pressure drop


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pressure drop

[′presh·ər ‚dräp]
(fluid mechanics)
The difference in pressure between two points in a flow system, usually caused by frictional resistance to a fluid flowing through a conduit, filter media, or other flow-conducting system.

pressure drop

The decrease in fluid pressure between two ends of a duct or pipeline, between two points in a system, across valves and fittings, etc., due to frictional losses; in a water-piping system a drop in fluid pressure also occurs between two points as a result of the difference in elevation between the two points.
References in periodicals archive ?
In the first year, a new Scheuch EMC baghouse would be installed, tackling the immediate need to reduce the elevated pressure drop. The long-bag filter technology would be used to provide the maximum filtration area in a smaller footprint; making installation in the existing plant easier.
They found that the pressure drop across the filter correlated strongly with oil properties (especially viscosity) and increased linearly with increasing soot content in the oil.
Whereas, due to increased pressure drop, the required pumping power was increased.
In addition, the structure of the packings should not create a tortuous flow path for the vapour in order to maintain a low pressure drop.
The Brinkman--Forchheimer [6] found that when the width of the heat source and the space between the porous layers were of same magnitudes as the channel height, the heat transfer enhancement in the partially filled channel was almost the same as that in the fully filled porous channel while the pressure drop was much lower.
Constriction of the lumen results in airway resistance and pressure drop in ETT during MV.
This can be done with chemical sensors, (4) but a more common method uses pressure drop across the filter (see, for example, Reference 5).
The system will appear as if there is a lack of air pressure but the real problem is pressure drop, which will cause excessive energy consumption.
However, PM filtration causes a high pressure drop, so periodic regeneration is needed.
The DPF is a significant contributor on the pressure drop due to the soot and ash accumulation.
Increasing the size of a pipe from two to three inches can reduce pressure drop up to 50%.
Although a DPF potentially has impressive filtration efficiencies, generally in excess of 95% and up to about 99% in mass, it requires low operating pressure drop to avoid the deterioration of the engine output power and fuel efficiency.

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