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Online calculator, figures and tables showing heat of vaporization of water, at temperatures from 0 - 370 °C (32 - 700 °F) - SI and Imperial units.
- Seawater
Figures and tables showing the enthalpy and entropy of...
- Compressed Water
Online calculator, figures and tables showing heat of...
- Supercooled Water
Online calculator, figures and tables showing heat of...
- Boiling Points at High Pressure
Thermodynamic properties of heavy water (D2O) like density,...
- Thermodynamics
Energy required to heat up a substance. Heavy Water -...
- Properties at Gas-Liquid Equilibrium Conditions
Thermal properties of water at different temperatures like...
- Saturation Pressure
Vapor pressure and specific weight of water at temperatures...
- Boiling Points at Vacuum Pressure
See also other properties of Water at varying temperature...
- Seawater
The latent heat calculator helps you compute the energy released or absorbed during a phase transition like melting or vaporizing. In the text below, we explain what is specific latent heat and present a simple latent heat calculation.
The specific latent heat of vaporization of water, L, is found by a method of mixtures using a set up shown in figure 7.2. Water is boiled in flask F and the steam is introduced into the calorimeter via a vessel V which traps any water. Fig. 7.2.
In thermodynamics, the enthalpy of vaporization (symbol ∆H vap), also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance to transform a quantity of that substance into a gas.
The heat \(Q\) required to change the phase of a sample of mass \(m\) is given by \[ Q = mL_f (melting/freezing),\] \[Q = mL_v (vaporization/condensation),\] where the latent heat of fusion, \(L_f\), and latent heat of vaporization, \(L_v\), are material constants that are determined experimentally.
Latent heat of vaporization: Heat necessary to transform 1 kg of ebullient water into vapour without change of temperature (thermal energy necessary during the change of state liquid to the state vapour).
It is an important thermodynamic property for thermal desalination and water treatment processes, especially when water is separated by vaporization. This chapter introduced the thermodynamic approaches, correlation, and data used to estimate latent heat of vaporization at different salinity and temperature values.
