技术却并不固定。德国政府鼓励研究人员尝试不同技术来建造 The German government-funded demonstration project “Positive Energy Housing” has drawn considerable attention recently. Interested families can apply to the building to try for one year, there are already two four-family have entered this built in 2011 Villa. During the absence of people, the houses are open to the public. The so-called positive energy house, refers to the annual energy demand and terminal energy demand are negative for the building, but its use of technology is not fixed. The German government encourages researchers to try different technologies to build