Experimental Determination of the Specific Heat at Constant Pressure (Cp) of Carbon Dioxide for Pressures up to 900 bars.

A test facility operating according to the flow method is described with the aid of which the specific heat c//p of pure substances and mixtures of substances can be measured in the temperature range from 60 to 150 degree C at pressures up to 900 bars. In order to test this facility, the specific heat of carbon dioxide was measured. A comparison of the values obtained with those given in the literature and with the values calculated from the state equations generally showed agreement within the framework of the given accuracies, but greater deviations occurred in the regions of the maximum of the c//p-isotherms.