ORC

ORC

[Organic Ranking Cycle]

Organic Ranking Cycle; Diagram showing the basic layout of a Ranking cycle transform heat, in turbogenerators, to electric energy; Fluid is pumped to high pressure going from state 1 to 2. Heat is added in the boiler by the burning of fuel (although heat can be added by any method) boiling the fluid to state 3. The vapour expands through the turbine dropping significantly in pressure and temperature to state 4. Finally the vapour is condensed back to a liquid and fed back in the pump. Mechanical energy, rotation of turbine rotor, is transformed to electrical energy into Electrical Generator.

Refrigerant; But water needs high pressure and temperature for emitting the energy, optimized refrigerant can be sure that it touches the boiling point under the lower temperature and pressure than water needs. So, optimized refrigerant helps the energy with preventing leak.

http://commons.wikimedia.org/wiki/File:Rankine_cycle_layout_PL_w_gen.png?uselang=ko