How exactly should the load on a pump be understood?
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For pumps, there is usually a concept of “load”; for example, the greater the load when a centrifugal pump starts, the higher the current drawn by the motor. However, the concept of load is a bit too vague; literally speaking, load should refer to flow rate, but there are two types of flow rate as well – volumetric flow rate and mass flow rate. So, which concept does the term \"load\" refer to in the context of pumps? Different concepts imply different approaches to operating centrifugal pumps; let’s discuss this together
For the same medium, a higher volumetric flow rate results in a higher mass flow rate, and thus a greater load on the pump
But what about different media? If air is pumped using a centrifugal pump, is the load on the centrifugal pump high or low in that case?
I really don’t know what the original poster is trying to ask. Don’t quality flow rate and volume flow rate have a conversion relationship? The principle is the same; does it matter which one is used? Eating too many baozi causes stomach discomfort just like eating too many dumplings!
Reply to 4# HOULS71: But when it comes to fluids with different properties, the volumetric flow rate and mass flow rate are different. What I really want to know is which parameter of the pump determines its load – whether it’s the volumetric flow rate or the mass flow rate
The selection of a pump involves more than just these factors. Why is it necessary to know in detail various parameters of the medium before selecting a pump? Parameters such as operating temperature and frequency of use are all relevant to the choice of pump. If it were that simple, anyone could select a pump, and there wouldn’t be so many problems.
The load on a pump refers to the power required for the rotation of its impeller; this includes factors such as the pump’s flow rate and head, as well as volumetric losses and mechanical losses. It doesn’t just refer to traffic.