Liquid Ammonia - Thermal Properties at Saturation Pressure
At atmospheric pressure, ammonia, NH3, is present as a liquid at temperatures below -33.6 °C (-28.5 °F). At 10 bara, the condensation/boiling point is 25 °C (77 °F). For more details about phase transitions, see ammonia phase diagram.
Below the tables, properties of liquid ammonia at saturation pressure as function of temperatur, are shown in figures.
Thermal properties of liquid ammonia at saturation pressure:
| Temperature - t - (oC) | Density - ρ - (kg/m3) |
Specific Heat | Thermal Conductivity - λ - (W/(m K)) | Dynamic Viscosity - η - (10-6 Pa s) | Prandtl's no. |
|---|---|---|---|---|---|
| -50 | 698 | 4.45 | 0.547 | 317 | 1.98 |
| 0 | 636 | 4.61 | 0.540 | 169 | 1.40 |
| 20 | 609 | 4.74 | 0.521 | 138 | 1.29 |
| 50 | 561 | 5.08 | 0.477 | 103 | 1.26 |
| Temperature - t - (oF) | Density - ρ - (lb/ft3) |
Specific Heat | Thermal Conductivity - λ - (Btu/(hr ft oF) | Dynamic Viscosity - η - (10-6 lb/(ft s)) | Prandtl's no. |
|---|---|---|---|---|---|
| -58 | 43.4 | 1.06 | 0.32 | 213 | 1.98 |
| 32 | 39.7 | 1.10 | 0.31 | 113 | 1.40 |
| 68 | 38 | 1.13 | 0.3 | 93 | 1.29 |
| 122 | 35 | 1.21 | 0.28 | 69 | 1.26 |
Related Topics
• Air Conditioning
Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort.
• Fluid Mechanics
The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.
• Material Properties
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
• Thermodynamics
Work, heat and energy systems.
Related Documents
Air - Thermophysical Properties
Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more.
Ammonia - NH3 - Concentration in Air and Health Effects
Ammonia and health symptoms - smell and threat to life.
Ammonia - NH3 - Thermodynamic Properties
Thermodynamic properties of saturated and superheated ammonia R-717 like specific volume, enthalpy and entropy.
Ammonia - Dynamic and Kinematic Viscosity vs. Temperature and Pressure
Online calculator, figures and tables showing dynamic (absolute) and kinematic viscosity of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 1000 bara (14.5 - 14500 psia) - SI and Imperial Units.
Ammonia - Prandtl Number vs. Temperature and Pressure
Figures and table with changes in Prandtl number for ammonia with changes in temperature and pressure.
Ammonia - Properties at Gas-Liquid Equilibrium Conditions
Figures and tables showing how the properties of liquid and gaseous ammonia changes along the boiling/condensation curve (temperature and pressure between triple point and critical point conditions). An ammonia phase diagram are included.
Ammonia - Specific Heat vs. Temperature and Pressure
Online calculator, figures and tables showing specific heat, CP and CV, of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - 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.
Ammonia - Thermophysical Properties
Chemical, Physical and Thermal Properties of Ammonia. Phase diagram included.
Ammonia - Vapour Pressure at Gas-Liquid Equilibrium
Figures and table with ammonia saturation pressure at boiling points, SI and Imperial units.
Ammonia Gas - Density vs. Temperature and Pressure
Online calculator with figures and tables showing density and specific weight of ammonia for temperatures ranging -50 to 425 °C (-50 to 800 °F) at atmospheric and higher pressure - Imperial and SI Units.
Critical Temperatures and Pressures for some Common Substances
Critical temperatures and pressures for some common substances like air, alcohol, ether, oxygen and more.
Liquids and Fluids - Specific Heats
Specific heats for some common liquids and fluids - acetone, oil, paraffin, water and many more.
Solubility of Gases in Water vs. Temperature
Solubility of Ammonia, Argon, Carbon Dioxide, Carbon Monoxide, Chlorine, Ethane, Ethylene, Helium, Hydrogen, Hydrogen Sulfide, Methane, Nitrogen, Oxygen and Sulfur Dioxide in water.
Water - Thermal Conductivity vs. Temperature
Figures and tables showing thermal conductivity of water (liquid and gas phase) with varying temperature and pressure, SI and Imperial units.
Water - Thermophysical Properties
Thermal properties of water at different temperatures like density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more.