Supercritical & Ultra-supercritical technology
Similar term(s): SC and USC power plants.
Conventional coal-fired power plants, which make water boil to generate steam
that activates a turbine, have efficiency of about 32%.
Supercritical (SC) and ultra-supercritical (USC) power plants operate at
temperatures and pressures above the critical point of water, i.e. above the
temperature and pressure at which the liquid and gas phases of water coexist in
equilibrium, at which point there is no difference between water gas and liquid
water. This results in higher efficiencies – above 45%.
Supercritical (SC) and ultra -supercritical (USC) power plants require less
coal per megawatt-hour, leading to lower emissions (including carbon dioxide and
mercury), higher efficiency and lower fuel costs per megawatt.
Source: GreenFacts, based on
Indo German Energy Programme
Carbon dioxide (CO2) - Supercritical carbon dioxide
Español: Tecnología supercrítica y ultra supercrítica
Français: Technologie supercritique & ultra-supercritique
Nederlands: Ultra-superkritische technologie