Phase state problem of dioxide
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Let’s discuss, what is the phase state of carbon dioxide at a pressure of 11MPa and a temperature of 130 degrees?
The critical temperature of carbon dioxide is about 31.2°C, and the critical pressure is 7.38MPa. That is to say, if the temperature is higher than 31.2°C, no matter how high the pressure is, it will not liquefy. ； So the conditions you gave must be gas.
I had the same understanding as you. I made a carbon dioxide reservoir in the previous stage. The customer said it was liquid. I checked online and found a state called supercritical state. When the pressure and temperature of the medium exceed the critical value at the same time, it is a supercritical state.
Indeed, the temperature and pressure here exceed the critical value, so it should be a supercritical fluid. When an object is in a supercritical state, the properties of the gas and liquid phases are so similar that they cannot be clearly distinguished, so they are called "supercritical fluids." Therefore, at this moment, it cannot be absolutely determined whether it is a gas or a liquid. It can only be called a supercritical fluid.