Повышение эффективности газотурбинных установок, работающих по замкнутому циклу

Abstract

Consideration is given to the main stages of "dieselization" of gas turbine power plants (GTP) given in the patent literature. The "dieselization" is based on the principle that the pressure developed by the compressor is independent of the gas flow. Some technological and structural improvements in the GTP allow us to increase the gas pressure supplied to the heat source to 30 MPa. The latter circumstance will allow us to increase the GTP efficiency to 70 %. However, the restrictions related to the material strength properties prevent us from using a portion of available temperature difference to produce electric power. This situation can be improved by using carbon materials, in particular fullerenes for the building of turbines and compressors. The tests showed that the microcable made of fullerene nanotubes that have a human hair thickness can carry tens of tons cargo. At high temperatures the strength properties of carbon materials change insignificantly. In this report the analysis of the closed cycle whose actuating medium is helium and argon has been given. The efficiency of the developed high-temperature cycle allows us to approach the efficiency of Carnot cycle.