How to calculate heat capacity of supercritical CO2

AI Thread Summary
To calculate the heat required to raise the temperature of carbon dioxide from -40°C to 50°C, consider the phase change at the critical point of approximately 31°C and 73 bar, where liquid CO2 transitions to a supercritical state. The total heat calculation involves determining the heat needed for both the temperature increase and the phase change. Utilizing resources like the NIST database and Engineering Equations Solver (EES) can provide essential thermodynamic properties for accurate calculations. These tools are recommended for detailed thermo analysis of CO2. Properly accounting for these factors will yield the total heat required for the process.
ceramic57
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Hello,
1. How can I calculate the heat required to raise the temperature of Carbon dioxide. It is at -40C and then it is to be heated to 50 C... The operating Pressure is above critical, so when it crosses the critical temperature point, the liquid CO2 would change into super critical state. (I hope I am right till now)... So how do I calculate the total heat required for this process? The critical point for CO2 is almost 31 C and 73 bar.
 
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Hi ceramic. Welcome to the board. If you're doing a lot of thermo analysis and need properties of CO2, I'd suggest purchasing the NIST http://www.nist.gov/srd/nist23.cfm" .
 
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you can use Engineering Equations Solver (EES) for properties of different substances
 

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