An open system operates at steady state and delivers energy by heat transfer at 300°C, while receiving a flow of saturated water vapor at 210°C and discharging a flow of condensate at 20°C and 0.1 Pa. Additionally, the system has heat transfer at 20°C to the surroundings. Calculate the maximum theoretical magnitude of the heat energy per mass delivered at 300°C. Present your answer in kJ/kg using 5 significant figures.

An open system operates at steady state and delivers energy by heat transfer at 300°C, while receiving a flow of saturated water vapor at 210°C and discharging a flow of condensate at 20°C and 0.1 Pa. Additionally, the system has heat transfer at 20°C to the surroundings. Calculate the maximum theoretical magnitude of the heat energy per mass delivered at 300°C. Present your answer in kJ/kg using 5 significant figures.