“latent heat”的概念、定义、翻译、参考文献-科学参考

latent heat

Physics

Symbol L. The quantity of heat absorbed or released when a substance changes its physical phase at constant temperature (e.g. from solid to liquid at the melting point or from liquid to gas at the boiling point). For example, the latent heat of vaporization is the energy a substance absorbs from its surroundings in order to overcome the attractive forces between its molecules as it changes from a liquid to a gas and in order to do work against the external atmosphere as it expands. In thermodynamic terms the latent heat is the enthalpy of evaporation (Δ‎H), i.e. L=Δ‎H=Δ‎U+pΔ‎V, where Δ‎U is the change in the internal energy, p is the pressure, and Δ‎V is the change in volume.

The specific latent heat (symbol l) is the heat absorbed or released per unit mass of a substance in the course of its isothermal change of phase. The molar latent heat is the heat absorbed or released per unit amount of substance during an isothermal change of state.

Chemistry

The quantity of heat absorbed or released when a substance changes its physical phase at constant temperature (e.g. from solid to liquid at the melting point or from liquid to gas at the boiling point). For example, the latent heat of vaporization is the energy a substance absorbs from its surroundings in order to overcome the attractive forces between its molecules as it changes from a liquid to a gas and in order to do work against the external atmosphere as it expands. In thermodynamic terms the latent heat is the enthalpy of evaporation (Δ‎H), i.e. L = Δ‎H = Δ‎U + pΔ‎V, where Δ‎U is the change in the internal energy, p is the pressure, and Δ‎V is the change in volume.
The specific latent heat (symbol l) is the heat absorbed or released per unit mass of a substance in the course of its isothermal change of phase. The molar latent heat is the heat absorbed or released per unit amount of substance during an isothermal change of state.

Chemical Engineering

Literally meaning ‘hidden heat’, it is the quantity of heat absorbed or released when a substance changes its physical phase at constant temperature and pressure. The latent heat of fusion is the energy needed to be removed to solidify a liquid, whereas the latent heat of vaporization is the energy required to be absorbed to change a liquid to a gas. The specific latent heat is the heat energy absorbed or released per unit mass at constant temperature, while the molar latent heat is measured per mole of substance. The SI units are J kg⁻¹ or J mol⁻¹, respectively.

Geography

The quantity of heat absorbed or released when a substance changes its physical state at constant temperature. The release of latent heat of condensation in the rising air of a hurricane is the chief force fuelling that meteorological phenomenon. See Grossman and Rodenhuis (1975) Monthly Weather Rev. 103, 6. The latent heat flux is the flux of heat from the Earth’s surface to the atmosphere that is associated with evaporation or transpiration of water at the surface and the subsequent condensation of water vapour in the troposphere. It is an important component of Earth’s surface energy budget.

单词	latent heat
释义	latent heat Physics Symbol L. The quantity of heat absorbed or released when a substance changes its physical phase at constant temperature (e.g. from solid to liquid at the melting point or from liquid to gas at the boiling point). For example, the latent heat of vaporization is the energy a substance absorbs from its surroundings in order to overcome the attractive forces between its molecules as it changes from a liquid to a gas and in order to do work against the external atmosphere as it expands. In thermodynamic terms the latent heat is the enthalpy of evaporation (Δ‎H), i.e. L=Δ‎H=Δ‎U+pΔ‎V, where Δ‎U is the change in the internal energy, p is the pressure, and Δ‎V is the change in volume. The specific latent heat (symbol l) is the heat absorbed or released per unit mass of a substance in the course of its isothermal change of phase. The molar latent heat is the heat absorbed or released per unit amount of substance during an isothermal change of state. Chemistry The quantity of heat absorbed or released when a substance changes its physical phase at constant temperature (e.g. from solid to liquid at the melting point or from liquid to gas at the boiling point). For example, the latent heat of vaporization is the energy a substance absorbs from its surroundings in order to overcome the attractive forces between its molecules as it changes from a liquid to a gas and in order to do work against the external atmosphere as it expands. In thermodynamic terms the latent heat is the enthalpy of evaporation (Δ‎H), i.e. L = Δ‎H = Δ‎U + pΔ‎V, where Δ‎U is the change in the internal energy, p is the pressure, and Δ‎V is the change in volume. The specific latent heat (symbol l) is the heat absorbed or released per unit mass of a substance in the course of its isothermal change of phase. The molar latent heat is the heat absorbed or released per unit amount of substance during an isothermal change of state. Chemical Engineering Literally meaning ‘hidden heat’, it is the quantity of heat absorbed or released when a substance changes its physical phase at constant temperature and pressure. The latent heat of fusion is the energy needed to be removed to solidify a liquid, whereas the latent heat of vaporization is the energy required to be absorbed to change a liquid to a gas. The specific latent heat is the heat energy absorbed or released per unit mass at constant temperature, while the molar latent heat is measured per mole of substance. The SI units are J kg⁻¹ or J mol⁻¹, respectively. Geography The quantity of heat absorbed or released when a substance changes its physical state at constant temperature. The release of latent heat of condensation in the rising air of a hurricane is the chief force fuelling that meteorological phenomenon. See Grossman and Rodenhuis (1975) Monthly Weather Rev. 103, 6. The latent heat flux is the flux of heat from the Earth’s surface to the atmosphere that is associated with evaporation or transpiration of water at the surface and the subsequent condensation of water vapour in the troposphere. It is an important component of Earth’s surface energy budget.
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