In simple combined brayton-rankine cycle. The outlet enthalpy-mass flow rate-temperature are known which is going to enter heat exchanger. Heat exchanger effectiveness is 0.7. What information do i need to work on rankine cycle. For steam(rankine side) mass flow rate and outlet enthalpy of the heat exchanger is known ,do i also find out air(brayton side) outlet enthalpy in the heat exchanger? For example: Inlet properties of air T=1000K h=1000kj/kg mass flow= a kg/s Outlet properties of air T=x K h=y kj/kg same mass. Outlet properties of steam T=q K h=w kj/kg Inlet properties of steam T=e K h=r kj/kg How will i use the efectiveness information and where? Answer: Would you provide the equations in the answer For example like this Q=(h_inletair-h_outletair) . massflow_air WHICH IS Q= 1000.a kw Qxeffectiveness= (houtletsteam-hinletsteam)mass_steam x effectiveness