Propane - Thermal Diffusivity vs. Temperature and Pressure

Figures and tables showing thermal diffusivity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.

Thermal diffusivity is the rate of transfer of heat of a material from the hot side to the cold side - a measure of how quickly a material can absorb heat from its surroundings. It can be calculated by taking the thermal conductivity divided by density and specific heat capacity at constant pressure.

Thermal diffusivity has the SI derived unit of (m²/s) , and is usually denoted α but a, κ, K, and D are also used. The formula is:

α =k / (ρ C_P) (1)

where

k = is thermal conductivity (W/(m·K))

ρ = density (kg/m³)

C_P = specific heat capacity (J/(kg·K))

Below, thermal diffusivity of propane at varying temperatures and 1, 10, 50 and 100 bara (14.5, 145, 725 and 1450 psia) are given in figures and tables.

See also other properties of propane at varying temperature and pressure: Density and specific weight, Dynamic and Kinematic Viscosity, Prandtl number, Specific heat (heat capacity), Thermal conductivity, and Thermophysical properties at standard conditions,
as well as thermal diffusivity of air, nitrogen and water .

Thermal diffusivity of propane at 1, 10 and 100 bara (14.5, 145 and 1450 psia), and varying temperature given as °C or °F:

Propane thermal diffusivity Pressure C

Thermal diffusivity of propane at atmospheric pressure and given temperature, SI and Imperial units:

Propane - Thermal Diffusivity vs. Temperature at Atmospheric Pressure
State	Temperature		Thermal diffusivity		Temperature		Thermal diffusivity
State	(K)	(°C)	(×10^-6 m²/s)	(m²/h)	(K)	(°F)	(×10^-5ft²/s)	( ft²/h)
Liquid	123	-150	0.142	0.000510	116	-250	0.154	0.00555
	148	-125	0.134	0.000482	144	-200	0.146	0.00524
	173	-100	0.124	0.000448	172	-150	0.134	0.00484
	198	-75	0.114	0.000410	200	-100	0.122	0.00438
	223	-50	0.103	0.000369	228	-50	0.108	0.00390
	231	-42	0.09896	0.000356	231	-44	0.107	0.00384

Gas	231	-42	3.68	0.0132	231	-44	3.88	0.140
	248	-25	4.33	0.0156	244	-20	4.88	0.176
	263	-10	4.94	0.0178	255	0	5.76	0.207
	268	-5	5.14	0.0185	266	20	6.69	0.241
	273	0	5.35	0.0193	272	30	7.18	0.259
	278	5	5.56	0.0200	278	40	7.68	0.276
	283	10	5.78	0.0208	283	50	8.19	0.295
	293	20	6.22	0.0224	294	70	9.26	0.333
	298	25	6.44	0.0232	300	80	9.82	0.353
	303	30	6.67	0.0240	305	90	10.4	0.374
	323	50	7.61	0.0274	311	100	11.0	0.395
	348	75	8.86	0.0319	339	150	14.1	0.509
	373	100	10.2	0.0367	366	200	17.8	0.639
	398	125	11.6	0.0418	394	250	21.8	0.786
	423	150	13.1	0.0473	422	300	26.4	0.951
	448	175	14.8	0.0532	478	400	37.3	1.34
	473	200	16.5	0.0594	533	500	50.7	1.83
	523	250	20.3	0.0730	589	600	67.0	2.41
	573	300	24.5	0.0884	644	700	86.4	3.11
	623	350	29.3	0.106	700	800	109	3.94
	673	400	34.7	0.125	755	900	136	4.90
	773	500	47.1	0.170	811	1000	167	6.02

Thermal diffusivity of propane at given temperature and pressure, SI and Imperial units:

Propane - Thermal Diffusivity vs. Temperature and Pressure
State	Temperature			Pressure		Thermal diffusivity
State	(K)	(°C)	(°F)	(bara)	(psia)	(×10^-6 m²/s)	(×10^-5ft²/s)
Liquid at equilibrium	100	-173	-280	2.5E-07	3.7E-06	0.149	0.160
	130	-143	-226	0.000176	0.00255	0.140	0.151
	160	-113	-172	0.00850	0.1233	0.130	0.140
	190	-83.2	-118	0.1055	1.530	0.117	0.126
	220	-53.2	-63.7	0.6058	8.787	0.104	0.112
	250	-23.2	-9.7	2.180	31.62	0.0902	0.0971
	280	6.9	44.3	5.817	84.37	0.0772	0.0831
	310	36.9	98.3	12.73	184.6	0.0650	0.0699
	320	46.9	116	15.99	231.9	0.0609	0.0656
	340	66.9	152	24.32	352.7	0.0512	0.0551
	355	81.9	179	32.43	470.4	0.0394	0.0425
	360	86.9	188	35.55	515.6	0.0345	0.0371
Gas at equilibrium	100	-173	-280	2.5E-07	3.7E-06	1921257	2068022
	130	-143	-226	0.000176	0.00255	5460	5877
	160	-113	-172	0.00850	0.1233	187	201
	190	-83.2	-118	0.1055	1.530	22.2	23.9
	220	-53.2	-63.7	0.6058	8.787	5.13	5.52
	250	-23.2	-9.7	2.180	31.62	1.73	1.86
	280	6.9	44.3	5.817	84.37	0.729	0.785
	310	36.9	98.3	12.73	184.6	0.341	0.367
	320	46.9	116	15.99	231.9	0.264	0.284
	340	66.9	152	24.32	352.7	0.151	0.163
	355	81.9	179	32.43	470.4	0.0800	0.0861
	360	86.9	188	35.55	515.6	0.0552	0.0594

