Good link?

[Peter_1]

http://www.cibse.org/pdfs/4a%20A%20Campbell.pdf

http://www.airah.org.au/downloads/2002-06-02.pdf

[Andy P]

Hi,

The system Andy Campbell was describing was a cascade with R-404A on the high temp side and CO2 on the low temp side. Its the R-404A that is condensing at 36'C - well below it's critical temp of 72'C

cheers

Andy P

[besh3333]

Hi,
Thanks for good links, but do you have any idea how man can dimension pipe system for Co2? I tried Cool pack but there is not alternative to choose co2.

[Peter_1]

The good old way: manual, isn't such a big effort with an Excel spreadsheet.

[US Iceman]

The Danfoss program may have CO2 data for that purpose. I don't use this program but from the information I have heard it is a very useful tool.

If that program does not have this capability, then you have to do what Peter said; calculate it by hand or in a spreadsheet.

[750 Valve]

I think danfoss' dircalc program has the ability, I will check tomorrow and confirm

[Josip]

Hi, :)

DirCalc 1-14 has 20 refrigerants, CO2 too;)

Good tool, definitely:)

Best regards, Josip :)

[Bones]

thanks for the information, now just time to si down and take the information in would be good ;)