Detachable hydrogen pods would also contain plane engines

The video discusses a new concept for hydrogen-powered flight, introducing independent hydrogen fuel systems in pods that can be attached to the wings of turboprop airplanes. This innovation aims to increase cargo and passenger space by removing fuel tanks from the fuselage and enhancing safety by relocating flammable hydrogen fuel to the wings. Each wing will have three pods, each containing a liquid hydrogen tank, cooling system, fuel cell power electronics, and electric motors. The pods can be easily replaced, eliminating the need for complex refueling systems.

Explain how the new design allows for more space in the airplane.

What is the purpose of the cooling system in the hydrogen tanks?