Data for: Dynamic modelling of a novel hybrid compressed air–hydropneumatic energy storage system with TES-assisted residual air recovery

Published: 6 September 2026| Version 1 | DOI: 10.17632/5gspxzbpj3.1
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Description

These machine-readable supplementary data support the manuscript “Dynamic modelling of a novel hybrid compressed air–hydropneumatic energy storage system with TES-assisted residual air recovery”. The Microsoft Excel workbook contains 40 worksheets (00–39) covering the design basis; selected converged Cycle 12; electrical and thermal energy accounting; repeated Cycles 2–12 and convergence gates; event-resolved hydraulic discharge; hydrostatic pump-back; TES/PCU readiness and inventory closure; compressor–HE1 and HE2 engineering data; HP thermal assistance and air–water heat-transfer bounds; numerical and thermophysical-property verification; normalized external-reference trajectories for Figure 5; vessel and practical-feasibility screening; literature context; 30 fully coupled sensitivity cases (27 converged/reportable cases and three feasibility boundaries); a 40-case local pump-back sweep; figure-source mapping; omitted-auxiliary electrical bounds; PCU robustness; time-step refinement; independent TES–HE2–expander pathway reconstruction; external turbine-performance context; separator-model scope; and modular vessel-scale context. Full-precision values are retained. Cycle 12 has a total electrical input of 4.453327674947855 MWh, net electrical output of 2.3370253672540824 MWh, and net round-trip efficiency of 52.47818121269164%. The workbook contains no macros or external data connections. It is intended for numerical audit, reconstruction of reported tables and figures, and reuse subject to the stated scope and provenance notes.

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Steps to reproduce

1. Download CAES_Supplementary_Data_Majid_Khazali.xlsx and open it in Microsoft Excel or compatible spreadsheet software with automatic calculation enabled. No macros or external data connections are required. 2. Read 00_Readme for the numerical basis, claim boundaries and worksheet map, then consult 31_Data_Scope for publication-facing coverage. 3. Use 02_Design_Basis for model inputs and definitions. The selected Cycle-12 results and full-precision energy quantities are in 03_Baseline_C12 and 04_Energy_Accounting_C12. Recalculate net round-trip efficiency as 100 × E_out,net / E_in,total. 4. Audit repeated-cycle state carryover and convergence using 05_Cycles_C2_C12 and 06_Convergence_Gates. Cycles 10–12 are the first three consecutive full-state convergence passes; Cycle 12 is the selected representative cycle. 5. Inspect the event-resolved discharge data in 07_D_Event_Resolved_Summary and 08_D_Event_Resolved_Profile_C12; pump-back results in sheets 09–10; and TES/PCU readiness and closure in sheets 11–12. 6. Component and model-supporting data are in sheets 13–18. Numerical and property-package verification are in sheets 19–20 and 34–36. Figure-5 reference coordinates, model coordinates and comparison metrics are in sheets 21–23. 7. Practical-feasibility and literature-context data are in sheets 24–26 and 38–39. The 30-case fully coupled sensitivity dataset is in sheets 27–28; the 40-case local pump-back sweep is in sheet 29; and the complete reportable sensitivity-figure data are in sheet 37. Do not calculate or plot steady-state ΔRTE values for the three boundary cases q44, c97p60 and c97p70. 8. Use 30_Figure_Source_Index to identify the worksheet source for each manuscript or Supplementary figure. Preserve the units, case identifiers, publication cycle labels and scope notes when reusing data. 9. This dataset supports numerical audit and reconstruction of reported tables and figures. It does not include the complete simulation source code; an independent rerun of the full dynamic model therefore requires a separate implementation of the equations, controls and property routines described in the manuscript and Supplementary Material.

Categories

Energy Engineering, Mechanical Engineering

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