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# head loss - fluid dynamics Watch

1. hi everyone, just wondering if someone can explain to me about head loss, I understand it losses due to friction (major head losses) and due to fittings (for minor head losses) but i dont understand why the units are measured in meters. I know mathematically it comes out as meters but to visualise what 2.5m major head loss is, i cant grasp it..can anyone help?
2. It is essentially the maximum height that the pump could deliver the fluid to. The friction from the pipes as well as things like valves, any instrumentation, etc. will reduce this total head due to energy losses.

Head loss can also be measured in terms of pressure, too.
3. hmm.. im still striuggling tbh, although i really appreciate the answer, sorry if im coming across ignorant but Im trying to visualise it as loss, seeing as it is energy loss per unit weight. I read somewhere that it is equivalent to a static column of the fluid which is similar to what you have described, although its a loss.

As the flow rate increases the head loss increases, which makes sense with what you described but how is that a loss
4. Well imagine you have a pump facing vertically upwards. The pump will have enough power to make the fluid reach a certain height. That's the head. Now the head loss is the amount of "height" that is lost due to frictional losses, fittings etc. in the system. So if you needed to deliver water from the ground to a height of, say, 2m, the pump would need a head of more than 2m as there will be head losses in the system.

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Updated: April 8, 2013
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