荷兰科学家证实:一只风筝发的电够10户家庭用
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荷兰科学家证实,一只10平方米大小的风筝,可以满足10户家庭的用电需求。科学家希望,可以制造出大型风筝发电系统。
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据美国“物理学家组织网”报道,荷兰代尔夫特科技大学工程学教授乌波·欧克斯说,风筝可以通过系在地面发电机上的绳索来发电。风筝借助风力在空中飞翔,不断飞上、飞下的动作足以产生庞大的能量。风筝发电的成本低廉,只有风力涡轮发电费用的一半。
欧克斯深入研究了悠悠球的运动规则,当一只风筝飞向天际时,另一只风筝就像滑翔机一般从天而降,不需要多少动力就能使风筝连续向地面供电。
高度是风筝发电的优势。一般发电风车的高度约80米,该高度的平均风速是每秒5米,而800米处的平均风速为每秒7米。建造一座高达800米的风车,可能性相当低,风筝却可轻而易举地达到这个高度,充分利用该高度的风力。科学家表示,英国、荷兰、爱尔兰及丹麦是风筝发电的首选之地。
许多科学家都在研究如何通过风筝来驾驭源源不绝的风力能源。意大利巨杉公司设计的风筝发电机,将旋转的12组风筝放到2000米的高空收集风力,牵引一个直径100米的转盘发电,估计每年可产生10亿瓦电力,相当于一个标准燃煤发电厂产出的电力。
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