R410A

[MrReds]

Hallo to everybody !

I don't know if I am posting in the right forum, but I'd try !

Please, I would be grateful if anybody could :
- describe me his experience with R410A, with respect of R22 or R407C, for example, in terms of dimensioning heat exchangers, or dimensioning lines
and

- suggest me some web sites where to learn more about R410A, equipment dimensioning, its actual and future applications ?

Thanks in advance !!

 

[imok2]

MrReds, This is a good web site for information on 410A

 

[atlas06]

Just type in R410A in google and you have more answers that anyone can give you.
OK, CFC free refrigerant which is a blend of three R-125, R-32 and another (I have it but forgot, I'll look it up).
R410 is in a higher pressure than current R-22.
R-22 will be phased out in 2010 (in the US) and will not be manufcatured after 2020, wil disapear after 2030. (in europe it will disapear after 2014)

Expect R-22 to be hard to find right after 2010. if you design DX units today, you ought to go with R410A because if you get a refrigerant leak after 2010, it might just as expesive to buy a new unit.

You cannot use R-410A in R-22 compressors.

I have an article that says when blend refrigerants (R-410A and R-407C) are released into the atmosphere, they break out immediately, meaning that they become R-125, R-32 and the other, so how can this R410A be a green non CFC refrigerant if when released it breaks into HCFC components?

 

[HVAC68]

http://www.honeywell.com/sites/sm/410a/Myths.htm

http://www.eurocooling.com/articlecopeland.htm

HVAC68

 

[TXiceman]

R410 has high discharge pressures when compared to R22 and requires higher DWPs on the high side. R-407 has a rather large temperature glide. So far, the industry does not have a real suitable replacement for R-22.

R-134a works well in larger chillers with screw compressors. Go any lower than A/C levels, I prefer to go to R-507 as it is an azetrope and not a blend like the 40 series refrigerants.

For R-410 you will find few compressors (lots of scrolls) and few controls suitable for the pressures in the larger tonnages.

Ken

Ken
KE5DFR