Pressure loss
Also known as pressure loss or pressure drop, it is a technical and economic indicator that indicates the amount of energy consumed by the device.
Pressure loss is expressed as the total pressure difference of the fluid at the inlet and outlet of the device. It actually reflects the mechanical energy consumed by the fluid passing through the dust removal device (or other device), which is proportional to the power consumed by the fan.
Pressure loss includes along-the-way pressure loss and local pressure loss.
Along-the-way pressure loss refers to the pressure loss caused by the viscosity of the liquid when the liquid flows in a straight pipe.
Local pressure loss refers to the pressure loss caused by the liquid flowing through local resistances such as valve ports, elbows, and changes in flow sections.
The main reason for local pressure loss is that when the liquid flows through a local device, a dead water area or vortex area is formed. The liquid does not participate in the main flow in this area, but swirls continuously, accelerating the friction of the liquid or causing particle collisions, resulting in local energy loss; and when the liquid flows through a local device, the size and direction of the flow velocity change sharply, and the velocity distribution law on each cross section also changes continuously, causing additional friction and consuming energy.
The formula for pressure loss can be expressed as: ΔP = ρ * L * f * (V^2 / D) / 2, where ΔP represents pressure loss (Pa); ρ represents the density of the fluid (kg/m³); L represents the length of the pipeline (m); f represents the pipeline resistance coefficient (unitless); V represents the velocity of the fluid (m/s); and D represents the diameter of the pipeline (m).
