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2018-01-26View Original

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user
Reply #22018-01-26
Translate the following texts from chinese_simplified to korean. Return ONLY
Reply #32018-01-26
orean JSON
Reply #42018-01-26
user
Reply #52018-01-26
Translate the following texts from chinese_simplified to korean. Return ONLY
Reply #62018-01-27
korean
Reply #72018-01-27
管网阻力变大时,风机转速是变快还是
Reply #82018-01-27
用户
Reply #92018-01-27
Translate the following texts from chinese_simplified to korean. Return ONLY a valid json array of translated strings in the samesame order. No additional explanations.
Reply #102018-01-28
管网阻力变大时,风机转速是变快还是变慢?!
Reply #112018-01-28
应当是变快吧,增加动能?
Reply #122018-01-28
呵呵,入口多少,出口就多少!
Reply #132018-01-28
别扯了,体积流量变化,质量流量照样变化。 阻力增加,压头增加,但电机功率下降!
Reply #142018-01-28
应该首先确定是离心风机,还是罗茨风机。 离心风机:管网阻力变大时,风量变小,负荷变小,对于异步电机应该是转速变大(变化量很小),对于同步电机,转速不变。 罗茨风机:管网阻力变大时,风量基本不变,负荷变大,对于异步电机应该是转速变小(变化量很小),对于同步电机,转速不变。
Reply #152018-01-28
转速和流量成正比是风机三大定律,错不了的。空气是可以压缩的,前方阻力太大,就往回跑呀,只要进风口的压力低于出风口,那就返回进风口了,
Reply #162018-01-28
你先别扯~~~仔细考虑下,冲动是魔鬼~~~
Reply #172018-01-28
进风口的压力肯定是低于出风口的,不然就没推动力,风就抽不动了。 你说往进风口返,这个说法我不同意。从风管起始口到风机入口,负压是越来越大的,风只会往风机入口那个方向走,动量守恒啊。
Reply #182018-01-28
那罗茨风机更容易被烧掉?
Reply #192018-01-28
出口阻力变大流量减少,功率减低,与离心泵曲线相当

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