Natural gas having a molar analysis of 60% methane (CH4) and 40% ethane (C2H6) enters a compressor at 340 K, 6 bar and is compressed isothermally without internal irreversibilities to 20 bar. The compressor operates at steady state, and kinetic and potential energy effects are negligible. (a) Assuming ideal gas behavior, determine for the compressor the work and heat transfer, each in kJ per kmol of mixture flowing.
(b) Assuming ideal solution behavior, determine for the compressor the work and heat transfer, each in kJ per kmol of mixture flowing.
For the pure components at 340 K
20 bar Methane715.33 704.400.9763 0.3275 73493 6.9680 6 bar 20 bar6bar Ethane 46239 439.13