Physical properties of selected thermochemical fluids

The electronic library for "Visual Basic for Applications" (VBA) contains functions for calculating thermodynamic data for various acqueous solutions. Functions of the substance data library Description Function call Solubility limit TX(TCF, x [-]) [°C] Maximum solubility XT(TCF, t [°C]) [-] Vapor pressure PTX(TCF, t [°C], x [-]) [bar] Boiling temperature TPX(TCF, p [bar], x [-]) [°C] Density DTX(TCF, t [°C], x [-]) [kg/m3] Mass fraction of electrolyte XTD(TCF, t [°C], d [kg/m3]) [-] Specific heat capacity CTX(TCF, t [°C], x [-]) [kJ/(kg K)] Dynamic viscosity VTX(TCF, t [°C], x [-]) [kg/(m s)] Thermal conductivity LTX(TCF, t [°C], x [-]) [W/(m K)] Phase change enthalpy HPX(TCF, p [bar], x [-]) [kJ/kg] Specific exergy ETX(TCF, t [°C], x [-]) [kJ/kg] Temperature lift TTX(TCF, t [°C], x [-]) [K] Vapor pressure reduction FTX(TCF, t [°C], x [-]) [-] Fluids implemented in the data library TCF Designation Lithium bromide - Water LiBr - H2O LIBR Lithium chloride - Water LiCl - H2O LICL Magnesium chloride - Water MgCl2 - H2O MGCL2 Calcium chloride - Water CaCl2 - H2O CACL2 Calcium nitrate - Water Ca(NO3)2 - H2O CA(NO3)2 Sodium hydroxide - Water NaOH - H2O NAOH Error codes Error Output code TCF is not included in the library -9999.1 Input values are not plausible, i.e. the following boundary conditions are not met: , , , , -9999.2 Electrolyte concentration too low (Figs. 1 and 2: blue border) -9999.3 Electrolyte concentration too high (Figs. 1 and 2: red border): or When calculating the temperature lift TTX, the solubility is checked at the absorption temperature: -9999.4 Temperature too low (Figs. 1 und 2: green border): oder This check does not apply to the TX and XT functions. -9999.5 Temperature too high (Figs. 1 und 2: violet border): or (All functions are checked) When calculating the temperature lift TTX, the absorption temperature is checked: Temperature is above the boiling point at 1.1 bar (Fig. 2: violet border): or or (The TX, XT, PTX and TPX functions are not checked) -9999.6