科普知识-自制易风能模型.doc

自制简易风能模型 风能(wind energy)是因空气流做功而提供给人类的一种可利用的能量。空气流具有的动能称风能。但是风能是感受不到的，是不是非常好奇呢？下面就让我们来制作一个模型 这个小制作 需要的材料： 2个塑料瓶塑料瓶 第二步：做转子 把一根铁丝拧正丁字形，如下图所示。然后，剪出不同形状的扇叶用胶带贴在吸管上，最后把吸管套在铁丝上，转子就做好了。 第三步：做支架 将另外一个塑料瓶塑料瓶 第四步：安装转子和曲别针 把转子的轴从瓶盖穿进去，用钳子在轴的末端把曲别针的一端连接在上面，在曲别针上栓一个线，线的末端再栓一个小铁环。最后组装好的模型 第五步：测试 在自然风下或风扇下，随着转子的旋转，小铁环将被拉起，风能转换成了势能。 那么我们如何测试不同形状的扇叶的效能呢？方法很简单，我们只需换上不同的扇叶，在相同的风力下，记下小铁环被拉到顶部所需要的时间就可以了。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager