What does connecting pumps in series primarily enhance in a hydraulic system?

Connecting pumps in series is primarily done to enhance the pressure in a hydraulic system. When pumps are arranged in series, the output of the first pump feeds into the second, effectively combining their pressure outputs. This means that each pump adds its pressure output to the system, resulting in a higher overall pressure.

This configuration is particularly useful in applications where a higher pressure is needed to overcome resistance in the system, such as in long pipelines or systems requiring significant force to move fluid. It's important to note that while the series configuration contributes to increased pressure, it does not significantly enhance the flow rate, as the same amount of fluid is still being moved through the system; in fact, the flow rate may decrease due to increased resistance.

Efficiency and temperature changes would be influenced by how the pumps are configured and managed, but the primary goal of using a series configuration is to boost system pressure.