head loss

head loss

[′hed ‚lȯs]
(fluid mechanics)
The drop in the sum of pressure head, velocity head, and potential head between two points along the path of a flowing fluid, due to causes such as fluid friction.

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 ?
That means he made a pounds 154 a head loss ( and that does not take into account income the anticipated BSP and SP that was included in the price of his calves which could have been as high as pounds 125-pounds 130 but will disappear from January 1.
A drawback with the use of MHY is that if the MOG/G ratio changes dramatically in the field, then the processor losses change and affect harvested yield, however, that is a secondary issue, since this work has shown that processor losses can be lower than the other field losses, such as corn head loss and more particularly grain damage effects.
With this alternate friction head loss from this new tap would be very small and the flow capacity for the flow through the tunnel to the Eklutna power plant turbines would essentially be preserved.
Maximum Head Loss Through The Meter/strainer Assembly Shall Not Exceed Those Listed By
I was at a complete head loss at the end of last year," Foran told Mirror Sport.
This is mainly attributed to the Sewage Works Access Bridge that causes a 'bottleneck'', backing floodwater up behind the structure and creating a significant head loss through the structure".
Along with low head loss, high accuracy and a fully sealed IP68 construction, the Q4000 represents the latest technology in battery-powered electromagnetic meters.
The largest of the five chapters in this slim manual describes the most common flow meters currently used in the water industry, and summarizes their accuracy, repeatability, flow rates, size range, relative head loss, operation theory, installation, and maintenance.
Measured values are useful for interlab comparisons, apparent values for head loss calculations and surcharge grouping.
The Variable Head Loss Static Mixer consists of two in-line static mixers in series: one with a fixed plat and the other pivoting to achieve a mixing range from 1/2 to 10 FPS with a head loss of 3 psi from 1/2 to 8 FPS.
The Tideflex inline check valve features all of the benefits of the standard Tideflex check valve, including absolute backflow prevention, abrasion resistance and low head loss, and is said to feature a long list of flexible installation options, according to the company's literature.