Question

The efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle because

• A. the enthalpy of main steam is higher for superheat cycle
• B. the mean temperature of heat addition is higher for superheat cycle
• C. the temperature of steam in the condenser is high
• D. the quality of steam in the condenser is low

Answer 1

The correct option is B the mean temperature of heat addition is higher for superheat cycle

Due to the superheating, the mean temperature of heat addition increases and due to this, the efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle.