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# Ethylene - Thermal Conductivity vs. Temperature and Pressure

Thermal conductivity is a material property that describes ability to conduct heat. Thermal conductivity can be defined as

"the quantity of heat transmitted through a unit thickness of a material - in a direction normal to a surface of unit area - due to a unit temperature gradient under steady state conditions"

The SI unit used for thermal conductivity is [W/m K], while a common Imperial unit is [Btu/h ft °F].

Thermal conductivity unit converter

The thermal conductivity of ethylene depends on temperature and pressure as shown in the figures and table below.

Ethylene phase diagram

### Online Ethylene Thermal Conductivity Calculator

The calculator below can be used to estimate the thermal conductivity of ethylene at given temperature and atmospheric pressure.

The output thermal conductivity is given as mW/(m K), Btu(IT)/(h ft °F), (Btu(IT) in)/(h ft2°F) and kcal(IT)/(h m K).

Choose the actual unit of temperature:

.

See also other properties of ethylene at varying temperature and pressure : Density and Specific Weight , Dynamic and kinematic viscosity and Specific heat (heat capacity) ,  and Thermophysical properties at standard conditions ,
as well as thermal conductivity o f air , ammonia , butane , carbon dioxide , ethane , hydrogen , methane , nitrogen , propane and water . For thermal conductivity of construction materials, see related documents at the bottom of the page.

Thermal conductivity of ethylene as function of temperature, given as °C and °F, at atmospheric pressure:

.

Thermal conductivity of ethylene as function of temperature, given as °C and °F, and pressure:

.

Thermal conductivity of ethylene at gas-liquid equilibrium pressure and varying temperature, given as °C and °F:

.

Thermal conductivity of ethylene at given temperatures and pressure, SI and Imperial units:

For full table with Thermal Conductivity - rotate the screen!

Ethylene - Thermal Conductivity vs. Temperature and Pressure
State Temperature Pressure Thermal conductivity
[K] [°C] [°F] [bara] [psia] [mW/m K] [kcal(IT)/(h m K)] [Btu(IT)/(h ft °F)] [(Btu(IT) in)/(h ft2°F)]

Liquid at

equilibrium

103.99 -169.16 -272.49 1.22E-03 0.0177 270.7 0.2328 0.1564 1.877
105 -168 -271 1.46E-03 0.0211 269.3 0.2316 0.1556 1.867
115 -158 -253 6.97E-03 0.101 255.6 0.2198 0.1477 1.772
125 -148 -235 0.0253 0.366 242.1 0.2082 0.1399 1.679
135 -138 -217 0.0739 1.07 228.8 0.1967 0.1322 1.586
145 -128 -199 0.183 2.66 216.0 0.1857 0.1248 1.498
155 -118 -181 0.398 5.77 203.5 0.1750 0.1176 1.411
165 -108 -163 0.777 11.3 191.5 0.1647 0.1106 1.328
175 -98.2 -145 1.39 20.2 180.1 0.1549 0.1041 1.249
185 -88.2 -127 2.33 33.9 169.2 0.1455 0.09776 1.173
195 -78.2 -109 3.69 53.5 158.8 0.1365 0.09175 1.101
205 -68.2 -90.7 5.56 80.7 148.8 0.1279 0.08598 1.032
215 -58.2 -72.7 8.05 117 139.2 0.1197 0.08043 0.9651
225 -48.2 -54.7 11.3 164 129.8 0.1116 0.07500 0.9000
235 -38.2 -36.7 15.3 223 120.6 0.1037 0.06968 0.8362
245 -28.2 -18.7 20.4 296 111.5 0.09587 0.06442 0.7731
255 -18.2 -0.7 26.5 384 102.1 0.08779 0.05899 0.7079
265 -8.1 17.3 33.9 492 92.17 0.07925 0.05325 0.6391
275 1.9 35.3 42.8 620 81.58 0.07015 0.04714 0.5656

Gas at

equilibrium

103.99 -169.16 -272.49 1.22E-03 0.0177 6.801 5.85E-03 3.93E-03 0.04715
105 -168 -271 1.46E-03 0.0211 6.739 5.79E-03 3.89E-03 0.04672
115 -158 -253 6.97E-03 0.101 6.622 5.69E-03 3.83E-03 0.04591
125 -148 -235 0.0253 0.366 7.012 6.03E-03 4.05E-03 0.04862
135 -138 -217 0.0739 1.07 7.585 6.52E-03 4.38E-03 0.05259
145 -128 -199 0.183 2.66 8.201 7.05E-03 4.74E-03 0.05686
155 -118 -181 0.398 5.77 8.813 7.58E-03 5.09E-03 0.06110
165 -108 -163 0.777 11.3 9.417 8.10E-03 5.44E-03 0.06529
175 -98.2 -145 1.39 20.2 10.04 8.63E-03 5.80E-03 0.06961
185 -88.2 -127 2.33 33.9 10.70 9.20E-03 6.18E-03 0.07419
195 -78.2 -109 3.69 53.5 11.45 9.85E-03 6.62E-03 0.07939
205 -68.2 -90.7 5.56 80.7 12.31 0.01058 7.11E-03 0.08535
215 -58.2 -72.7 8.05 117 13.35 0.01148 7.71E-03 0.09256
225 -48.2 -54.7 11.3 164 14.61 0.01256 8.44E-03 0.1013
235 -38.2 -36.7 15.3 223 16.19 0.01392 9.35E-03 0.1123
245 -28.2 -18.7 20.4 296 18.25 0.01569 0.01054 0.1265
255 -18.2 -0.7 26.5 384 21.17 0.01820 0.01223 0.1468
265 -8.1 17.3 33.9 492 26.05 0.02240 0.01505 0.1806
275 1.9 35.3 42.8 620 39.17 0.03368 0.02263 0.2716
Liquid 150 -123 -190 1 14.5 209.7 0.1803 0.1212 1.454
169.16 -103.99 -155.18 1 14.5 186.7 0.1605 0.1079 1.294
Gas 169.16 -103.99 -155.18 1 14.5 9.671 8.32E-03 5.59E-03 0.06705
225 -48.2 -54.7 1 14.5 12.90 0.01109 7.45E-03 0.08944
300 26.9 80.3 1 14.5 20.56 0.01768 0.01188 0.1426
375 102 215 1 14.5 31.00 0.02666 0.01791 0.2149
450 177 350 1 14.5 42.20 0.03629 0.02438 0.2926
Liquid 150 -123 -190 10 145 210.7 0.1812 0.1217 1.461
221.33 -51.82 -61.28 10 145 133.2 0.1145 0.07696 0.9235
Gas 221.33 -51.82 -61.28 10 145 14.11 0.01213 0.00815 0.09783
225 -48.2 -54.7 10 145 14.32 0.01231 0.00827 0.09929
300 26.9 80.3 10 145 21.36 0.01837 0.01234 0.1481
375 102 215 10 145 31.53 0.02711 0.01822 0.2186
450 177 350 10 145 42.58 0.03661 0.02460 0.2952

