In the present work, we set ourselves the task of obtaining a correlation equation for use in calculating the heat of vaporization L of a wide class of nonpolar substances with an accuracy better than can be obtained with the currently available calculation methods. Data for the n-paraffins ...
L = Latent heat of vaporization = 2.453 × 10^6 J/kg Rv = Gas constant for moist air = 461 J/kg T = Temperature in Kelvins Method #2 The mixing ratio is defined as the mass of water vapor divided by the mass of dry air. In a lab setting, the lab technician could measure both...
where md is the mass of the droplet, cp,l is the liquid-phase specific heat capacity, hd is the droplet heat transfer coefficient, calculated from Nu. L is the latent heat of vaporization, calculated by the Watson equation (Poling et al. 2001). The reference temperature, Tref, and mass...
Hess's Law, also known as "Hess's Law of Constant Heat Summation," states that the total enthalpy of a chemical reaction is the sum of the enthalpy changes for the steps of the reaction. Therefore, you can find enthalpy change by breaking a reaction into component steps that have known ...
Fuel vaporization and ignition lag diesel combustion H. Hiroyasu et al. Development and use of a spray combustion modelling to predict diesel engine efficiency and pollutant emissions: Part 2. Computational procedure and parametric study Bulletin of the JSME (1983) There are more references available...
Calculations can be performed along the liquid side of the H2O vaporization boundary by specifying either temperature (T) or pressure (P), and in the single-phase regions of fluid H2O by specifying either T and P, T and H2O density, T and log K, or P and log K. SPRONS92.DAT, ...
Standard Practice for Calculating Heat of Vaporization or Sublimation from VaporRelationship, Temperature
The latent heat of vaporization of a pure substance is often required in many engineering design/process calculations. Knowledge of the latent heat of vaporization can be of particular value when dealing with a material for which complete enthalpy data are not available. A method has been ...
Standard Practice for Calculating Heat of Vaporization or Sublimation from Vapor Pressure Datadoi:ASTM E2071-00(2005)1.1本规程描述了根据测量的蒸汽压数据计算液体汽化热或固体升华热.它适用于温度范围内的纯液体,共沸物,纯固体和均质固溶体,适用于与测量数据拟合的蒸汽压方程.\n注1\n这种做法通常不适用于...
E37.10E.ASTM E2071, Standard Practice for Calculating Heat of Vaporization or Sublimation from Vapor Pressure Data (2010)