state enterprise gas turbine reserch & production complex Main about enterprise product applications contacts news product industrial application units EGU EXPANDER – GENERATOR SETS OF GAS DISTRIBUTION NETWORKS Since 2002 GTRPC “Zorya”-“Mashproekt” has been engaged in designing and manufacturing of expander-generator sets (EGS) for gas-reducing stations (GRS) and gas control points (GCP) of medium and high-pressure gas pipelines. The sets generate environmentally clean electrical power (without firing). Use of turbo-expanders for generators drive gives the opportunity to perform partial recovery of energy, spent for gas compression at gas pumping stations. Main characteristics Expander-generator set DGA-2500SD DGA-2500SD1 DGA-2500VD DGA-3000SD   Power at generator terminals, kW 2 200 2 500 2 500 3 400   Gas flow, Nm3/h 50 000 50 000 79 000 50 000   Inlet gas pressure, MPa (absolute) 2,3 2,3 4,0 2,5   Outlet gas pressure, MPa (absolute) 0,25 0,19 1,02 0,22   Inlet gas temperature, оС +130 +180 +90 +180   Outlet gas temperature, оС +15 +60 +10 +25   Overall dimensions, L х H х W, m 12,0 х 2,9 х 3,2   Weight, including generator and equipment, kg 31 000 - 33 000   Total life, h 120 000   Gearbox output shaft speed, rpm 3 000 Scope of supply and services Main advantages EGS for industriel projects