Results 1 to 6 of 6
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20-04-2011, 05:29 PM #1
RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
Hi,
I'd like to know your opinions about replacement of R-22 system working (-10 ºC to 36ºC) to R-404-a or Rs 45.
MY opinion is clear:
1.-) We know for several years how R-404-a is working, (not the same for Rs 45).
2.-) Big companies sell R-404-a for several years (not the same for Rs 45)
3.-) Big manufacturers (Bitzer, Heatcraft, Danfoss... give performance data for their products with R-404-a (not the same for Rs-45).
4.-) Everybody knows that glide for R-404-a is 0,9, Glide for Rs-45 its said that is 2,8 much bigger than 0,8 recognised by manufacturer...
5.-) R-404-a price is better than Rs 45
6.-) BUT, HERE COMES THE PROBLEM:
You need much extra operations in order to achieve a correct phase out of R22 to R-404-a, than Rs-45.
So, the offer is finally much expensive with R-404 a than with rs 45.
So, What to do if my customer is only looking for the cheaper option?
Thank you for giving me your opinions
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20-04-2011, 08:57 PM #2
Re: RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
What type of equipment are you looking to change?
Brian - Newton Abbot, Devon, UK
Retired March 2015
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21-04-2011, 07:48 AM #3
Re: RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
It's a fruit storage center, 4 Bitzer open units 6F.2 of 151 M3/H, with 10 rooms (10 Heatcraft NKT 4x6DB4L EVAPORATORS) and evaporative condenser. water defrost. and 10 danfoss TXV MODEL 55
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23-05-2011, 02:52 PM #4
Re: RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
Why don't you use R422D from DuPont? To use R404A or RS45 you need to ensure pressure rating of system can cope with higher pressures of these refrigerants.
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24-05-2011, 12:00 PM #5
Re: RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
Hi,
if you recycle that R22, then the operation is not that expensive, as you have until end of 2014 to make a good use of it.
regards,
Nando.
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30-06-2011, 01:40 AM #6
Re: RS 45 (R-434-A) vs r-404-A? For R-22 phaseout?
Hi ,
I don't like replacement to R 422 D because of glide 4,5 K i s an important glide (i think), and i don't want to think i f this means a problem in the installation. I prefer to face a problem concerning pressure then glide...
Hi Fri3Oil System, i agree with you about recycling, but in the two cases it's a "must" isn't it?