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Latent heat
About: Latent heat is a research topic. Over the lifetime, 13503 publications have been published within this topic receiving 302811 citations.
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TL;DR: In this article, a sequence of experiments has been performed to measure thermal properties of liquid and solid 3 He between the temperatures 1 and 25 mK at melting curve densities, and a two-phase mixture of 3 He sample was self-cooled by the Pomeranchuk method.
Abstract: A sequence of experiments has been performed to measure thermal properties of liquid and solid 3
He between the temperatures 1 and 25 mK at melting curve densities. A two-phase mixture of 3
He sample was self-cooled by the Pomeranchuk method. A heat pulse technique was used, combined with measurements of pressure and volume, to yield separate determinations of liquid and solid properties: the specific heat of liquid 3
He in the normal Fermi liquid and superfluid phases; the entropy of solid 3
He above and through a nuclear magnetic transition at 1.10 mK; and an absolute thermodynamic temperature scale based on measurement of latent heat of conversion of liquid to solid.
84 citations
TL;DR: In this paper, a new form of a capillary potential/temperature formulation of heat and mass transfer in unsaturated soil is presented, which accommodates moisture transfer in both the vapor and liquid phases and heat transfer by means of conduction and latent heat of vaporization effects.
Abstract: A new form of a capillary potential/temperature formulation of heat and mass transfer in unsaturated soil is presented. Moisture transfer in both the vapor and liquid phases and heat transfer by means of conduction and latent heat of vaporization effects are accommodated in a one‐dimensional approach. A numerical solution of the complete formulation is then developed, based on the use of the finite‐element method, to describe spatial variations and a finite‐difference time‐stepping scheme to model transient behavior. The application of the model is then presented, making use of material parameters that have been independently established for all the soil properties specified in the formulation. A comprehensive, consistent approach is therefore claimed to be proposed. The results obtained are shown to be qualitatively correct throughout, conforming with physically realistic behavior. For a number of aspects of the work, it proved possible to examine precisely the validity of the results achieved, and in al...
84 citations
TL;DR: In this article, the impacts of the latent heat of fusion on the rapid intensification of Hurricane Wilma (2005) were examined by comparing a 72-h control simulation (CTL) of the storm to a sensitivity simulation in which the Latent Heat of depositionis reduced by removing fusion heating (NFUS).
Abstract: The impacts of the latent heat of fusion on the rapid intensification (RI) of Hurricane Wilma (2005) are examined by comparing a 72-h control simulation (CTL) of the storm to a sensitivity simulation in which the latent heat of depositionis reduced by removing fusion heating (NFUS). Resultsshow that, while both storms undergo RI, the intensificationrate is substantially reducedin NFUS. At peakintensity, NFUSis weakerthan CTL by 30hPa in minimum central pressure and by 12ms 21 in maximum surface winds. The reduced rate of surface pressure falls in NFUS appears to result hydrostatically from less upper-level warming in the eye. It is shown that CTL generates more inner-core convective bursts (CBs) during RI, with higher altitudes of peak vertical motion in the eyewall, compared to NFUS. The latent heat of fusion contributes positively to sufficient eyewall conditional instability to support CB updrafts. Slantwise soundings taken in CB updraft cores reveal moist adiabatic lapse rates until 200hPa, where the updraft intensity peaks. These results suggest that CBsmayimpacthurricaneintensificationbyinducingcompensatingsubsidenceofthelower-stratosphericair, and the authors conclude that the development of more CBs inside the upper-level radius of maximum wind and at the higher altitude of latent heating all appear to be favorable for the RI of Wilma.
84 citations
TL;DR: In this article, a coupled core-mantle evolution model that combines a global heat balance in the core with a fully dynamic thermo-chemical mantle convection model is developed to investigate the thermal evolution of the core over the 4.5 Gyr of Earth history.
84 citations
TL;DR: In this paper, the authors compared the Priestley and Taylor (1972) model with the energy budget approach for two shallow lakes and two sedge meadow surfaces in northern Canada.
Abstract: Summertime latent heat flux values determined by the energy budget approach are compared to equilibrium model estimates for two shallow lakes and two sedge meadow surfaces in northern Canada. Comparison of energy budget values with equilibrium estimates for each surface show that the latent heat flux can be accurately determined by the Priestley and Taylor (1972) model, where α the ratio of actual to equilibrium evaporation equals 1.26. Results suggest that the Priestley and Taylor parameter is generally applicable to saturated surfaces in high latitudes.
84 citations