| Popis: |
The subject of consideration in the article are methods of complicating the cycles of vacuum micro-gas turbine plants (VMGTP) in order to further increase their efficiency. The direction of deeper utilization of the heat of exhaust gases of VMGTP was chosen, transforming it into work in the organic Rankine cycle (ORC) plant, as well as the use of local climatic resources of cold. It has been established that the use of an additional steam turbine as part of the ORC unit of the combined VMGTP allows to increase its efficiency from October to March by 1... 5%, depending on the configuration of the basic VMGTP, which ensures an increase in the average annual efficiency by 0.5... 2%. It is shown that the ORC plant on R-134a does not allow full use of the temperature potential of the VMGTP gases based on a gas turbine engine (GTE) of a simple cycle (SC), since the decomposition temperature of the working fluid is lower than the temperature of the gases of the base VMGTP, therefore, the efficiency of combined VMGTP based on GTE SC with the use of R-134a is lower than similar ones with the use of ammonia by 5... 6%. |
