Saturday, June 29, 2019
Physical Properties of Refrigerants R-417A Environmental Classification HFC! By Imran
Physical Properties of Refrigerants R-417A
Environmental Classification HFC
Molecular Weight 106.8
Bubble Point (1 atm, ºC) -39.1
Critical Pressure (bar-abs) 40.4
Critical Temperature (ºC) 87.1
Critical Density (Kg/m^3) 520.6
Liquid Density (25 ºC, Kg/m^3) 1151.3
Vapor Density (bp,Kg/m^3) 5.681
Heat of Vaporization (bp, KJ/Kg) 200.75
Ozone Depletion Potential (CFC 11 = 1.0) 0
Global Warming Potential (CO2 = 1.0) 1950
ASHRAE Standard 34 Safety Rating A1
Temperature Glide (ºC) 5.5
Composition: A blend of HFC refrigerants R-125, R-134A and
hydrocarbon R-600 (butane) (46.6 / 50 / 3.4 wt%)
Application: An alternative to R-22 in medium temperature refrigeration
and air conditioning.
Performance: Both suction and discharge pressures will run lower than
R-22, which may affect valve operation or orifice tube selection. Loss of
capacity may be significant at lower evaporator temperatures, but
generally not a problem in properly sized equipment at warmer
application temperatures.
Lubricant: The hydrocarbon component in R-417A helps promote oil
return in systems containing mineral oil or alkylbenzene. Although HFC
refrigerants won’t mix with these oils, the hydrocarbon addition thins the
oil and keeps it moving around the loop. More complicated piping
arrangements or large hold-up volumes may still require some oil be
changed to POE.
R-417A
R-417A
Available in the following sizes:
26R417ART 12 Kg RETURNABLE CYLINDER
44R417ART 20 Kg RETURNABLE CYLINDER
100R417ART 46 Kg RETURNABLE CYLINDER
1587R417ART 720 Kg RETURNABLE DRUM
A mechanical engineer specializes in HVAC (heating, ventilation, and air conditioning) designs, develops, and maintains systems that control the temperature, humidity, and overall air quality in buildings. This includes selecting, sizing, and specifying HVAC equipment and controls, analyzing energy consumption and efficiency, and troubleshooting and resolving HVAC-related issues. They may also be involved in commissioning new HVAC systems, performing routine maintenance, and providing guidance to other members of a building's design or construction team.
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