added freezingCO2 script

derby.log

@@ -0,0 +1,13 @@
+----------------------------------------------------------------
+Thu May 16 10:57:58 CEST 2019:
+Booting Derby (version The Apache Software Foundation - Apache Derby - 10.12.1.1 - (1704137)) instance a816c00e-016a-bfdc-b7e3-00000448ab50 
+on database directory classpath:data/neqsimthermodatabase in READ ONLY mode with class loader com.mathworks.jmi.CustomURLClassLoader@5b6813df. 
+Loaded from file:/C:/Users/esol/OneDrive%20-%20Equinor/programming/neqsimmatlab/ext/NeqSim.jar.
+java.vendor=Oracle Corporation
+java.runtime.version=1.8.0_121-b13
+user.dir=C:\Users\esol\Documents\MATLAB
+os.name=Windows 10
+os.arch=amd64
+os.version=10.0
+derby.system.home=null
+Database Class Loader started - derby.database.classpath=''

example/freezingCO2.asv

@@ -0,0 +1,10 @@
+system1 = neqsim.thermo.system.SystemSrkEos(250.0, 20.0); %  Kelvin / bara
+system1.addComponent('methane', 90.0); 
+system1.addComponent('CO2', 10.0);
+system1.setMixingRule(2);
+system1.setSolidPhaseCheck('CO2');
+freezt(system1);
+system1
+
+disp(['freezing temperature ',num2str(system1.getTemperature()-273.15)])
+

example/freezingCO2.m

@@ -0,0 +1,8 @@
+system1 = thermo('srk', 250.0, 20.0); %  EoS / Temperature [Kelvin] / Pressure [bara]
+system1.addComponent('methane', 90.0); 
+system1.addComponent('CO2', 10.0);
+system1.setMixingRule('classic');
+system1.setSolidPhaseCheck('CO2');
+freezt(system1);
+system1
+disp(['freezing temperature ',num2str(system1.getTemperature()-273.15)])

example/testUMRPhaseEnvelope.m

@@ -1,5 +1,5 @@
 fluid1 = thermo('UMR-PRU-EoS',273.15+55, 25.0);
-fluid1.addComponent('methane', 6.0);
+fluid1.addComponent('ethane', 26.0);
 fluid1.addComponent('n-hexane', 44.5);
 fluid1.createDatabase(1);
 fluid1.setMixingRule('UNIFAC_UMRPRU');