ORC (Organic Rankine Cycle for power Generation) is a key technology in the field of low temperature waste heat utilization. It USES organic fluid as working medium to transform waste heat discharged from the upper energy system into high-grade energy, so as to improve the overall utilization of energy．

Organic working medium of the liquid by the circulation into heat exchangers, absorbing heat waste heat generated after a certain pressure and temperature of organic working medium steam, steam drive screw expander, doing work output of kinetic energy turns a generator to achieve power, steam exhaust discharge of low-pressure organic expander working medium entering the condenser heat release, condenses into liquid organic substance, again through the circulating pump back into the heat exchanger, so cycle to achieve the transformation of heat energy and kinetic energy.