Converting Bars to Liters per Minute

Huh!? Bar is a pressure as you said; liter per minute is a flow rate. They ain't the same--they measure different things. Like lynlynch said NO.

Unless maybe you want the flow rate thru an orifice caused by a given pressure. But you didn't say that.

The indicates that you may be onto something else.

To afford you a scientific answer you must give more information.

How many seats in the bar?

What is the temperature? (the flow rate may be proportional to temperature )

During which game?

What liquid?

I real life we would have to know length and diam of piping, size of emitter (orifice , nozzle) etc . Then there will be formulas.

Enlighten us on your requirements and we may respond.

Doesn't convert. Pressure is force per unit area. Liters per minute is volume per unit time.

Is there any further information you may have which would assist us?

You may need to consult Mr Bernoulli, Mr Reynolds, or the pump manufacturer's characteristic chart, depending upon what your pressure source is, and what sort of network it's travelling down. The nicest polynomial flow relationship will always be subject to a pump's fixed delivery curve.

That doesn't seem to make sense - how does one convert pressure to volume flow rate? Go back to your fundamentals, P: [M][L]^-1[t]^-2 vs Q: [M]³[t]^-1 - the two don't match up.

Check your problem/application again - have you got all the information you need?

Is this oil flow in barrels per day?

Or, beer guzzled during a foot ball game in one bar?

Yes, you use the same formula that you use to convert eggs to oranges.

Hi Guest,

I assume you refer to perhaps the pressure and flow through a shower? Or the 'head' of water needed to get a particular pressure?

1 Bar = 14.7 psi which is a force or pressure measurement. While,

1 Litre = Is a linear or flow/volumetric measure over time.

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This site just below lists a series of Conversion Tables on the left, then the measurement you are converting it to in the centre, then the conversion factor on the right. As an example here is just a small portion:Remember, work only from left to right

.http://www.ttgroup2u.com/conversion.php

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• PRESSURE

Bristan Shower Pumps from Bathrooms365... metres (100') 3 bar head pressure producing up to 60 litres per minute flow. ... To convert to a NEGATIVE shower pump, the Negative Head Kit needs to be ...

www.bathrooms365.com/acatalog/Bristan_Pumps.html - Cached - Similar -

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• 
  
• Online Unit Conversion - Valviasliters per hour, 3600000 l/h. liters per minute, 60000 l/min ... Pressure, 1 Pa pascal, standard atmosphere, 9.8692059e-6 atm. bar, 0.0000102 bar ...
  www.valvias.com/miscellanea-unit-conversion.php - Cached - Similar -
• 
  
• Flow units converter | Convert to units measures. - 16:16barrel Oil per hour ( bar/hr ); barrel Oil per minute ( bar/min ) .... 1 liter per hour = 16.67 milliliter per minute or also L/h equals to 0.56357 us ounce per ... __ convert 15 liters per minute to US gallons per minute flow volume rate; ... Length - distance · Metric system units · Power · Pressure - stress ...
  convert-to.com/flow-units-converter.htm
• 
  

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You will have to work out what the flow through whatever size pipe you have.

(Come on I am not doing all the work!) And below is my home made flow chart.

I have started low, with a flow that is little more than a trickle through an 12" (13mm) pipe

I have figured out an approximate chart for, US Gal/min, Imp Gal/min, Litres/min.

US Gal/min-----Imp Gal/min-----Litres/min ------- Flow Rates Per Minute

----1.875------------1.375--------------6.25

----3.75-------------2.75---------------12.5

----7.5-----------------5.5--------------25

--13-------------------11----------------50

--26.5-----------------22--------------100

--39.5-----------------33--------------150

--52-------------------44--------------200

--65-------------------55--------------250

--78-------------------66--------------300

--91-------------------77--------------350

104--------------------88-------------400

117-------------------99-------------450

-130------------------110-------------500

-----------------------------------------

I hope you find this useful

Hi Guest,

I have no idea who you are but, throwing a suggestion like that into this thread is completely useless!

Hi Guest,

I and others have written in and given suggestions and facts. Where are yours?

