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Online Water Heat of Vaporization Calculator. The calculator below can be used to calculate the liquid water heat of vaporization at vapor pressure at given temperatures. The output heat is given as kJ/mol, kJ/kg, kWh/kg, cal/g, Btu(IT)/mol and Btu(IT)/lb m. Note!
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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 latent heat of evaporation for water is 2256 kJ/kg at atmospheric pressure and 100oC. The heat required to evaporate 10 kg can be calculated as. q = (2256 kJ/kg) (10 kg) = 22560 kJ. Latent heat of vaporization for fluids like alcohol, ether, nitrogen, water and more.
17 lip 2023 · The latent heat of vaporization formula is written as L = Q/m, which was gotten from Q = mL. Where: Q = Quantity of heat in joules (J), m = mass of substance in kg, L = specific latent heat of vaporization in J/kg. Additionally, if the heat is supplied from an electric heater, the following equations apply.
In thermodynamics, the enthalpy of vaporization (symbol ∆Hvap), also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.
Latent heat is measured in units of J/kg. Both \(L_f\) and \(L_v\) depend on the substance, particularly on the strength of its molecular forces as noted earlier. \(L_f\) and \(L_v\) are collectively called latent heat coefficients.
For example, for water the value of specific heat capacity is 4186 J/kgK while for ice or water vapour, it is 2100 J/kgK. This is true for latent heats as well. For example, latent heat of fusion for ice is 334 000 J/kg and the latent heat of vaporization for water is 2 224 000 J/kg.
