题目内容
已知某风力发电机组的风轮直径为40 m,其风能利用系数Cp是0.45,求在风速为10 m/s时,该风力发电机组的风轮输出功率是(339.12)kW。______
查看答案
搜索结果不匹配？点我反馈
更多问题
已知某地测风在Z=20 m高度处的风速v1为23 m/s,地表粗糙度指数取0.1,则在Zn=10 m高度的风速为______ m/s。______
The critical Reynolds number of a rough-walled pipe is about _______.
An energy interaction is heat transfer if its driving force is a _______ difference.
The rate of heat conduction through a plane layer is inversely proportional to _______ .
微信支付 
支付宝支付