Artisi

1 hour ago, Jonmarleesco said:

For the drivers? Or the BiB? 

Both

20 minutes ago, Skeptic7 said:

Typical Thailand all around. Apathy...Both with those at fault and with those in charge. Sooo Thai...failing to act responsibly, lacking personal responsibility, failure to make and enforce responsible laws and lack of responsible leadership. 

 

But hey, new slogan at least...

 

TYPICALLY THAILAND! 

Maybe the "This Is Thailand" (TIT) would more apt in describing "Typically In Thailand" - but guess same outcome.

1 hour ago, Naam said:

with the water level 15m down there's nothing to calculate if the surface mounted pump is not a jet pump.

really depends on how pedantic you want to be, but you're  correct , a 1" pipe x 10m on the inlet side of the pump wouldn't /shouldn't  cause any problem.

17 minutes ago, essox essox said:

this place is NOT third world it is more like a fifth world country...they can not even find Yingluk.....even when see was seen in tokyo

Oh! "They" can find her, but for what end? 

On 13/04/2018 at 8:54 AM, carlyai said:

Small hijack: Artisi, what are the water flow formulars?

If you have 1" pipe from the bore to the pump inlet, the water level is 15 m down, your pump is 1 Hp and your outlet pipe size is 2"?

How do you calculate gpm or water flow?

 

If you calculate water flow of, say, 20gpm what does this look like? In other words, what should the water flow look like coming out of the 2" hole if the pump?

Should the water flow look like an old person who can't get and erection or a young bull?

 

Happy Songkran.

 

Sent from my SM-J700F using Tapatalk

 

 

 

Sorry for late reply, but it is songkran and there is so much water about it just confuses the issue?

However, to fully answer your question, to decide on the flowrate from the pump you need a performance curve for the pump or a tabulated table showing flowrate against suction lift / discharge pressure, now if you want to become very pedantic you need to calculate the total losses on the inlet side and the losses on the outlet side.

As for 20 gpm from a 2" discharge, I would expect it to exceed what us old guys are capable of  - - but having never flow tested a young bull I can't give you a definite answer on that particular point. 

2 hours ago, zlodnick said:

Artisi,

 

The footvalve is down 10 meters and the water level is down 15 feet ( just over 4 meters).

 

I checked the voltage,   230 v. 

 

I haven't tried turning the tap down to reduce the water flow, as was suggested. I just don't know, but it would seem to me that would make the pump work harder?

Reducing flow by increasing head on a radial flow centrifugal pump reduces power as well as reducing losses on the inlet side of the pump, however you can only increase the head on the pump until the head following the reducing valve doesn't meet your needs, ie., the flow/pressure at the taps or into your holding tank. 

54 minutes ago, colinneil said:

This cannot be correct, before the holiday government lackies were spouting off about 7% reduction this year.

They said that there were measures in place to make songkran safer.

 

Sure, but wishful thinking doesn't reduce road deaths, no matter how hard you think or wish or  predict. 

Simply a lost cause, like trying to herd cats or teach basic addition to 6 month olds. 

26 minutes ago, cooked said:

OK but he is talking about 10 metres. That or he is being imprecise which is why I tried to stay polite.

You are mentioning factors that you can indeed use when passing a University exam but which have little practical application in a muddy hole.Water temperature? Come on.

He was talking about 10 m of pipe with   a water level of 15m. 

6 hours ago, cooked said:

I'm not sure if I understand the OP correctly. You will not be able to 'suck' water from a depth of more than about 8 or 9 metres, no matter how powerful the pump is. Even if you do manage to pump up water, the rate of flow will be minimal. This is why most boreholes have a submersed pump,

The diameter of the pipe only plays a secondary role in as far as water supply is concerned although obviously 1 mm won't give you much joy, and 10cm diameter would be a waste of money. 3/4" or 1" pipe is what most people will go for, the loss of pressure due to internal friction between the water and the pipe walls over a length of 10 metres is not significant.

"Because a perfect vacuum is never achieved and because some lift is lost to friction in the suction line, the maximum actual suction lift for a positive-displacement pump is approximately 22 ft. The maximum actual suction lift for a centrifugal pump is approximately 15 ft when pumping water from an open air tank."

If I misunderstood the OP or I misunderstood my classes in fluid mechanics, just ignore me.

I wouldn't like to be impolite by ignoring you, but 15ft is too low a number for correctly sized pipework but without a pump curve showing NPSH, knowing the elevation of the installation, water temperature, flowrate etc of the installation I think you can for most purposes you consider 23 / 25 as a reasonable suction lift. As the OP is sighting 15ft lift, we can assume this is within the pumps capability. 

The overheating is another unrelated problem, and as already indicated by wirejerker probably low voltage and maybe the cause of the submersible burnout. 

32 minutes ago, cornishcarlos said:

 

Yes, I was thinking too low... Either adjusted for the media or they stopped counting at 5pm !!! 

