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Npsh Dependence On Temperature
#1
Posted 26 October 2018 - 09:19 AM
#2
Posted 26 October 2018 - 10:36 AM
Aznadif,
The temperature of the Liquid impacts the NPSH req of a pump. As the pumping liquid temperature increases, the size of the vapor bubbles due to cavitation get smaller, hence leading to lesser damage.
For instance, at a water temperature of 100 degrees C, the NPSH req value will be reduced by almost 0.3 m, at the same other conditions.
Then this effect actually provides a small increment in the actual NPSH margin. Thus, don't worry about the NPSH req at higher operating temperature and just calculate the NPSH av at the new temperature without correction in NPSH req.
#3
Posted 26 October 2018 - 06:54 PM
Hi ,
To support your query , together will Naser ,
Breizh
https://blog.craneen...is-it-important
Edited by breizh, 26 October 2018 - 09:09 PM.
#4
Posted 29 October 2018 - 07:46 AM
Thanks to Naser and Breizh
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