Why do vacuum pumps consume different amounts of water? ? ?
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The vacuum pump system in our unit is scheduled to be upgraded, and I’m quite puzzled by this issue that has arisen now. When measuring the water output of the five vacuum pumps, all five of them drained water into the return water tank at the same time; it was found that the return water tank collected approximately 3.5 m3 of water per hour. According to the manual for the vacuum pumps, each pump (SK-12) consumes 50 L of water per minute; therefore, the water consumption per pump is 3 m3/h. The total water consumption for five pumps should be 15 m3/h. There is a big difference between the water tank’s displacement as measured on-site and the actual value; why is that? ? ? ? ? This post was last edited by lhxo524 on 2008-3-5 17:48]
The water consumption per vacuum pump (SK-12) is 50 L/h; therefore, the water consumption per vacuum pump is 3 m3/h? Is the water consumption per vacuum pump (SK-12) 50 L/min? In that case, the water consumption per vacuum pump would be 3 m3/h. The water consumption is the amount required at standard speed; it varies with different speeds ； At the time of leaving the factory, when calculating the water consumption of the vacuum pump, the outlet pipe is open-ended with no resistance. This post was last edited by xxrewj on 2008-3-5 16:47]
Should I use the displacement of the tank used for field testing for the calculations, or what?» ? ?
Let’s all share our thoughts; it can help broaden our perspectives
Thank you to the person above; I have another question. Under unchanged operating conditions, will the water consumption of a vacuum pump change after several years of use – will it increase or decrease? ? ? I just checked with the workshop; the vacuum pump is actually operating at an optimal level. If too much circulating water is fed into the vacuum pump, it will trip, which is why the valve is only open to half its capacity. Previously, the water supply for the SK12 water ring pump was connected to the main cooling water pipeline; five thin pipes were connected to this main pipeline to serve as the water supply source. The return water from the vacuum pump flowed into the return water tank, from where it was pumped by a pipeline pump into the cooling tower and integrated into the factory’s overall cooling water system. Now, it is planned to change the piping connection, so that the vacuum pump operates in its own closed system and is not connected to the entire water system. So the plan is as follows: The water returned by the vacuum pump goes into the water tank, and from there, the water is pumped through a pipeline to the heat exchanger before being sent back to the vacuum pump to complete the cycle. First, it is necessary to calculate the heat exchange area, which requires knowing the flow rate of the vacuum return water. Second, it is needed to determine the capacity of the pipeline pump as well as the flow rate. Do anyone have any suggestions? ? ? ? This post was last edited by lhxo524 on 2008-3-6 12:41]
Actually, this will work fine: the working capacity can be set at 6 m3/h, but it can be increased to 15 m3/h