Pump Flow vs Pressure || Difference Between Pressure and Flow

Pump Flow vs Pressure || Difference Between Pressure and Flow


In this video i explained the difference between pressure and flow

Pressure:
Definition: Pressure is the force exerted per unit area within the hydraulic system.
Units: Typically measured in pounds per square inch (psi), pascals (Pa), or bar.
Function: Pressure is what moves the hydraulic fluid through the system. It's the driving force that enables hydraulic actuators, like cylinders or motors, to perform work. The pump generates this pressure to overcome resistance in the system and move the fluid.

Flow:
Definition: Flow refers to the volume of hydraulic fluid that moves through the system per unit of time.
Units: Measured in gallons per minute (GPM), liters per minute (L/min), or cubic meters per second (m³/s).
Function: Flow determines the speed at which a hydraulic actuator (like a cylinder) will move. Higher flow rates mean faster movement of actuators, while lower flow rates result in slower movement.

A hydraulic pump primarily generates flow, but it can also create pressure as a result of that flow. Here’s how it works:

Generating Flow:
The primary function of a hydraulic pump is to move hydraulic fluid from one place to another. The pump creates a flow of fluid through the hydraulic system. This flow is essential for powering hydraulic actuators, such as cylinders or motors, which perform the actual work.

Creating Pressure:
While the pump generates flow, it also indirectly creates pressure. As the pump pushes fluid through the system, it encounters resistance from various components like valves, hoses, and actuators. This resistance causes the fluid to build up pressure.
The pressure is essentially a result of the pump’s flow pushing against this resistance. The pump itself does not generate pressure directly; rather, it provides the flow necessary to achieve the desired pressure in the system.

Summary:
Flow is the primary output of the pump.
Pressure is a result of the pump’s flow encountering resistance in the hydraulic system.
So, while a pump’s main function is to generate flow, the pressure in the hydraulic system arises from the pump’s ability to move the fluid against the resistance of the system.

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Name - Jayprakash Prasad
From - Maharashtra ( India )
YouTube Channel ( JP HYDRAULIC CIRCUIT) -    / @jphydrauliccircuit