Transcription of Technical R-422B and R-422D Guidelines - …
1 Technical R-422B and R- 422d Guidelines Available in the Physical Properties of Refrigerants R-422B R- 422d . Environmental Classification HFC HFC. following sizes Molecular Weight R- 422d . Boiling Point (1 atm, F) 25 LB. CYLINDER. Critical Pressure (psia) 110 LB. CYLINDER. Critical Temperature ( F) Critical Density, ( ^ 3) Liquid Density (70 F, ^ 3) Vapor Density (bp, ^ 3) Heat of Vaporization (bp, BTU/lb.) Specific Heat Liquid (70 F, BTU/lb. F) Specific Heat Vapor (1 atm, 70 F, BTU/lb. F) Ozone Depletion Potential (CFC 11 = ) 0 0. Global Warming Potential (CO2 = ) 2525 2730. ASHRAE Standard 34 Safety Rating A1 A1. Temperature Glide ( F) (see section 2) 5 5.
2 Pressure-Temp Chart R-422B R- 422d . Liquid Vapor Temp R-422B R- 422d (psig) (psig) ( F). Liquid (psig). Vapor (psig). (R-125 /134a /600a) (R-125 /134a /600a) -40 . (55 / 42 / 3 wt%) ( / / wt%) -35 -30 -25 Replaces: R-22 -20 -15 Applications: -10 -5 R-422B : Medium temperature commercial and 0 industrial direct expansion refrigeration 5 10 and A/C 15 R- 422d : Medium and low temperature commercial 20 and industrial direct expansion refrigeration 25 30 35 Performance: Slightly lower discharge temperature 40 45 Possible undersized TXV based on 50 pressure drop 94 55 102 103 60 111 100. Up to 10% lower capacity 113 100 65 122 110.
3 123 110 70 133 121. 134 120 75 144 132. Lubricant 145 132 80 156 144. Recommendation: Compatible with mineral and alkylbenzene 158 143 85 169 156. 170 156 90 183 170. oil and if oil return becomes a concern, 184 169 95 197 184. addition of polyolester lubricant in 5% 198 183 100 212 198. 213 198 105 228 214. increments could help resolve the issue 229 213 110 245 231. 246 230 115 262 248. 263 247 120 281 266. Retrofitting to: R-422B for R-22 Air Conditioning page 95 281 265 125 300 286. R-422B for R-22 Refrigeration page 95 301 284 130 320 306. R- 422d for R-22 Refrigeration page 95 321 304 135 341 327. 342 326 140 364 350.
4 Refrigerant Reference Guide 52 5th Edition 2010. Technical Guidelines THERMODYNAMIC PROPERTIES OF R-422B . Temp Pressure Pressure Density Density Enthalpy Enthalpy Entropy Entropy Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor [ F] [psia] [psia] [lb/ft 3] [lb/ft 3] [Btu/lb] [Btu/lb] [Btu/R-lb] [Btu/R-lb]. -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 109 60 118 106 65 127 115 70 138 125 75 149 135 80 160 146 85 172 158 90 185 170 95 199 184 100 213 198 105 228 212 110 244 228 115 260 244 120 278 262 125 296 280 130 315 299 135 335 319 140 357 340 Refrigerant Reference Guide 53 5th Edition 2010.
