MackFri® - 502
MackFri® - 502
ASHRAE Name : R502
(51.2% R-115 / 48.8% HCFC-22)
Packing: 13.6 Kg. (30 lb.) Net nonrefillable Steel cylinders and individual neutral carton outside.
6.8 Kg. (15 lb.) Net nonrefillable Steel cylinders and individual neutral carton outside.
32 Oz. (1000 ml.), 16 Oz. (500 ml.) and 12 Oz. (340 ml.) cans.
 MackFri®-502 refrigerant. Azeotrope blend of R22 and R115 refrigerants. R22 mass proportion constitutes 48,8%, and R115 - 51,2%. The following ecological characteristics: ODP = 0,33; GWP = 4300. Non-explosive, low-toxic and chemically inert to metals. R502 resolvability in oils, heat transfer coefficient during boiling and condensation are close to the corresponding values for R22. Peculiar feature: R502 is poorly soluble in water. Tolerance concentration of R502 in the air constitutes 3000 mg/m3. Its volumetric refrigerating effect is higher and discharge temperature is approximately 20 oC lower that those of R22, which positively manifests itself on the temperature of electric motor winding during operation of hermetic refrigeration compressor. R502 refrigerant was used in low-temperature compression refrigerating facilities.
Physical properties:
| Physical State |
|
| Molecular mass, gm/mole |
111,6 |
| Freezing temperature, oС |
-160 |
| Boiling point at atmosphere pressure, oС |
-45,4 |
| Temperature glide at atmospheric pressure, К |
0 |
| Saturated liquid density at 25 oС, kg/dm3 |
1,217 |
| Saturated vapor density at boiling point, kg/m3 |
6,22 |
Vapor pressure, МPа:
at 25 oС
at 50 oС |
1,16
2,10 |
| Critical temperature, oС |
82,1 |
| Critical pressure, МPа |
4,07 |
| Critical density, kg/dm3 |
0,566 |
| Specific heat of vaporization at boiling point, kJoule/kg |
172,5 |
Heat conduction at 25 oС, Wt/(m*К):
liquid
vapor at 0,1013 МPа |
0,065
0,012 |
| Surface tension at 25 oС, mN*м-1 |
5,9 |
| Resolvability (at 0,1013 МPа) of water in the refrigerant at 25 oС, mas. % |
0,058 |
Specific thermal capacity at 25 oС, kJoule /(kg*К):
liquid
vapor |
1,25
0,70 |
| Thermal capacities proportion at constant pressure and constant capacity at 25 oС |
1,129 |
| Vapors inflammability in the air |
No |
| Flash point |
No |
| Ozone depletion potential ODP |
0,34 |
| Global warming potential GWP |
4,01 |
|
|
