R290 pressure–temperature chart

R290 is a pure fluid. Its normal boiling point is -42.1 °C; the critical pressure is 42.5 bar. At the AHRI 540 air-conditioning rating point — 7.2 °C evaporating, 54.4 °C condensing — the saturation pressures are 5.88 and 18.83 bar, a pressure ratio of 3.20.

Saturation table, -75 to 95 °C

°C	kPa abs	bar abs	psig	h_fg kJ/kg	ρ liquid kg/m³	ρ vapour kg/m³
-75	18.0	0.180	-12.1	457.8	617	0.49
-70	24.4	0.244	-11.2	453.2	612	0.65
-65	32.5	0.325	-10.0	448.4	607	0.84
-60	42.7	0.427	-8.5	443.6	601	1.08
-55	55.2	0.552	-6.7	438.7	596	1.38
-50	70.6	0.706	-4.5	433.7	590	1.73
-45	89.1	0.891	-1.8	428.6	584	2.14
-40	111.1	1.111	1.4	423.4	578	2.63
-35	137.2	1.372	5.2	418.0	573	3.20
-30	167.8	1.678	9.6	412.4	567	3.87
-25	203.4	2.034	14.8	406.7	561	4.63
-20	244.5	2.445	20.8	400.8	554	5.50
-15	291.6	2.916	27.6	394.6	548	6.50
-10	345.3	3.453	35.4	388.3	542	7.63
-5	406.0	4.060	44.2	381.7	535	8.91
0	474.5	4.745	54.1	374.9	529	10.35
5	551.1	5.511	65.2	367.7	522	11.97
10	636.6	6.366	77.6	360.3	515	13.78
15	731.5	7.315	91.4	352.5	508	15.81
20	836.5	8.365	106.6	344.3	500	18.08
25	952.1	9.521	123.4	335.7	492	20.62
30	1079.0	10.790	141.8	326.7	484	23.45
35	1217.9	12.179	161.9	317.2	476	26.62
40	1369.4	13.694	183.9	307.1	467	30.16
45	1534.3	15.343	207.8	296.3	458	34.15
50	1713.3	17.133	233.8	284.9	449	38.63
55	1907.2	19.072	261.9	272.5	439	43.71
60	2116.8	21.168	292.3	259.2	428	49.49
65	2343.0	23.430	325.1	244.7	416	56.15
70	2586.8	25.868	360.5	228.6	404	63.92
75	2849.3	28.493	398.6	210.6	389	73.14
80	3131.9	31.319	439.5	189.8	373	84.41
85	3436.1	34.361	483.7	164.9	354	98.82
90	3764.1	37.641	531.2	132.8	329	119.00
95	4119.5	41.195	582.8	79.5	287	156.31

Pressures are absolute in kPa and bar, gauge in psig (at 101.325 kPa atmospheric); h_fg is the latent heat of vaporisation at the dew pressure; densities are saturated liquid and saturated vapour. Computed with CoolProp 8.0.1dev, the open-source property library the solver runs on, sampled every 0.5 K and printed every 5 K — the same tables the builder reads when it solves a circuit on R290.

R290 compressors in the catalog

541 compressor maps run on R290, each a page with its AHRI 540 / EN 12900 map across the published envelope, and each selectable in the builder. Read any of them at your own evaporating and condensing temperatures →

Copeland — 145 maps: ZB (24), ASE (21), ASM (16), ZH (14), YF (12), AFE (10), YFH (10), RFT (9), YB (8), YS (8), RST (7), AFF (4)
Tecumseh — 111 maps: TCW (26), AJ (22), FH (15), AE (14), ALX (11), AG (10), AEX (4), HG (3), TC (3), TCX (2)
Embraco — 285 maps: EM (37), EMX (37), EMC (32), NEU (22), FMFT (20), NEK (20), NT (20), EMT (13), NEX (12), EMI (10), FFU (8), NTX (8)

The largest at the air-conditioning point

Copeland YB97K1G-TFD (R290 scroll, 60 Hz, MT) — 42.7 kW at 7.2 / 54.4 °C
Copeland YB81K1G-TFD (R290 scroll, 60 Hz, MT) — 35.7 kW at 7.2 / 54.4 °C
Copeland YB97K1G-TFD (R290 scroll, 50 Hz, MT) — 35.6 kW at 7.2 / 54.4 °C
Copeland ZB97K5U-TFM (R290 scroll, 50 Hz, MT) — 35.3 kW at 7.2 / 54.4 °C
Copeland ZB81K5U-TFM (R290 scroll, 50 Hz, MT) — 29.9 kW at 7.2 / 54.4 °C
Copeland YB81K1G-TFD (R290 scroll, 50 Hz, MT) — 29.7 kW at 7.2 / 54.4 °C
Copeland YB64K1G-TFD (R290 scroll, 60 Hz, MT) — 28.6 kW at 7.2 / 54.4 °C
Copeland ZB64K5U-TFM (R290 scroll, 50 Hz, MT) — 24.4 kW at 7.2 / 54.4 °C
Copeland YB56K1G-TFD (R290 scroll, 60 Hz, MT) — 24.3 kW at 7.2 / 54.4 °C
Copeland YB64K1G-TFD (R290 scroll, 50 Hz, MT) — 23.8 kW at 7.2 / 54.4 °C

Open the builder — draw a circuit on R290, and the solver finds its evaporating and condensing temperatures from the coils and the compressor's map.