A thermal vapor recompressor (TVR) is an ejector that recycles low-pressure waste vapor using high-pressure steam. The TVR ejects high-pressure motive steam at high velocity through a nozzle, inducing low-pressure vapor. At this point, the two vapor streams are uniformly mixed in the suction chamber, and the low-pressure vapor is accelerated through the energy of the motive steam. Suction vapor is induced by momentum exchange between the motive fluid and suction fluid, with uniform mixing occurring at the narrowest part of the diffuser. Finally, the velocity energy is reconverted to pressure energy in the diffuser's expansion section. As a result, it is discharged at a pressure between high and low pressure.