Can anybody explain why liquid CO2 has such a temperature dependant heat capacity, especially at lower pressure (~1,000 psi - see attached graph)?
From the PVT diagram I don't see any phase changes at the peak heat capacities.
I am planning a job where we will be injection liquid CO2 into an oil...
I will be pumping 3 different fluids, portable water, 1-10% Sodium Chloride brine and 1% Sodium Carbonate Alkaline (pH ~ 11) fluids. What material is best to use for the pump Aluminum-Bronze or 316 Stainless Steel?
My main problem is iron (Fe2+ and Fe3+), basically rust is getting into my fluid...
