R410 boils at -61.9 degrees Fahrenheit. R134AA has a boiling point of -14.9 degrees Fahrenheit. R410A distribution is a little better than R134A when the inertia is higher. So at low qualities or churn flow, the liquid R410A reaches the top tubes of the system. Photo credit: instructables.com.

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data fit and calculation of constants for HFC-134a were performed for Chemours at the NIST under the supervision of Dr. Mark O. McLinden. The constants were calculated in SI units. For conversion of thermodynamic properties to Engineering (ENG) units, properties must be calculated in SI units and converted to ENG units.
\n is hfc134a the same as r134a
The COP of HFO-1234yf with changing compressor rpm is 1.3–5% lower than HFC-134a, which is in good agreement with the previous work [10] that reported 0–4% lower COP. The conformity of the simulated model for HFC-134a was also checked by Kayanakli and Horuz [23] (Fig. 14). Download : Download high-res image (46KB) Download : Download full
properties of HFC-134a to those of CFC-12, an intensive support from the refrigerant and air-conditioning industry has given to the refrigerant HFC-134a as a potential replacement for CFC-12. On the other hand, even though there isn t much difference in properties between these two refrigerants, the overall system performance may be affected

R-134a Safety Data Sheet R-134a 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME: R-134a OTHER NAME: 1,1,1,2-Tetrafluoroethane USE: Refrigerant Gas DISTRIBUTOR: National Refrigerants, Inc. 661 Kenyon Avenue Bridgeton, New Jersey 08302 FOR MORE INFORMATION CALL: IN CASE OF EMERGENCY CALL:

. 279 382 259 89 148 83 293 141

is hfc134a the same as r134a