Yes, both pump will run at the same time.
- Original Message -----
From: constant george
To: <a href="/group/PipingDesign/post?postID=r4LzjLj8EkPrsoFwF9Wj-P1Cgm1oKGgh8UKVdaCP2Cfmwl7b42e_ZJGqGo9E6y06HwwNL_7m6oNCpk5c8wmmk0-9g8ZPmJM">PipingDesign@yahoogroups.com</a>
Sent: Thursday, April 14, 2005 12:01 PM
Subject: Re: [PipingDesign] Parallel Pump Suctions
Do you run both pumps in the same time?
- dornnalex <adornn@kgsgroup.com> wrote:
>
>
> How do you calculate the NPSH available when 2 pump
> are drawing from
> the same suction line. I imagine I add the total
> flow of both pumps to
> calculate the friction losses in the suction line.
> The absolute
> pressure, vapour pressure and the static height
> remain the same.
> NPSH avail = Habs - Hvpa +/- Hst - Hfs
>
> Will this mean that the total "NPSH required" is
> just the sum of the
> NPSH of each pump?
>
Received on Thu Apr 14 14:23:00 2005