Danfoss Refrigerant constants Fact sheet
Fact sheet
Refrigerant constants
Antoine equation
ADAP-KOOL® Refrigeration control systems
A2
Te = ————— - A3 (LnPe - A1)
Fact Sheet | Refrigerant constants, Antoine equation
Purpose
This document is for controllers that require a refrigerant setting. This setting is performed with three constants A1 , A2 , A3 and for some controllers a "Glide" value.
In most controllers, these values are put in from factory. Either as a number or as refrigerant name.
If the controller is to regulate with a refrigerant that can not be selected with a number or a name, set the three constants and for some controllers a "Glide" value. The values refer to the table.
Note:
Case controllers will not be able to run the Adaptive defrost function or Flash gas detection, when a user defined refrigerant is selected.
Pack controllers will not be able to run the Dirt detection, when a user defined refrigerant is selected. The Antoine constants are based on data generated by RefProp 10.0 software delivered by NIST.
ASHRAE |
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EKE / AK-CC / AK-PC Constants |
|
AKC / EKC / AK-CC / AK-PC Constants |
Controller |
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Refrigerant number |
A1 |
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A2 |
A3 |
Glide |
A1 |
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A2 |
A3 |
Glide |
setting |
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R12 |
9.421 |
|
-2069.6 |
249.5 |
0.0 |
9421 |
|
-2070 |
2495 |
0 |
1 |
R13 |
9.332 |
|
-1614.9 |
254.5 |
0.0 |
9332 |
|
-1615 |
2545 |
0 |
6 |
R13B1 |
10.170 |
|
-2274.5 |
282.9 |
0.0 |
10170 |
|
-2274 |
2829 |
0 |
7 |
R22 |
9.748 |
|
-2017.2 |
247.8 |
0.0 |
9748 |
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-2017 |
2478 |
0 |
2 |
R23 |
9.904 |
|
-1687.6 |
252.5 |
0.0 |
9904 |
|
-1688 |
2525 |
0 |
8 |
R32 |
10.271 |
|
-2059.6 |
252.1 |
0.0 |
10271 |
|
-2060 |
2521 |
0 |
14 |
R114 |
9.954 |
|
-2655.3 |
263.8 |
0.0 |
9954 |
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-2655 |
2638 |
0 |
11 |
R123 |
9.605 |
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-2527.3 |
235.4 |
0.0 |
9605 |
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-2527 |
2354 |
0 |
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R125 |
9.764 |
|
-1939.4 |
246.8 |
0.0 |
9764 |
|
-1939 |
2468 |
0 |
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R134a |
9.936 |
|
-2147.9 |
242.3 |
0.0 |
9936 |
|
-2148 |
2423 |
0 |
3 |
R142b |
9.600 |
|
-2258.8 |
244.4 |
0.0 |
9600 |
|
-2259 |
2444 |
0 |
12 |
R152a |
9.919 |
|
-2209.3 |
246.8 |
0.0 |
9919 |
|
-2209 |
2468 |
0 |
|
R170 |
9.353 |
|
-1608.3 |
260.5 |
0.0 |
9353 |
|
-1608 |
2605 |
0 |
24 |
R227ea |
9.644 |
|
-2138.8 |
238.2 |
0.0 |
9644 |
|
-2139 |
2382 |
0 |
15 |
R236ea |
10.119 |
|
-2532.6 |
244.3 |
0.0 |
10119 |
|
-2533 |
2443 |
0 |
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R236fa |
9.718 |
|
-2250.5 |
233.2 |
0.0 |
9718 |
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-2251 |
2332 |
0 |
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R245fa |
9.938 |
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-2457.0 |
232.3 |
0.0 |
9938 |
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-2457 |
2323 |
0 |
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R290 |
9.400 |
|
-1990.7 |
253.9 |
0.0 |
9400 |
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-1991 |
2539 |
0 |
25 |
R401A |
9.863 |
|
-2124.3 |
242.5 |
5.1 |
9863 |
|
-2124 |
2425 |
5 |
16 |
R401B |
9.786 |
|
-2076.2 |
241.1 |
4.9 |
9786 |
|
-2076 |
2411 |
5 |
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R402A |
9.706 |
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-1929.3 |
245.8 |
1.3 |
9706 |
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-1929 |
2458 |
1 |
18 |
R402B |
9.745 |
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-1966.7 |
246.7 |
1.6 |
9745 |
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-1967 |
2467 |
2 |
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R403B |
9.925 |
|
-2066.6 |
254.7 |
0.9 |
9925 |
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-2067 |
2547 |
1 |
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R404A |
9.715 |
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-1946.4 |
245.8 |
0.5 |
9715 |
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-1946 |
2458 |
0 |
19 |
R406A |
9.804 |
|
-2150.3 |
243.1 |
8.6 |
9804 |
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-2150 |
2431 |
9 |
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R407A |
10.060 |
|
-2037.4 |
241.1 |
5.3 |
10060 |
|
-2037 |
2411 |
5 |
21 |
R407B |
9.875 |
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-1950.9 |
239.8 |
3.4 |
9875 |
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-1951 |
2398 |
3 |
22 |
R407C |
10.072 |
|
-2059.7 |
241.1 |
5.9 |
10072 |
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-2060 |
2411 |
6 |
20 |
R407D |
10.097 |
|
-2119.0 |
242.4 |
5.7 |
10097 |
|
-2119 |
2424 |
6 |
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R407F |
10.091 |
|
-2035.0 |
241.3 |
5.3 |
10091 |
|
-2035 |
2413 |
5 |
37 |
R407H |
10.085 |
|
-2051.2 |
241.0 |
6.0 |
10085 |
|
-2051 |
2410 |
6 |
49 |
R408A |
9.714 |
|
-1982.3 |
248.2 |
0.3 |
9714 |
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-1982 |
2482 |
0 |
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R409A |
9.864 |
|
-2131.9 |
242.0 |
7.7 |
9864 |
|
-2132 |
2420 |
8 |
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R409B |
9.869 |
|
-2113.6 |
241.9 |
7.0 |
9869 |
|
-2114 |
2419 |
7 |
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R410A |
10.086 |
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-1990.0 |
248.7 |
0.1 |
10086 |
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-1990 |
2487 |
0 |
23 |
R413A |
9.867 |
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-2089.8 |
240.0 |
3.7 |
9867 |
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-2090 |
2400 |
4 |
32 |
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2 | AM187286420404en-000601 |
© Danfoss | Climate Solutions | 2022.02 |
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