Liquid
150 -123 -190 50 725 214.7 0.1846 0.1241 1.489
225 -48.2 -54.7 50 725 135.1 0.1162 0.07806 0.9367
281.98 8.83 47.89 50 725 145.7 0.1253 0.08418 1.010

Gas
281.98 8.83 47.89 50 725 182.6 0.1570 0.10550 1.266
300 26.9 80.3 50 725 30.86 0.02653 0.01783 0.2140
375 102 215 50 725 35.45 0.03048 0.02048 0.2458
450 177 350 50 725 45.11 0.03879 0.02606 0.3128
Liquid 150 -123 -190 100 1450 219.6 0.1888 0.1269 1.523
225 -48.2 -55 100 1450 140.9 0.1212 0.08141 0.9769

Supercritical
phase

300 27 80 100 1450 79.64 0.06848 0.04602 0.5522
375 102 215 100 1450 45.20 0.03887 0.02612 0.3134
450 177 350 100 1450 50.08 0.04306 0.02894 0.3472
Thermal conductivity unit converter

## Related Topics

### • Fluid Mechanics

The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.

### • Material Properties

Properties of gases, fluids and solids. Densities, specific heats, viscosities and more.

### • Thermodynamics

Work, heat and energy systems.

## Related Documents

### Air - Thermal Conductivity vs. Temperature and Pressure

Online calculator with figures and tables showing air thermal conductivity vs. temperature and pressure. SI and imperial units.

### Ammonia - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and tables showing thermal conductivity of liquid and gaseous ammonia at temperatures ranging -70 to 425 °C (-100 to 800 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Butane - Thermal Conductivity vs. Temperature and Pressure

Online calculators, figures and tables showing thermal conductivity of liquid and gaseous butane, C4H10, at varying temperature and pressure, SI and Imperial units.

### Carbon dioxide - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and table showing thermal conductivity of carbon dioxide, CO2, at temperatures ranging from -50 to 775 °C (-50 to 1400 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Conductive Heat Transfer

Conductive heat transfer takes place in a solid if there is a temperature gradient.

### Ethane - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and table showing thermal conductivity of ethane, C2H6, at varying temperature and pressure - Imperial and SI Units.

### Ethylene - Density and Specific Weight vs. Temperature and Pressure

Online calculator, figures and tables showing density and specific weight of ethylene, C2H4, at varying temperature and pressure - Imperial and SI Units.

### Ethylene - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of ethylene, C2H4, also called ethene or acetene, at varying temperature and pressure - Imperial and SI Units.

### Ethylene - Thermophysical Properties

Chemical, physical and thermal properties of ethylene, also called ethene, acetene and olefiant gas. Phase diagram included.

### Heat Exchanger Materials - Thermal Conductivities

Typical heat exchanger materials and their thermal conductivities.

### Hydrogen - Density and Specific Weight vs. Temperature and Pressure

Online calculator, figures and tables showing density and specific weight of hydrogen, H2, at temperatures ranging from -260 to 325 °C (-435 to 620 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Hydrogen - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and table showing thermal conductivity of hydrogen, H2, at varying temperature and pressure - Imperial and SI Units.

### Liquids - Thermal Conductivities

Some fluids and their thermal conductivities.

### Metals, Metallic Elements and Alloys - Thermal Conductivities

Thermal conductivities of common metals, metallic elements aand alloys.

### Methane - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and table showing thermal conductivity of methane, CH4, at temperatures ranging from -160 to 725 °C (-260 to 1300 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Nitrogen - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and tables showing thermal conductivity of nitrogen, N2, at varying temperarure and pressure, SI and Imperial units.

### Pipes and Cylinders - Conductive Heat Losses

Conductive heat losses through cylinder or pipe walls.

### Plastics - Thermal Conductivity Coefficients

Thermal conductivity of plastics.

### Propane - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and tables showing thermal conductivity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.

### Solids, Liquids and Gases - Thermal Conductivities

Thermal conductivity coefficients for insulation materials, aluminum, asphalt, brass, copper, steel, gases and more.

### Thermal Conductivity - Online Converter

Convert between thermal conductivity units.

### Thermal Conductivity Unit Converter

Convert between thermal conductivity units - table and diagram.

### Thermal Resistivity and Conductivity

The ability of a material to resist flow of heat.

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