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Feasibility Of Centrifugal Pump For Different Viscosity And Density Th
#1
Posted 07 February 2018 - 01:34 AM
#2
Posted 07 February 2018 - 02:34 AM
Hi ,
Please consider to prepare a specification sheet with relevant information and submit it to vendor .
You found already plenty of issues and gaps , nature of the fluid, viscosity, abrasiveness of the product, etc .
good luck
Breizh
#3
Posted 07 February 2018 - 05:44 AM
hi bagul
basic information we should furnish to pump vendor at the time of proper selection of the unit .
keep in mind that pump performance or testing fluid is water unless otherwise specified.
regards
VP
#4
Posted 07 February 2018 - 07:23 AM
Hi Kamlesh,
Your problem is multi faceted. I will try to put some light on issues.
1. Every Pump manufacturer designs pump for Water service & establishes performance curve for water service. But if you have specific demand of service fluid , then performance curve can be established for desired service fluid. Check if the pump mentioned is used for same service since beginning. Also check whether actual fluid data was shared with vendor at the design phase and if that data is consistent with your current service fluid composition.
2. If you found that fluid is abrasive , then vendor only can suggest appropriate seal plan.
3. If you find that discharge flow is less than desired one then there could be multiple issues:
a) Pump discharge line is limiting.
b ) Pump motor is limiting which may not be providing sufficient power at such high viscosity to push the fluid to destination.
c) Since your fluid contains solids, there may be deposition of solids at certain pipe segments (viz. elbow, Tee, valve etc) , which is not allowing fluid to pass and creating excess pressure drop.
4. you can evaluate if you can increase RPM of pump which will help to increase capacity as per affinity law, when impellar remains same.
5. If impellar of large diameter can be used, same can be replaced.
I hope this can help to analyse problem further and reach solution.
Edited by Amit J, 07 February 2018 - 07:25 AM.
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