Hi,
I have a doubt related to PV pannels structures, to be installed near the sea. I want to know witch material is more resistant to corrosive environment: aluminium or galvanized steel?
Is there any quick reference or a technical document, where i can find this and more about coatings in...
Dear Artsi,
No, this is not related to that post. This is why i've created a new one.
I know that this solution applied for the other case was a stupid solution, because the problem could stay the same or become even worst and cause problems...
Thanks anyway!
Dear whoowho,
The pump is not...
hi,
I have an installation where the pumps avaiable in the market for that purpouse do not reach the head that i need to overcome the circuit pressure loss. Therefore, i wonder if i could install another pump after this 1st one.
Do you think that i need to leave some space between them or even...
Thank you all for the replies!
I'm more concerned about the air. Tha guy how made the installation used a filling pump witch has the possibility to remove the air durin the system filling. So, for this reason, he did not install an air purger at the top of the circuit. I wonder if some air...
I everyone.
It can not be rats or gloves, etc, because is a 15mm pipe.
The pump is installed correctly. I've attached a scheme.
I'm quite lost. The 1st think that i thought is to change the pump, but i'm affraid that may not be this the reason...
BigInch,
It's quite complicate to draw now a schem, but i understand what is your point. You want to confirm if my calculations were correct.
Let's assume yes and if we don't find a reasonable reason, then we assume that was my failure.
Thanks
MikeHalloran,
In the top of the circuit. But now it is closed, because the circuit was filled and removed all the air.
BigInch
Ok. That was my cnclusion. But what is the possible reason?
Thank you both!
Hi,
I'm facing the following problem: in the project, i've calculated the pressure drop along a closed circuit. The calculations gave me aprox. 3,5 mH2O of pressure drop. This was calculated for a optimal flow of 240 lt/h. After the installation was made, the max flow that the pump was able to...
Thanks BigInch,
Now i understood perfectly what you said!
One last thing: isn't this elevation loss consideration included in the total height elevation between the lower and upper point of the pipe, used to calculate also the pump head needed?
Thanks once more
Thanks for the replies.
I'm a bit confused about the answers. Normally i use the formula that i use with any local loss, wich includes that Cv factor that BingInch mentioned.
My doubt, and that was yet clarified, is related to this factor. Does it change if we consider vertical or horizontal...
