During a fission each time an atom divides half the energy released more energy released double the energy is released

The co-efficient of performance of a refrigerator is the ratio of heat removed from the cold reservoir to the work done: COP = Q c W = Q c Q h − Q c = Q c / Q h 1 − Q c / Q h COP=QcW=QcQh−Qc=Qc/Qh1−Qc/Qh So W = Qc/COP. Since it is a Carnot cycle: Qc/Qh = Tc/Th To find Qh use W = Qh-Qc

Reference https://www.physicsforums.com/threads/carnot-refrigerator-coefficient-of-performance.145848/

Explanation: