COMBINED-CYCLE PLANTS WITH ORGANIC WORKING FLUIDS  FOR UNIFIED GAS SUPPLY SYSTEM OF RUSSIA

The unified gas supply system of Russia is the largest gas-transport system in the world. It covers 161,7 kilometers of the gas-main. However, there is a problem to supply gas-transfer compression stations with electric power. The paper considers the possibility of applying the organic Rankine cycle in the combined-cycle plant for the electric power supply of units involved in the Russian unified gas supply system. As the example the authors take the compression station «Severnaya». The paper analyzes the influence of ambient temperature and working fluid’s type on the performance of the combined-cycle plant and determines main parameters of the combined-cycle plant which allow reaching the objective steam turbine’s net power.