To raise low-pressure steam to higher pressures for reuse in various applications, a thermo - compressor is employed. By retaining the energy in low-pressure steam and boosting its pressure by blending in high-pressure steam, this maximizes energy efficiency. The retained energy is transformed from pressure to dynamic energy in the form of velocity and back again. This implies that an increase in velocity will lead to a decrease in pressure, or vice versa, that a decrease in velocity will lead to an increase in pressure.. Motive steam, which is high-pressure steam or lower pressure that is let out of the nozzle into the mixing chamber, produces a high-velocity jet that is very low in pressure. Since the suction steam that is to be boosted is at a lower pressure than this jet, some of that suction steam is accelerated (sucked up) and mixed with the jet as it passes through the mixing chamber. In the expansion chamber, this combination is then gradually slowed down, reversing the velocity into pressure and producing medium-pressure steam, also known as discharge steam.