Abstract
The SPUNG (State Research Program for Utilization of Natural Gas) flow calorimeter is built for taking measurements of enthalpy and this particular one has a total accuracy of 0.35 kJ/kg. Today about 2450 enthalpy measurements have been taken for pure nitrogen, methane, ethane, propane together with binary and ternary mixtures of these. Almost 2600 experimental enthalpy measurements have been collected from literature. In addition the literature enthalpy data cover more heavy hydrocarbon components compared to the measurements from the SPUNG flow calorimeter. Approximately 650 of the enthalpy measurements are of CFC (Chlorine-Fluorine-Carbon) components. An equation of state (SPUNG equation of state) is deduced and a computer program made for it. This is built on the principle of extended corresponding state with one reference fluid. The possibility to change reference fluid is included. For mixtures the van der Waals one-fluid theory is used. Calculation of the shape factors is built on J. Mollerup`s theory, where the shape factors are calculated from one of the three-cubic equations of state, SRK, GDSRK or PR. The extended virial equation of state MBWR-32 is used as the reference equation of state. In calculation of ordinary hydrocarbon mixtures, propane will be preferred as reference fluid. The
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Citation Formats
Joerstad, O.
Equation of state for hydrocarbon mixtures.
Norway: N. p.,
1993.
Web.
Joerstad, O.
Equation of state for hydrocarbon mixtures.
Norway.
Joerstad, O.
1993.
"Equation of state for hydrocarbon mixtures."
Norway.
@misc{etde_10142796,
title = {Equation of state for hydrocarbon mixtures}
author = {Joerstad, O}
abstractNote = {The SPUNG (State Research Program for Utilization of Natural Gas) flow calorimeter is built for taking measurements of enthalpy and this particular one has a total accuracy of 0.35 kJ/kg. Today about 2450 enthalpy measurements have been taken for pure nitrogen, methane, ethane, propane together with binary and ternary mixtures of these. Almost 2600 experimental enthalpy measurements have been collected from literature. In addition the literature enthalpy data cover more heavy hydrocarbon components compared to the measurements from the SPUNG flow calorimeter. Approximately 650 of the enthalpy measurements are of CFC (Chlorine-Fluorine-Carbon) components. An equation of state (SPUNG equation of state) is deduced and a computer program made for it. This is built on the principle of extended corresponding state with one reference fluid. The possibility to change reference fluid is included. For mixtures the van der Waals one-fluid theory is used. Calculation of the shape factors is built on J. Mollerup`s theory, where the shape factors are calculated from one of the three-cubic equations of state, SRK, GDSRK or PR. The extended virial equation of state MBWR-32 is used as the reference equation of state. In calculation of ordinary hydrocarbon mixtures, propane will be preferred as reference fluid. The SPUNG equation of state is robust and may calculate thermodynamic and physical properties of the same components that the cubic equations of state SRK, GDSRK, and PR do, without the fitting of any parameters. The SPUNG equation of state calculates enthalpy with an accuracy of 2.0 kJ/kg which is equivalent to 4.2%. That means that the SPUNG equation of state calculates enthalpy with a 30% greater accuracy than the cubic equations of state SRK, GDSRK and PR do. 123 refs., 19 figs., 10 tabs.}
place = {Norway}
year = {1993}
month = {Dec}
}
title = {Equation of state for hydrocarbon mixtures}
author = {Joerstad, O}
abstractNote = {The SPUNG (State Research Program for Utilization of Natural Gas) flow calorimeter is built for taking measurements of enthalpy and this particular one has a total accuracy of 0.35 kJ/kg. Today about 2450 enthalpy measurements have been taken for pure nitrogen, methane, ethane, propane together with binary and ternary mixtures of these. Almost 2600 experimental enthalpy measurements have been collected from literature. In addition the literature enthalpy data cover more heavy hydrocarbon components compared to the measurements from the SPUNG flow calorimeter. Approximately 650 of the enthalpy measurements are of CFC (Chlorine-Fluorine-Carbon) components. An equation of state (SPUNG equation of state) is deduced and a computer program made for it. This is built on the principle of extended corresponding state with one reference fluid. The possibility to change reference fluid is included. For mixtures the van der Waals one-fluid theory is used. Calculation of the shape factors is built on J. Mollerup`s theory, where the shape factors are calculated from one of the three-cubic equations of state, SRK, GDSRK or PR. The extended virial equation of state MBWR-32 is used as the reference equation of state. In calculation of ordinary hydrocarbon mixtures, propane will be preferred as reference fluid. The SPUNG equation of state is robust and may calculate thermodynamic and physical properties of the same components that the cubic equations of state SRK, GDSRK, and PR do, without the fitting of any parameters. The SPUNG equation of state calculates enthalpy with an accuracy of 2.0 kJ/kg which is equivalent to 4.2%. That means that the SPUNG equation of state calculates enthalpy with a 30% greater accuracy than the cubic equations of state SRK, GDSRK and PR do. 123 refs., 19 figs., 10 tabs.}
place = {Norway}
year = {1993}
month = {Dec}
}