PDA

View Full Version : p-h &t-s chart







alamda
12-10-2014, 08:19 AM
please i need your help i want to find the p-h& t-s chart for R502 and what is this type of ***** the SUVA HP62?

Magoo
13-10-2014, 12:20 AM
Hi.
google your requests , plus DuPont refrigerants.

alamda
13-10-2014, 09:31 AM
Hi
thanks very much

xxargs
13-10-2014, 11:32 AM
Why R502??

Saturation value table for R502, p-h and t-s chart can you make itself if you using 'coolpack' software package, under refrigeration utilities (program is free, and coming from Danfoss)

but...

R502, R22, R12 and other blend with CFC-refrigerant is forbidden in many year in EU-country, now forbids also R404A, 407C, 410A, R134a, R143a, R125 etc. in EU depend of high GWP-value.

I hope you only want information about R502 only for comparison - not for new design.

all above refrigerant is now dead refrigerant - have no future

If you design new equipment, choice of allowed refrigerant in EU is now:

blend of R290/R600a, pure R1270, R290, RR600a, DME (R-E170), blend of R1270/R170 (for simulate R410A pressure range), R32 (flammable, give very high head temperature in one stage compression, not direct replacement for R410A...), HFO1234yf (for replace R134a and now questioned in car using), R152 (for replace R134a, also flammable), ammonia and few more.

all refrigerant above 750 GWP going to be forbidden in EU.

Depend of GWP is lower than 750 mostly of usable refrigerant is more or less flammable and some of them make strong and life treating poison in fumes in case of burning (R152a, HFO1234yf, R32 - and why HFO1234yf is questioned in car using)

New designed equipment need designed to handle flammable refrigerant on safe way