how to estimate the amount of ***** leaking

[nand]

Hello,

My coleagues found a ***** leak in the liquid pipe cemented under a store. There is no access to the pipe. (we will eventually need to run another one to supply the evaporators)

They used nitrogen pressure (24 bar) and it dropped to 20 bar in one hour.

Is there any way to calculate aproximately the amount of ***** r404a lost over a day/month/year through such a leak? (last year we charged 400kg, this year we charged ~500 kg so far)

The liquid pipe is aprox. 70 meters long in total by 54 cm in diameter.

[cadwaladr]

replace the pipe,cannot believe this question?who put it under concrete in the first place,did he wear a hat with bells on it.

[monkey spanners]

Hi Nand,

That sounds a pretty big leak, if its a liquid line it'll be even quicker to leak as it will come out as a liquid.

Needs a new pipe run in as soon as possible, even if its just a temporary one till a neater proprer job can be made of it.

In the UK we would not be allowed to recharge a system with a leak, not sure of the legal situation in Romania.

[sedgy]

why try to calculate a leak , replace the pipe pressure test , tripple evacuate gas up system , run on test, re- leak test, run on test , job finished,

[al]

i had this with a supermarket that shifted on its foundations, only affected the liquid lines tho. we replaced with stainless flexible hoses until the copper could be rerun.

al

[nand]

Thanks, everybody

[nike123]

Is there any way to calculate aproximately the amount of ***** r404a lost over a day/month/year through such a leak? (last year we charged 400kg, this year we charged ~500 kg so far)

With very complex mathematical functions I calculated your leak as:
1,1 -1,36 kg/day
33-40 kg/month
400-500 kg/year

[Bones74]

I agree, Just change the piping. Change your oil and filters, New refrigerant and start over.

[nand]

With very complex mathematical functions I calculated your leak as:
1,1 -1,36 kg/day
33-40 kg/month
400-500 kg/year

Braniac, i guess....
400 kg/(last year =~ 12 months), 500 kg/(this year =~10 days at the time) that's an arithmetic i can't grasp.

I was asking about calculating with refrigerant diagrams. You can't compute something and verify by computing it again, when you verify you must compute in another way and get to the same result.

We found the leak, the liquid line was pressed on a water pipe.