context: The efficiency of a Rankine cycle is usually limited by the working fluid. Without the pressure reaching supercritical levels for the working fluid, the temperature range the cycle can operate over is quite small; in steam turbines, turbine entry temperatures are typically 565 °C (the creep limit of stainless steel) and condenser temperatures are around 30 °C. This gives a theoretical Carnot efficiency of about 63% compared with an actual efficiency of 42% for a modern coal-fired power station. This low turbine entry temperature (compared with a gas turbine) is why the Rankine cycle is often used as a bottoming cycle in combined-cycle gas turbine power stations.[citation needed]
question: ఒక ఆవిరి టర్బైన్ (turbine) యొక్క టర్బైన్ ఎంట్రీ ఉష్ణోగ్రత (turbine entry temperature) డిగ్రీల సెల్సియస్లో (degrees Celsius) ఉంటుంది?
answers: 565 565 °C 565 °C