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["pum. 泵功率与计算式关于\n", "p>\u00关于根据水泵设备铭牌上面H=6m,Q=11m3/h为什么功率是4KW?若是按照计算式N=ρgQH算的话应该是7.6KW的啊?求指教\n", "p>\u2. 流量使用秒流量m3/s\n", "p>\u4. 你这样算下来是需要做功啊还得转成功率啊\n", "p>\u5. � 啊,谢谢了,但是按照m3/s计算,应该是 15.8*11*6*365=99965w 泵功率选择4kw是为什么啊?\n", "p>\u6. 下 下我除除以365了 但是数值还是还是很大\n", "p>\u7. 本帖最后由 泡沫_ZPTK 于 228-8- " 11:3 编辑 因为你没有除以泵的效率 除以泵的效率后算出来的是轴功率 �然后配用电机还要有 1.25的安全系数 �这样算出来的是配用用电机功率\n"

2018-08-20View Original

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根据水泵的设备铭牌上面H=60m,Q=12m3/h,为什么功率是4KW?若是按着计算式N=ρgQH算的话应该是=7.2KW的啊?求指教
Reply #22018-08-20
流量使用秒流量m3/s
Reply #32018-08-20
你这算下来是需要做的功啊 !还得转成功率啊
Reply #42018-08-20
哦,谢谢了,但是按着m3/s计算,应该是,1000**9.8*12*60/3600=1960w,泵功率选择4kw是为什么啊?
Reply #52018-08-20
下面我除以3600了,可是数值还是相差很大啊
Reply #62018-08-20
本帖最后由 泡沫_ZPTK 于 2018-8-20 11:13 编辑 因为你没有除以泵的效率,除以泵的效率后算出来的是轴功率,然后配用电机还要有1.25的安全系数,这样算出来的是配用电机功率

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