As a first suggestion, to make yourself even more famous than you already are, why not join CR4 and as a Member reap the benefit of your notoriety.

Or could you not take the criticism that Membership would bring?

Go on, explain to a simple ignoramus like me how bars (14.7 psi) are linked and can be cross referenced with LPM (Liter per Minute) without knowing the pipe size first, in any meaningful way. I can't wait to hear what you have to say.

Though a newer metric system now predominates.

You have the world at your fingertips to either insult, like you did me, or to make an amazing discovery.......................

Take care. Oh, Every insult meant where not indicated!

This forum needs more people like you, babybear, who are willing to assist, and to do so in a positive way.

Good job.

Hello standarded,

I appreciate your candour my friend.

It is not a case of me knowing it all. Rather an idiot throwing names around for no good reason.

If they want to do that, and act the arse, they can go to some other socially interactive site, not here.

I like to think if it was not me, then another Member would have slapped the wrist of this very silly person?

Take care and many thanks for your kind remarks.

Dear Friend,

What made you to get provocated to express "ask anybody from china --- it's about 1.4-1.7 litr pr min for 1 bar" and this is to be explained only by you.? and I am sure, nobody can understand why it is so.

I am of the opinion, your Statement will DEFINETLY OFFEND MANY. Perhaps, when you ask some doubt (may be relevent or NOT relevent)if somebody gives such an answer - WHETHER YOU WILL ACCEPT or TOLERATE.? HAVE SELF-INTROSPECTION.

THE HIGH STANDARDS of CR4 IS TO BE MAINTAINED.

DHAYANANDHAN.S

Hi Dhayanandan ji.

Yes your right, you understand my question. Its correct answer.

thank you.

The guy asked a straight forward question. Perhaps his knowledge of hydraulic mechanics is not that good or maybe like me he had to leave school to get a job and support his family. Maybe he is not confident in working with certain formulae. That doesn't make him STUPID.

Why not make people feel welcome - or is this forum just for know-alls with no respect for 'lesser mortals'

I for one will NOT be using this forum again - you're just an unfriendly bunch that like to score points off eachother.

Hi Guest,

As you are a guest, I have no idea to whom I am speaking!

But it is not that I, and I am talking of myself not others, go around as you say "with our heads up our arses"! If I did that I would not be much use on this site as I would not be able to see anything such as research???????????

Besides which, you do not seem to have accepted the point I and others here are trying to get over that "bars" and Litres cannot be used together.

As someone said, it is like asking how to change oranges to lemons! Ridiculous.

It is ipposiible to mix these two references, "Bars to LPM".

caudalímetro

Yes there is. It's called a characteristic curve. Both pumps and piping systems have them. So do weirs.

Just passing by and after reading a few of your posts, I smell the know-it-all attitude and arrogance that Guest is trying to highlight to you. Wake up!

Hi "Guest",

who has not even the 'balls' to supply a name alongside the insult!

You have just proved how stupid you are to everyone on CR4 apart from the OP (Original Post)!

"Bars and Litres"......... mmmmmm, A seconds thought on your part would have drawn the conclusion, A) there is no way at all these two measurements or criteria are connected. B) You, in your stupidity, chose to shout at the experts whom were trying to point the OP in the right directly, on the very post where there is no connection at all, in any way shape or form!

You know, it is not easier to shout in the dark. It does mean no one can get back to you and discuss this with you and put right YOUR arrogant ways and mend your thoughts.

Joining, 'costs' nothing apart from the fact every-time you answer and confirm a post or reply, you as a member, or we as long standing members with experience must know what we are talking about, simply to be able to discuss any subject in a sensible and cognitive way.

Hello All,

I have read everyone's comments but sadly I'm no engineer and haven't managed to work out the question I'm after. Let me explain: I have just had a new pressurised boiler fitted and the system is limited to 3 bar. I have just installed a new bathroom and put in a wall mounted wide waterfall spout. Problem is that I'm having a back-flow issue due to capillary action. Supposedly the spout works at anything from 1 bar pressure and up. I have measured the flow from the pipe after removing the spout and it's delivering 11 litres per minute. It's a standard British 15mm pipe

Can anyone help me work out what pressure the water is coming out of the pipe at in bar (if this is how you say it)?

