Question

please answer this......what are the limitations of direct energy conversion?​

Answer 1

Answer:

Direct energy conversion usually implies the elimination of the mechanical rotary machinery (turbines) used in the previous examples. Direct conversion of nuclear energy to electricity may be done in a single step (direct collection devices) or in two steps involving intermediate thermal energy: thermionics and thermoelectricity.In the direct collection devices, nuclear radiations such as β or positively charged fission particles are emitted by a nuclear cathode and collected on an anode across a gap and voltage difference. This is the most direct way of nuclear energy conversion. It is characterized by very low currents, high voltages, and very low efficiencies.