Analytical calculation of adiabatic processes in real gases

All-Russian Conference with the School for Young Scientists “Thermophysics and Physical Hydrodynamics –2016”

Amarskaja, I.B.^1 ; Belousov, V.S.^1 ; Filippov, P.S.^1

Ural Federal University, 19 Mira street, Ekaterinburg, Russia^1

关键词: Adiabatic process;    Analytical calculation;    Compression process;    Expansion process;    Gas turbine cycles;    Reference data;    Specific heat ratio;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/754/11/112003/pdf
DOI  :  10.1088/1742-6596/754/11/112003

来源: IOP

【 摘 要 】

The impact of gases nonideality in the compression and expansion processes on the specific heat ratio and the heat capacity is analyzed. The specific heat ratio variation leads to temperature variation during compression in the compressor and expansion in the turbine and, consequently, the gas turbine cycle efficiency factor variation. It is also essential to consider the gases nonideality in the compression and expansion processes in the compression processes in compressor. Generally it is assumed during calculations that the heat capacities depend only on temperature, in this case the reference data presented by various authors differs markedly. In the real processes the heat capacity and the specific heat ratio depend on temperature and within the particular temperatures and pressures range depend on pressure. Consequently, the operating fluid nonideality in the gas turbine cycle should be considered.