The accurate modelling and investigating effects of various parameters of the reciprocating
compressors are important subjects. In this work, based on first law of thermodynamics,
conversation of mass and real and ideal gas assumptions, a theoretical analysis has been
constructed to simulate natural gas reciprocating compressors. For computing the thermodynamic
properties of natural gas based on real gas model, the AGA8 equation of state
has been used. Numerical results validated with previous measured values and showed a
good agreement. The effects of important parameters such as: angular speed, clearance
and pressure ratio have been studied on the performance of the compressors. The results
reveal the in-control volume temperature for ideal gas is more than real gas model but the
mass flow rate and work for real gas is higher than ideal gas model. On the other hand, the
indicated work that required for compression is greater for ideal gas model.
کلید واژگان :
Reciprocating compressor Natural gas Thermodynamic modeling AGA8 equation of state
