Steam Screw Expander Generator
Working Principle:
Working Principle:
Steam screw expander converts the heat into power using “Thermodynamics" working principle. Steam ( saturated, superheated or two phases ) act as media for expander. While high pressure steam enters the expander, it pushes and turns the rotor. The rotor will drive the generator to generate power, and then reduce the temperature and pressure of steam.
Schematic drawing
- Steam enters expander at point 1, high pressure steam expand to push the rotor to drive the generator.
- Steam reduces the temperature and pressure to point 2.
The exhaust low pressure steam can still be REUSED in the following process:
- Low pressure STEAM screw expander generator
- ORC screw expander ORC power plant
- User can use this steam in their manufacturing process
The steam screw expander is open-loop type. During the periods when steam enters to exhaust, the quantity of the steam will be maintained and the same quantity can be used for the next step in the process line.
Energy which lost of PRV in the past can be converted to power by steam screw expander now. There are two types: Back pressure and Condensing type can be chosen, depending on following process heat demands.