.. _fluid_CarbonDioxide:

*************
CarbonDioxide
*************

References
==========
Equation of State
-----------------

.. raw:: html

   R.&nbsp;Span and W.&nbsp;Wagner. <span class="bibtex-protected">A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple Point Temperature to 1100 K at Pressures up to 800 MPa</span>. <em>J. Phys. Chem. Ref. Data</em>, 25:1509&ndash;1596, 1996. <a href="https://doi.org/10.1063/1.555991">doi:10.1063/1.555991</a>.

Thermal Conductivity
--------------------

.. raw:: html

   M.&nbsp;L. Huber, E.&nbsp;A. Sykioti, M.&nbsp;J. Assael, and R.&nbsp;A. Perkins. Reference correlation of the thermal conductivity of carbon dioxide from the triple point to 1100 k and up to 200 mpa. <em>Journal of Physical and Chemical Reference Data</em>, 2016. <a href="https://doi.org/10.1063/1.4940892">doi:10.1063/1.4940892</a>.

Viscosity
---------

.. raw:: html

   A.&nbsp;Laesecke and C.&nbsp;D. Muzny. Reference correlation for the viscosity of carbon dioxide. <em>Journal of Physical and Chemical Reference Data</em>, 2017. <a href="https://doi.org/10.1063/1.4977429">doi:10.1063/1.4977429</a>.

Melting Line
------------

.. raw:: html

   R.&nbsp;Span and W.&nbsp;Wagner. <span class="bibtex-protected">A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple Point Temperature to 1100 K at Pressures up to 800 MPa</span>. <em>J. Phys. Chem. Ref. Data</em>, 25:1509&ndash;1596, 1996. <a href="https://doi.org/10.1063/1.555991">doi:10.1063/1.555991</a>.

Surface Tension
---------------

.. raw:: html

   A.&nbsp;Mulero, I.&nbsp;Cachadiña, and M.&nbsp;I. Parra. <span class="bibtex-protected">Recommended Correlations for the Surface Tension of Common Fluids</span>. <em>J. Phys. Chem. Ref. Data</em>, 41(4):043105&ndash;1:13, 2012. <a href="https://doi.org/10.1063/1.4768782">doi:10.1063/1.4768782</a>.



Aliases
=======

``R744``, ``co2``, ``CO2``, ``carbondioxide``, ``CARBONDIOXIDE``


Fluid Information
=================

.. csv-table::
   :header-rows: 1
   :escape: @
   :widths: 40, 60
   :delim: ;
   :file: CarbonDioxide-info.csv

REFPROP Validation Data
=======================

.. note::

    This figure compares the results generated from CoolProp and those generated from REFPROP.  They are all results obtained in the form :math:`Y(T,\rho)`, where :math:`Y` is the parameter of interest and which for all EOS is a direct evaluation of the EOS

    You can download the script that generated the following figure here: :download:`(link to script)<REFPROPplots/CarbonDioxide.py>`, right-click the link and then save as... or the equivalent in your browser.  You can also download this figure :download:`as a PDF<REFPROPplots/CarbonDioxide.pdf>`.

.. image:: REFPROPplots/CarbonDioxide.png

Consistency Plots
=================

The following figure shows all the flash routines that are available for this fluid.  A red + is a failure of the flash routine, a black dot is a success.  Hopefully you will only see black dots.  The red curve is the maximum temperature curve, and the blue curve is the melting line if one is available for the fluid.

In this figure, we start off with a state point given by T,P and then we calculate each of the other possible output pairs in turn, and then try to re-calculate T,P from the new input pair.  If we don't arrive back at the original T,P values, there is a problem in the flash routine in CoolProp.  For more information on how these figures were generated, see :py:mod:`CoolProp.Plots.ConsistencyPlots`

.. note::

    You can download the script that generated the following figure here: :download:`(link to script)<Consistencyplots/CarbonDioxide.py>`, right-click the link and then save as... or the equivalent in your browser.  You can also download this figure :download:`as a PDF<Consistencyplots/CarbonDioxide.pdf>`.

.. image:: Consistencyplots/CarbonDioxide.png

Superancillary Plots
====================

The following figure shows the accuracy of the superancillary functions relative to extended precision calculations carried out in C++ with the teqp library. The results of the iterative calculations with REFPROP and CoolProp are also shown.

.. note::

    You can download the script that generated the following figure here: :download:`(link to script)<Superancillaryplots/CarbonDioxide.py>`, right-click the link and then save as... or the equivalent in your browser.  You can also download this figure :download:`as a PDF<Superancillaryplots/CarbonDioxide.pdf>`.

.. image:: Superancillaryplots/CarbonDioxide.png