Cryodynamics has recently developed a two phase, "Exducer" expander turbine, which is designed to operate in expansion conditions where the liquid will begin partially vaporizing within the turbine. This new design incorporates the same basic technology as our single phase, liquid expander, with the generator submerged, and incorporating our TEM, but at the discharge end, a jet Exducer is attached to the shaft.

This Exducer is designed to allow a vapor content of up to 100 percent at the discharge end, thereby allowing the installation of the machine into systems with liquid expansion into the vapor phase. The two phase Exducer expander can be supplied with a variable speed or fixed speed generator and operated in the same fashion as the liquid or single phase expander. The design and materials of the two phase expander are also basically the same as the single phase expander, except the generator is located at the bottom of the machine, with the hydraulics section (runners and Exducer) located at the top. This unique design allows the vapor to naturally rise as expansion takes place within the machine.