Process calculation problems
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Generally, in the process design phase, for pumps that operate in a one-main-one-redundant configuration, when calculating the flow rate, should the capacity of both pumps be taken into account, or only that of one pump?
Personally, I think the flow rate should be calculated based on one pump; under normal circumstances, one pump is in use while another is on standby.
For pumps with one in operation and one as backup, calculate based on the capacity of one unit
Of course, it’s counted as one unit. As you know, it’s designed to operate with one unit in use and one as a backup; so the traffic is only calculated for one unit.
It is designed specifically according to the user’s requirements! ! !
This post was last edited by xuh7705 on 2010-6-23 at 15:41. No matter how many pumps there are, calculate based on the flow rate of those pumps. In normal process design, one pump is in operation while another serves as a backup, in order to ensure continuity of production (to prevent sudden failures). So the flow rate is calculated based on one pump.
The flow rate of the backup pump does not need to be calculated; it should be based on the maximum volume of the medium during normal operation.
Based on the pump’s performance curve and the different media involved, I usually select the pipe diameter after performing calculations, to ensure a flow velocity of 0.5~3.0 M/S
As long as it is one in operation and one in standby, it represents the flow rate of one pump. The purpose of a backup pump is to come online in order to ensure normal operation when the main pump fails.
It is calculated per unit, but sometimes the owner may have special requests
It’s a very simple question; don’t overcomplicate it. During normal production, only one piece of equipment is in use, so the process calculations must certainly be based on the flow rate of that single device. As for the backup equipment, it is used only as a substitute when the main working equipment fails or requires scheduled maintenance, in order to reduce unnecessary economic losses resulting from downtime.