Fake news ?

32 minutes ago, Orton Rd said:

Young husband of Mrs cousin died yesterday just 21, they had a baby last year, hit by a lorry at night up country. He had no lights on his motor bike (using the light on his phone!) speeding and no helmet,  amazingly the lorry driver admitted fault and will be paying out.When will they ever learn?

How long is a piece of string? 

2 hours ago, Felt 35 said:

 Songran festival in 2118 on 13 April will probably be a National day of  mourning to remember the fallen in the 21st century

organised by who, the government?

 unlikely as they only talk and make stupid statements as they don't really care, so why would they even contemplate a day of mourning.

2 hours ago, bankruatsteve said:

1" should be fine.  

agree , 1" should be ok but going to a larger diameter will not cause any problems - and 15' lift is also ok, and I would stick with the 10m of pipe to allow for lowering the water level during pumping and the  for dry session if it has any effect on the water level.

The only surprise is the lowish number compared to the average. 

First up, you are talking about a surface mounted pump, second what is the distance from the pump inlet to the water level in the well, and what size pump / model are you using? 

Urged - just tell, no fire protection, condemn the building, but TIT - pussy-foot around the problem as usual. 

23 hours ago, attrayant said:

 

Let me get this straight.  You'd prefer to go to the hospital... when the doctors and nurses aren't there?  Who do you expect to receive treatment from, the janitorial staff?

 

 

I think I'll do that.  From our friends at The Straight Dope:

 

When doctors go on strike does the death rate go down?

 

 

Don't worry; he's probably not referring to you.

 

 

 

you did read the full article , then maybe you didn't or can't, if you had read it you might have noticed the following:

"Any seeming benefit to patients’ health likely resulted from about 11,000 fewer operations (presumably elective) being performed that month than was typical, meaning that an estimated 50 to 150 patients who could have been expected to die didn’t" ---- Note:  50 to 150 didn't die from elective surgery - so 50 to 150 lives saved, not a bad effort.  

Plus it might be worthwhile to expand your reading instead of sticking to a site solely dedicated to finding fault with legitimate articles -- The Straight Dope does have its place - but ...

Worth a read if interested.

\https://www.huffingtonpost.co.uk/dr-raj-persaud/when-doctors-go-on-strike_b_1513689.html

1 hour ago, EricTh said:

please enlighten me.

 

http://thechef.info/khmer-wedding-dresses/khmer-wedding-outfits-khmer-wedding-dresses/

 

 

 

Enlighten you: seems you missed the subtlety of the Thai belief that it's the centre of the world.     

8 minutes ago, EricTh said:

I'm not sure about this but from what I read these aren't really Tai costumes but more like Khmer costumes.

 

Click on link below.

 

http://eastasiaorigin.blogspot.com/2017/06/ethnic-origin-of-thai.html

 

Can't be true, Thailand is the hub of all, always was, always will be 

4 minutes ago, evadgib said:

I wonder if this offer will be extended to the English?

Only if your name is Morris. 

On 04/04/2018 at 5:35 PM, connda said:

I'll pay the fee instead of wearing the 'officially sanctioned' Thai dress.

Also, the traditional Thai dress for the 99% is not the 'traditional clothing' of the Hi-Sos that is being peddled by the Thai ministries.  What is being forwarded as 'traditional dress' is an exercise in revisionist history.

 

This was the traditional Thai dress for the 'average' Thai citizen perhaps with the exception of the city dwellers who were not the majority population in the country prior to 1942 when Western dress was mandated and a country-wide dress code was enforced:



 

2nd from the left should be mandated for all females 16 - 40 with dispensation above 40 for those deemed suitable. 

On 04/04/2018 at 6:04 AM, Cadbury said:

So nationalism and cultivating a love of the history of Thailand is so important that free entry for those who go in fancy dress only lasts for a week. Similar to road safety programmes and bus inspections that only last for Songkran and Christmas/New Year.

Thailand the Hub of Short Term Fixes.

Problem is, there is never any fix, it's just a wet dream for those still capable. 

4 minutes ago, connda said:

But the Land Transport Department responded Monday that those who take the joke too far and use them in real life face prosecution.

 

No sense of humor at the top end of the food chain in this country.

Thought they had a good sense of humour, laughing to themselves  for a couple of months while Mr piggy was sorting out his watch story. 

3 minutes ago, chang1 said:

There are probably fewer deaths because operations get postponed. Have you considered how many would die if there were only witch doctors? I bet they would never have any "unnecessary" deaths as those that died would all be blamed on bad spirits.

Yep fewer deaths because operations were postponed, 10/10 - well done. 

46 minutes ago, Arjen said:

Yes, only the "swing type" check valves are always slighty leaking.

 

This type will do better, bust must be mounted vertical, or there should be always some pressureon the outfeed side.

 

Can be mounted in any orientation you want, up, down, sideways or arse over head to suit yourself as they are spring assisted.