The thermodynamic basis for the Clausius–Claypeyron equation for liquid to vapor transition is developed and discussed with specific reference to the heat of vaporization (Lv) for water. Examples using the Clausius–Clapeyron, Antoine, and Richards equations for calculating Lv are presented.Keywords:...
Obtaining the isosteric sorption heat directly by sorption isotherm equations The latent heat of vaporization of water in foodstuffs is an important factor for the design of drying equipments. The thermal properties can be calculated... C Chen - 《Journal of Food Engineering》 被引量: 100发表: ...
2) vaporization heat 气化热 1. Based on the thermodynamic theory of thermal pressure,the equations forvaporization heatof pure substances were derived,and then used to calculate thevaporization heatdata for thirty two substances including some strongly polar compounds,such as methanol,ethanol and acetic...
Using the Clausius Clapeyron equation, find Hvap (heat of vaporization) Homework Equations Clausius Clapeyron equation: ln P= (-delta Hvap/R)*(1/T) + C The Attempt at a Solution I tried using the given slope in the equation as T. Then I tried using y=mb. I multiplied...
The molar heat of vaporization is the energy needed to vaporize one mole of a liquid. The units are usually kilojoules per mole, or kJ/mol. Two possible equations can help you determine the molar heat of vaporization. To calculate the molar heat of vaporization, write down your given informa...
10、, the condensing temperature of the vapor )()(cacbpcchbhphhTTcmTTcm(11.8)- latent heat of vaporization of vapor20*11.3 Heat Flux and Heat-Transfer Coefficientn1. Average temperature of fluid streamn2. Overall heat transfer coefficient and logarithmic mean temperature difference (LMTD)n3. Indiv...
Based on the thermodynamic theory of thermal pressure, the equations for vaporization-heat of pure substances were derived, and then used to calculate the vaporization-heat data for thirty-two substances including some strongly polar compounds, such as, methand, ethanol and acetic acid etc. 基于...
1.The saturated densities, vapour pressures, and latent heats of vaporization for HFC working substances of refrigeration are calculated by using a set of general equations of thermophysical property of liquids.应用一套通用型流体热物性方程对HFC类致冷工质的饱和密度、蒸汽压和汽化潜热进行计算。
In the modeling of solid–liquid phase change a new algorithm to deal with the numerical creep problem in simulation of highly viscous flow is presented. In liquid–gas phase change model the modified pressure Poisson equation considering volume change during vaporization and condensation processes is...
where Le is the latent heat of vaporization and is a function of sea surface temperature (SST, Ts) expressed as Le=(2.501−0.002 37×Ts)×1.06. cp is the specific heat capacity of air at constant pressure; ce and ch are the stability- and height-dependent turbulent exchange coefficients...