design of expansion tank

[scherif]

hi,nice to send my 1 st message,my q is how to design the expansion tank in hydronic system

[Andy]

Hi, Scherif
you could always dispense with the header tank and fit an autoclave (bladder), these are sized according to the system internal volume and operating temperature range.
Failing that I can add a link to the Grasso site where they have a very good description of a hydronics system.
Regards. Andy.

[Jacek]

Hi, Scherif
you could always dispense with the header tank and fit an autoclave (bladder), these are sized according to the system internal volume and operating temperature range.
Failing that I can add a link to the Grasso site where they have a very good description of a hydronics system.
Regards. Andy.

Hi Andy.

Could you give us the link you mentioned above. I'm very interested in chilled water systems.

Thanks in advance!

Regards form Poland.

Jacek

[aansari]

Dear Andy
Your help is very much needed in this area. We are designing a system for a fresh-cut factory to work with glycol. I need to confirm with the supplier the tank size. So I am looking forwared for your input.

[nike123]

Dear Andy
Your help is very much needed in this area. We are designing a system for a fresh-cut factory to work with glycol. I need to confirm with the supplier the tank size. So I am looking forwared for your input.

You could do quick calculation here:
http://www.elbi.it/configurat/body.pe

or you could download software here:
http://www.reflex.de/reflex/pdf/reflex4_de.exe

[yangchenchen]

many engineers don't know the details about a expansion tank. this topic needs more discussion

regards from China
yangchenchen

[iminsincere]

i need some expansion calculation.

1) System total hot water volume = 1,300 cu. meters (Including pipeliens & boilers)
2) Boiler Design Pressure = 200 psig
3) System Pressure = 10 bars (145 psig)
4) Water Inlet to Boiler = 140 deg. C
5) Water Outlet from Boiler = 155 deg. C

how much will be tha expansion

[abet_meneses]

Mate,

The thread is more than a year.

[MrEngr]

Goto engineermanual.com and search for expansion tank, there is a page there that explains it well.