The pump flow rate has decreased
Thread Content
When conducting experiments on principles of chemical engineering, why does the flow rate of the pump decrease to half of its original value?
Check whether it is the pump speed that has changed or the pipeline characteristic curve that has changed. Or it may be because the pump is not operating at its operating point.
There are many possibilities for the pump flow rate to decrease. It would be best if the original poster could provide more detailed information about their situation
You changed the operating parameters of something – you need to tell us what it is
First, identify the issue with the flow meter, then check for blockages; if that doesn’t resolve the problem, verify whether there are any changes in the pressures upstream and downstream
Combine the 3rd floor and the 5th floor and check again.
If you provide more details about the situation, everyone will be able to help you look into it
To summarize everyone's views: 1. Is the pipeline at the pump outlet unobstructed? 2. Is the pump inlet filter clogged? 3. Is the flow meter reading accurate? 4. Is the pump rotating in the correct direction? 5. Is the pump speed the rated speed? 6. Is there a valve for shutoff? 7. Finally, check again whether the impeller is damaged? :)
Nothing has changed; it’s just that during the second experiment, the gauge reading reached only half of the original value. We use plain water, so it shouldn’t get clogged.
What kind of pump are you using? Was all the medium inside the pump drained after the previous shutdown? Because some centrifugal pumps have a rather strange problem: they work fine when turned on initially, but after being shut down and turned on again, both the flow rate and pressure fail to reach the specified values. This is mainly caused by air in the pump chamber, although normal operation is restored after several successive starts and stops. In fact, this is caused by problems in the internal structure of the pump.
:lol :call: A centrifugal pump is used
The centrifugal pump probably has air in its pump chamber; feel the pump casing – if it’s hot, release the air.