pressure and flow
- Thread starter Softus
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Softus said:You've lost me here Dave - what's your reasoning behind the idea that larger bore pipes lead to less flow (or pressure)?gas4you said:
I agree......the physics dont add up!
I know nothing about physics side of it, although I do nave an old fashioned 'o' level in it
I was just trying to point out to op that with a combi the best results are from a 15mm pipe and generally a larger 22mm pipe, although giving the same end result to some degree, will visually look as though the water is not coming out of the tap so fast.
I was just trying to point out to op that with a combi the best results are from a 15mm pipe and generally a larger 22mm pipe, although giving the same end result to some degree, will visually look as though the water is not coming out of the tap so fast.
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Realistically I agree it doesn't but I often think it just looks as though it does, giving a false impression and as we all know combis produce better hot water from 15mm pipes.
Whatever size pipe you have pressure remains constant but quantity is greater with larger pipes as in gravity hot water systems.
I'm getting confused myself now I know what I mean but am tying myself up in knots trying to write and explain it
Bit like my beer belly. The larger it gets it flops out more but more slowly
Whatever size pipe you have pressure remains constant but quantity is greater with larger pipes as in gravity hot water systems.
I'm getting confused myself now
I know what I mean but am tying myself up in knots trying to write and explain it Bit like my beer belly. The larger it gets it flops out more but more slowly
For a given opening on a given tap, I can't see how larger bore pipework will lead to less flow from that tap.
However, the time elapsing between demand for hot water and the moment it arrives at a tap is reduced by having 15mm pipework - is that what you're thinking of?
However, the time elapsing between demand for hot water and the moment it arrives at a tap is reduced by having 15mm pipework - is that what you're thinking of?
I know exactly what he means, you are mincing words again, you pedantic sod .
Bath taps give the appearance of less flow because of the larger bore pipe.
Try watering the garden with a 22mm garden hose.
.Bath taps give the appearance of less flow because of the larger bore pipe.
Try watering the garden with a 22mm garden hose.
Gasman1015 said:Try watering the garden with a 22mm garden hose.
And you try watering your garden with a 3" firemans hose.................
Oh, do tell. Please explain where I was being pedantic.Gasman1015 said:
Well you give the appearance of not knowing what you're talking about. Do you have a larger bore pipe, by any chance?
Some facts (and these are true regardless of whether it's me who tells you or anyone else):
1. In a gravity fed household, the water at taps upstairs is under significantly less pressure than at taps downstairs.
2. In a household where hot is from a combi, the water at taps upstairs is under significantly less pressure than at taps downstairs.
3. Taps to which the pipework is larger than other taps give greater flow, not less.
Well, I presume that you'd suggest for this experiment that I put a bath tap on the end of the hose, but I won't be doing that since it wouldn't make one iota of a difference to your pointless corollary.
I don't know what you mean by "never" - two of my posts were deleted, and the remaining five posts remain.MOD 2 said:
I take it from this that it was you who deleted them. I can guess why, which is that you're pursuing a vendetta. If I'm wrong, then I suppose you were wrong to say that I "know" why, in which case please enlighten me.
In that case it's reasonable to ask you to explain why there were deleted.MOD 2 said:
You may well laugh, but if you choose to delete my posts, and not ones posted by kevplumb, or other members, where the posts are equally mundane or equally relevant/irrelevant, and if you choose to do it persistently, and silently, and without any explanation, even when asked, then what would you call that series of actions, if not a vendetta?2 vendetta
I'm not the one arguing - I asked a reasonable question in a polite and reasonable way. If you find the question uncomfortable then that's a matter for you.
It really annoys me that certain mods alter posts and delete others for what appears to be no justifiable reason other than that they don't agree with an opinion.
Its a shame that when somebody insignificant gets a little bit of power (well they believe it to be power anyway) they just can't handle it. Its a good job they aren't in a position of real responsibility or we would all be doomed.
Its a shame that when somebody insignificant gets a little bit of power (well they believe it to be power anyway) they just can't handle it. Its a good job they aren't in a position of real responsibility or we would all be doomed.
#BoxBasher said:It really annoys me that certain mods alter posts and delete others for what appears to be no justifiable reason other than that they don't agree with an opinion.
Its a shame that when somebody insignificant gets a little bit of power (well they believe it to be power anyway) they just can't handle it. Its a good job they aren't in a position of real responsibility or we would all be doomed.
so why not volenteer your services Box
And I would love to see soft with the power
(evil genius laughter HA HA HA HA)
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