Ethane Thermal Properties
Reference data and engineering information about ethane thermal properties for thermodynamics applications.
ethanethermalpropertiesData Table
Overview
Engineering reference data for Ethane Thermal Properties in thermodynamics.
Key Formulas
First Law
Energy is conserved — heat added minus work done.
Ideal Gas Law
Relates pressure, volume, and temperature of an ideal gas.
Heat Transfer
Sensible heat transfer.
Carnot Efficiency
Maximum efficiency between two temperatures.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Internal energy | J | |
| Heat | J | |
| Work | J | |
| Pressure | Pa | |
| Volume | m³ | |
| Temperature | K |
20 rows
Temperature (T)(K) | Pressure (p)(kPa) | Enthalpy (h)(kJ/kg) | Entropy (s)(kJ/kgK) | Specific Heat Capacity (cᵥ)(kJ/kgK) | Specific Heat (cₚ)(kJ/kgK) | Speed of Sound (c)(m/s) | Density (ρ)(kg/m³) |
|---|---|---|---|---|---|---|---|
| 90.368 (Triple Point) | 0.0011 | -889 | -5.06 | 1.61 | 2.33 | 2008 | 652 |
| 120 | 0.352 | -821 | -4.41 | 1.48 | 2.28 | 1794 | 619 |
| 150 | 9.64 | -752 | -3.90 | 1.44 | 2.33 | 1576 | 585 |
| 160 | 21.4 | -729 | -3.75 | 1.44 | 2.36 | 1501 | 574 |
| 170 | 42.8 | -705 | -3.60 | 1.43 | 2.39 | 1426 | 562 |
| 180 | 78.6 | -681 | -3.46 | 1.43 | 2.42 | 1350 | 550 |
| 184 | 98.3 | -671 | -3.41 | 1.44 | 2.44 | 1320 | 545 |
| 186 (STP) | 109.4 | -666 | -3.38 | 1.44 | 2.45 | 1305 | 542 |
| 190 | 134.6 | -656 | -3.33 | 1.44 | 2.46 | 1274 | 537 |
| 200 | 217.2 | -631 | -3.21 | 1.44 | 2.51 | 1196 | 524 |
| 210 | 333.8 | -606 | -3.08 | 1.45 | 2.57 | 1117 | 510 |
| 220 | 492.1 | -580 | -2.96 | 1.47 | 2.65 | 1037 | 496 |
| 230 | 700.2 | -553 | -2.84 | 1.49 | 2.73 | 956 | 481 |
| 240 | 966.8 | -525 | -2.73 | 1.51 | 2.85 | 873 | 465 |
| 250 | 1301 | -496 | -2.61 | 1.53 | 2.99 | 788 | 448 |
| 260 | 1711 | -465 | -2.49 | 1.57 | 3.20 | 701 | 429 |
| 270 | 2210 | -432 | -2.38 | 1.61 | 3.49 | 609 | 408 |
| 280 | 2807 | -397 | -2.25 | 1.65 | 3.99 | 512 | 383 |
| 300 | 4357 | -305 | -1.95 | 1.91 | 10.02 | 275 | 304 |
| 305.322 (Critical Point) | 4872 | -230.7 | -1.71 |
Source: engineeringtoolbox.com
Additional Phase Properties
The data table covers the liquid region from the triple point to the critical point:
- Triple Point: The unique temperature and pressure where the solid, liquid, and vapor phases coexist in equilibrium (90.368 K for ethane).
- Critical Point (305.322 K, 4872 kPa): The temperature and pressure above which distinct liquid and gas phases do not exist; the substance becomes a supercritical fluid.
- Standard Temperature and Pressure (STP): A common reference point (186 K, 109.4 kPa for this table) is included in the dataset.
Key trends from the table:
- Density (
ρ) and speed of sound (c) decrease significantly as temperature increases towards the critical point. - Specific heat at constant pressure (
cₚ) increases dramatically near the critical point, exhibiting a characteristic divergence associated with critical phenomena. - Enthalpy (
h) and entropy (s) increase (become less negative) with temperature, reflecting the added energy in the system.