DOI: 10.36347/sjet

Pages: 383-389

Natural gas has a high pressure before consumption in industries and cities. This pressure is reduced using relief valves in urban gas pressure reducing stations. Pressure drop results in great energy loss and accordingly stations are able to generate power. If we could install an expansion turbine parallel with the station and to move an axis, we could gain electricity from axial work. In this paper, first urban gas pressure reducing stations are modelled using HYSYS Software. After installation of an expansion turbine in the direction of station, productivity of the station is investigated, followed by examination of temperature, pressure, and productivity in the station and their results.