Can these two pumps be connected in parallel?
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Can these two pumps be connected in parallel? What are the flow rate and head after parallel connection?
It’s difficult to explain clearly when pumps of different models are connected in parallel.
The purpose of parallel connection is to increase flow rate, but the media being transported are completely different – one is pure water and the other is circulating water; the quality of these waters differs greatly, so they cannot be mixed together...
Their purpose has now been changed; they are connected in parallel to produce hot water at 50°C. Will operating them in parallel cause damage to the pumps? As for the flow rate after parallel connection, it should be the sum; the head should be the proportional average
In parallel operation, it is necessary to consider the pressure in the backflow path; if the pressure in that pipeline is higher than 0.25 Mpa, then your circulating water booster pump will experience pressure buildup, as if the outlet valve were closed
1. Pumps with different parameters can be connected in parallel, provided that the head ranges of their characteristic curves overlap; in other words, there should be some overlap in the head values from the dead point to the maximum flow rate range. 2. Based on the operating point parameters listed by the original poster, these pumps cannot be connected in parallel, as there is a difference in their head values, and the pump with the lower head value will not be able to deliver flow when connected in parallel. However, this does not determine whether the curves of the two pumps overlap to some extent; if there is overlap, the possibility of parallel operation still exists. 3. If the two pumps are located far apart and small-diameter pipes are used, the presence of pipeline resistance adds complexity to the possibility of parallel operation; therefore, the description above is based on the scenario where the two pumps are placed adjacent to each other, with no interference from pipe resistance
They can be connected in parallel, but when the pumps are running, those with a higher head do the work while those with a lower head do not
They can be used in parallel, but the pressure in the pipeline at the actual outlet determines the operating efficiency of the two pumps. When the outlet head is higher than 20m, the efficiency of the circulating water booster pump decreases!