Liquid	85.53	-187.62	-305.72	1	14.5	0.148	0.159
	100	-173	-280	1	14.5	0.147	0.158
	120	-153	-244	1	14.5	0.142	0.153
	140	-133	-208	1	14.5	0.137	0.147
	160	-113	-172	1	14.5	0.130	0.139
	180	-93.2	-136	1	14.5	0.122	0.131
	200	-73.2	-99.7	1	14.5	0.113	0.122
	220	-53.2	-63.7	1	14.5	0.104	0.112
	230.74	-42.41	-44.34	1	14.5	0.0992	0.107
Gas	230.74	-42.41	-44.34	1	14.5	3.36	3.62
	240	-33.2	-27.7	1	14.5	3.70	3.98
	260	-13.2	8.3	1	14.5	4.46	4.80
	280	6.9	44.3	1	14.5	5.26	5.66
	300	26.9	80.3	1	14.5	6.09	6.56
	320	46.9	116	1	14.5	6.96	7.50
	340	66.9	152	1	14.5	7.88	8.48
	360	86.9	188	1	14.5	8.84	9.51
	400	127	260	1	14.5	10.9	11.7
	500	227	440	1	14.5	17.1	18.4
	600	327	620	1	14.5	25.1	27.0
	700	427	800	1	14.5	35.1	37.7
	800	527	980	1	14.5	47.3	50.9
	900	627	1160	1	14.5	62.1	66.8
	1000	727	1340	1	14.5	79.6	85.7

Liquid	85.62	-187.53	-305.55	10	145	0.148	0.159
	100	-173	-280	10	145	0.147	0.158
	120	-153	-244	10	145	0.143	0.154
	140	-133	-208	10	145	0.137	0.147
	160	-113	-172	10	145	0.130	0.140
	180	-93.2	-136	10	145	0.122	0.131
	200	-73.2	-99.7	10	145	0.113	0.122
	220	-53.2	-63.7	10	145	0.105	0.112
	240	-33.2	-27.7	10	145	0.0955	0.103
	260	-13.2	8.3	10	145	0.0866	0.0933
	280	6.9	44.3	10	145	0.0779	0.0839
	300.09	26.94	80.49	10	145	0.0692	0.0745
Gas	300.09	26.94	80.49	10	145	0.435	0.468
	320	46.9	116	10	145	0.553	0.595
	340	66.9	152	10	145	0.668	0.719
	360	86.9	188	10	145	0.782	0.842
	400	127	260	10	145	1.02	1.10
	500	227	440	10	145	1.69	1.81
	600	327	620	10	145	2.51	2.70
	700	427	800	10	145	3.54	3.81
	800	527	980	10	145	4.78	5.15
	900	627	1160	10	145	6.28	6.76
	1000	727	1340	10	145	8.05	8.67

Liquid	100	-173	-280	50	725	0.150	0.161
	200	-73.2	-99.7	50	725	0.115	0.124
	300	26.9	80.3	50	725	0.0734	0.0790
Supercritical phase	400	127	260	50	725	0.102	0.110
Supercritical phase	500	227	440	50	725	0.300	0.322

Liquid	86.45	-187	-304	100	1450	0.149	0.160
	100	-173	-280	100	1450	0.148	0.159
	120	-153	-244	100	1450	0.144	0.155
	140	-133	-208	100	1450	0.139	0.150
	160	-113	-172	100	1450	0.133	0.143
	180	-93.2	-136	100	1450	0.125	0.135
	200	-73.2	-99.7	100	1450	0.117	0.126
	220	-53.2	-63.7	100	1450	0.109	0.117
	240	-33.2	-27.7	100	1450	0.101	0.108
	260	-13.2	8.3	100	1450	0.0925	0.0996
	280	6.9	44.3	100	1450	0.0849	0.0913
	300	26.9	80.3	100	1450	0.0779	0.0838
	320	46.9	116	100	1450	0.0716	0.0771
	340	66.9	152	100	1450	0.0660	0.0711
	360	86.9	188	100	1450	0.0611	0.0658
Supercritical phase	400	127	260	100	1450	0.0538	0.0579
	500	227	440	100	1450	0.128	0.137
	600	327	620	100	1450	0.235	0.253
	700	427	800	100	1450	0.357	0.384
	800	527	980	100	1450	0.501	0.539
	900	627	1160	100	1450	0.669	0.720
	1000	727	1340	100	1450	0.865	0.931

Unit conversion thermal diffusivity:

square feet/second (ft²/s), square feet/hour (ft²/h), square meter/hour (m²/h), square meter/second (m²/s)

1 ft²/h = 2.7778×10^-4 ft²/s = 0.09290 m²/h = 2.581×10^-5m²/s
1 ft²/s = 3600 ft²/h = 334.45 m²/h = 0.09290 m²/s
1 m²/h = 2.7778×10^-4 m²/s = 10.7639 ft²/h = 0.002990 ft²/s
1 m²/s = 3600 m²/h = 38750.1 ft²/h = 10.7639 ft²/s