In order to utilize the low temperature waste heat resources in Jisteel pelletizing plant,the screw expansion power generation technology is adopted to use the original blow-off low temperature low pressure saturated steam for generation,and good effect is obtained.

Application of spiral pole expanding motive machine in smeltery;

After a contrastive study with the conventional working fluids, the authors propose a method of making use of the two-phase flow screw expander to replace the throttling valve.

The power characteristics of a helical screw expander during its isentropic expansion was studied in detail with the concept of expansion ratio of peak power being proposed.