Combined-cycle gas turbine

T-s diagram for the toluene combined-cycle gas turbine cycle}

The new FPROPS code has been used to develop a number of energy system models by John Pye for a paper to be presented at SolarPACES 2010. These models can be found in our source-code repository and will be included in the next release of ASCEND. For now, the key files are:

• models/johnpye/fprops/rankine_fprops.a4c - Rankine cycle models for CO2, toluene, water and ammonia.
• models/johnpye/fprops/rankine_regen.a4c - regenerative Rankine cycle models for toluene, water and ammonia.
• models/johnpye/brayton.a4c - air Brayton cycle models, including regenerative Brayton cycle.
• models/johnpye/combinedcycle_fprops.a4c - Combined-cycle models, with open air Brayton cycles coupled to toluene, water, and ammonia Rankine cycles.

Note that the plotting for these models is done using the admittedly-buggy ExtPy extension for ASCEND.