latent heat


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latent heat

n.
The quantity of heat absorbed or released by a substance undergoing a change of state, such as ice changing to water or water to steam, at constant temperature and pressure. Also called heat of transformation.

latent heat

n
(General Physics) (no longer in technical usage) the heat evolved or absorbed by unit mass (specific latent heat) or unit amount of substance (molar latent heat) when it changes phase without change of temperature

la′tent heat′


n.
heat absorbed or radiated during a change of phase at constant temperature and pressure.
[1750–60]

la·tent heat

(lāt′nt)
The quantity of heat absorbed or released by a substance undergoing a change of state, such as ice changing to water or water changing to ice, at constant temperature and pressure.

latent heat

1. The quantity of heat which is absorbed or released by a substance during a change of state (fusion or vaporization) at constant temperature.
2. Heat released or absorbed when a substance changes state without a change in temperature.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.latent heat - heat absorbed or radiated during a change of phase at a constant temperature and pressure
heat, heat energy - a form of energy that is transferred by a difference in temperature
heat of condensation - heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid; "the heat of condensation is equal to the heat of vaporization"
heat of fusion - heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature; "the heat of fusion is equal to the heat of solidification"
heat of solidification - heat liberated by a unit mass of liquid at its freezing point when it solidifies
heat of sublimation - heat absorbed by a unit mass of material when it changes from a solid to a gaseous state
heat of vaporisation, heat of vaporization - heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature
References in periodicals archive ?
Traditional condensing boilers recovers latent heat by cooling the flue gas and condensing the water vapor.
The LEEBM showed a correlation coefficient (r) of 0.83, 0.80, 0.84, 0.90, 0.85 and a root-mean-square difference (RMSD) of 63.41, 75.41, 66.16, 118.25 and 150.00 W/m2 with in situ latent heat (LEEC) at five sites in the Rur catchment (Germany), namely, Selhausen, Merzenhausen, Selhausen-Ruraue, Rollesbroich and Wuestebach, respectively.
To calculate the latent heat of vaporization of the water of the product (L) for each condition of hygroscopic equilibrium moisture content of the seeds and for each temperature studied, Eq.
(2009) experimentally studied heat transfer characterisation of five small heat exchangers working as latent heat thermal storage systems during the charge and discharge processes.
where H represents the total enthalpy of PCM, [H.sub.0] is the sensible enthalpy, [DELTA]H is the latent heat, [beta] is the liquid fraction, and [T.sub.m] is the phase transition temperature.
During the phase change, the PCM accumulates the excess heat in form of latent heat. The opposite happens as the temperature lowers towards the phase change temperature and the latent heat is released to the surroundings.
The latent heat and phase change temperature of the samples are measured using DSC.
Reanalysis data include CFSR (Climate Forecast System Reanalysis) land surface temperature, soil moisture, latent heat flux, and surface evaporation, as well as NASA (National Aeronautics and Space Administration) GLDAS (Global Land Data Assimilation System) soil moisture data.
Eddy-covariance calculations of sensible and latent heat fluxes were done using the EddyPro software (LI-COR, Inc.) which incorporates all necessary raw data filtering and corrections.
As air flow rate (AFR) increases, total capacity (Figure 4 and Figure 5), sensible capcity (Figure 6 and Figure 7) and airside pressure drop (Figure 10 and Figure 11) all increase while latent heat may increase or decrease (Figure 8 and Figure 9).
A tropical cyclone (synonymous with hurricane) is an intense, low-level atmospheric warm-core vortex that originates over tropical oceans and is energetically driven principally by latent heat of evaporation from the ocean surface.