Research Article

System Model of Heat and Mass Transfer Process for Mobile Solvent Vapor Phase Drying Equipment

Table 4

Parameters used in simulation process.

The physical meaning of parametersSymbolValueUnit

Voltage class500kV
Transformer capacity750MVA
Flow of logistics 1 kg/s
Universal gas constant[J/(mol·K)]
Heating powerkW
Pipe radius of logistics 2 mm
Pipe radius of logistics 3mm
Pipe length of logistics 2mm
Pipe length of logistics 3mm
Gas volume of evaporatorm3
Gas volume of transformer tankm3
Heat transfer area of evaporatorm2
Heat transfer area of transformer tank m2
Specific heat capacity of solvent vaporJ/kg·K
Specific heat capacity of insulation materials J/kg·K
Specific heat capacity of copper wire J/kg·K
Specific heat capacity of iron coreJ/kg·K
Specific heat capacity of tankJ/kg·K
Mass of insulation materialskg
Mass of copper wirekg
Mass of iron corekg
Mass of box kg
Mass density of air (at 130°C)kg/m3
Mass density of solvent kg/m3
Mass density of water kg/m3
Molar mass of airg/mol
Molar mass of water steamg/mol
Molar mass of waterg/mol
Molar mass of solvent vapor g/mol
Molar mass of solvent liquidg/mol
Solvent enthalpy in the evaporatorJ/kg
Solvent enthalpy in logistics 6J/kg
Solvent enthalpy in transformer tankJ/kg
Viscosity coefficient of logistics 2Pa·s
Viscosity coefficient of airPa·s
Viscosity coefficient of solvent vapor Pa·s
Viscosity coefficient of water steamPa·s
Heat transfer coefficient of water W/m2·Pa
Heat transfer coefficient of solventW/m2·Pa
Maximum mass of condensed solvent in tankkg
Leakage pump pressure4500 (heating)
2500 (IPL)
Pa