Let me try ask it this way. How efficient is current power generation thermodynamic cycles in space? Is it even used? My info is that most spacecraft use PV solar panels, is the heat turned to energy via a standard Rankine cycle?
If engineers developed a thermodynamic heat recovery cycle that's 92% efficient at converting heat to energy / electricity, would it therefore be better than current tech and have applications in space exploration and for example the international space station?