Calculation and Evaluation of the Efficiency of Installations for the Utilization of Secondary Energy Resources on the Basis of Turbo Expander Units

Technologies for energy saving and use of renewable energy sources are in great demand today. Application of turboexpander units allows to cover a wide range of technological needs, including the use of secondary energy resources. In the course of the work the design features of turboexpander units used for utilization of excess pressure of natural gas at gas distribution stations during pressure reduction in the gas pipeline, as well as units for utilization of low-potential heat of flue gases and other gaseous heat carriers are considered. The potentially more efficient scheme of the flue gas utilization installation, based on the use of energy of the gas flow through the gas utilization non-compressor turbine with a parallel heat recovery is proposed. On the basis of technical and economic calculations of the presented installations and a comparison of their design and technological features, the effectiveness of their use has been evaluated. On the basis of the results obtained the most rational designs of utilization plants, based on the use of turbo expander units were selected.