Advanced Power Plant + Gas Turbines Model Library (APP_Lib_GT)
APP_Lib_GT is a model library for building modular, equation-based performance models of thermal power generation systems—from conventional steam plants to CHP and combined cycles with gas turbines and HRSGs. It supports both design-point sizing and off-design / part-load simulation, enabling fast cycle studies, integration assessments, and realistic operational scenario analysis.
A key design philosophy of APP_Lib_GT is its fine-grained component approach. Instead of relying on a few “monolithic” blocks, the library tends toward smaller, well-defined components (e.g., individual heat-transfer sections, pressure-loss elements, mixing/splitting points, dedicated auxiliary models). This has two practical benefits:
- Flexibility without sacrificing detail: Smaller building blocks let you represent real plant layouts more faithfully—especially when you need to capture bypasses, bleed flows, staged heat recovery, recirculation, or non-standard integration points—while still keeping the model structured and readable.
- A strong compromise between accuracy and usability: You can start with a straightforward flowsheet using sensible defaults, then increase fidelity selectively where it matters (losses, temperature approach, part-load behavior, auxiliary demand) without turning the model into a one-off custom development.
In practice, this means APP_Lib_GT works well for both rapid concept screening (compare configurations and parameter sets) and engineering-grade refinement (quantify efficiency, losses, and constraints; test improvements; run sensitivities and optimization). The library includes a broad set of ready-to-connect unit models—covering turbomachinery, heat exchangers and heat recovery, combustion, piping/pressure losses, cooling, and auxiliaries—so you can focus on system decisions rather than rebuilding fundamentals.
For the exact technical scope (component list, supported working media, version info, and formal definitions), link to the specification here:
https://about.ipsego.app/embed/APP_Lib_GT