Supercritical carbon dioxide blend
Homogeneous mixture of CO2 / From Wikipedia, the free encyclopedia
Supercritical carbon dioxide blend (sCO2 blend) is an homogeneous mixture of CO2 with one or more fluids (dopant fluid) where it is held at or above its critical temperature and critical pressure.[1]
Carbon dioxide behaves as a supercritical fluid above its critical temperature (304.13 K, 31.0 °C, 87.8 °F) and critical pressure (7.3773 MPa, 72.8 atm, 1,070 psi, 73.8 bar), expanding to fill its container like a gas but with a density like that of a liquid.[2]
By combining CO2 with other fluids, the critical temperature and critical pressure of the mixture can be modified. The s-CO2 blend is usually designed to increase the mixture supercritical temperature to employ the s-CO2 in power cycles, obtaining increased energy conversion efficiency.[3]