I'm at a a loss as to what to do. Is there a blockage somewhere? Is that why the water trickles out and under when the tap is fully opened?

Really appreciate your comments/advise.

Matt

Hi MattR,

Firstly if this is your first post as a member congrats.

If the OP (Original Post) was yours why come back so late and make a comment?

What I am getting at is, if this post I am replying to is you asking your first question why link it in any way with the nonsense request which started this thread?

I think you and the OP may be the same person, and you have now attempted to rephrase your question.

That being said and as yet to be confirmed, are you trying to find out about the back-flow or want to know the flow through your 15 mm pipe?

There is usually a cold water feed to a Bathroom of at least 18 mm or ¾". This allows for the bath to fill quicker, and sometimes this is brought down to 15 mm or 13 mm to give more pressure. It allows for a good pressure to the shower head also. BTW, I always classed 13 mm as half inch, and the only two sized pipes I used was ½" / 13 mm, and ¾" / 18 mm.

Never used 15 in my life, unless that is the external size? If internal dimension this would be 5/8"

When you say you have 'measured' the flow, is that the total flow with the taps and the shower on? And is it 'under pressure' and how much, or just gravity which is about 1 bar?

The flow to the shower only.

The flow to the cold water only?

But if I was you and you were the Original poster, I would cancel this and start another thread because this is looked upon as an idiots question. It is slightly more understandable the latest way you asked it, but do you want to find out how many bars you need to supply water to you bathroom?

And BTW how high is the bathroom?

Or what to do about a suspected back-flow, and where is the back-flow from and to?

Good luck, but as I say this is a joke thread, no insult intended if you were the OP but start again and give at least the details I have mentioned. This will allow others to answer your request for help.

bb

Hello BB,

No I'm not the OP. I'm just somebody who has recently had a new bolier put in and bathroom. The problem is that the manufacturer has taken back the original spout, tested it and said it's working fine. They have stated their product will work fine with anything above 1 bar. Since I'm now supposed to have a pressurised system limited to 3 bar there should be no problem. Annoyingly there is and I'm stuck between the manufacturer and my builder.

My builder has measured the flow rate our of the spout once the tap's been removed and come up with the 11 litres per minute figure. So what I'm trying to figure out is how to convert this to bar and thereby calculate if there's a hidden blockage in the pipes somewhere. Or is 11litres is enough and I'm being fobbed off by the manufacturer.

Happy to post this up and explain the back-story as a first request if you think I'm more likely to get the advise I seek.

Matt

Hi MattR,

I ask you in all seriousness to start a new thread with this same question.

Although it may appear you found the ideal thread to enter, you could not be more wrong! This thread is a basket case and no one is taking any notice of it. Start a completely new thread with your own request please. You will then get a fair chance of getting a decent hearing and the answer you need to solve your problem.

One thing, please do not mention the conversion of bars into distance or anything else. The OP on this thread might have needed help, but wanted to convert two complete different measures and they just did not work. Please start your own thread, and use part of this question as the first post. But mention your problem and nothing about Bars, OK? Start again and others will be more likely to help. I am the first help you have had, usually there are at least tens of replies trying to ring the details out of you.

Start your own thread now and in a day or two max I would bet you would have lots of replies.

bb

In other places I've been, this is known as "thread hijacking." It doesn't work well.

Hi Lehman57

Yes although to be honest this thread was not worth much, I agree and that is partly the reason I asked him to start a new thread.

Take care

bb

Thanks for the advice all. Will start a fresh question today. Hadn't realised everyone was so strict on etiquette!

Matt

I think I know what he want's to know.I sit with a similar question.

The gauge on the left show the pressure in your cylinder the other one show your flow rate.

How do you get 1 Bar of pressure out on the flow meter or do you need to get a different gauge on the flow side to calibrate the flow.

By using this meter I can safe about €80 on my meter.

Thanks