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ALLSHIFT/docs/03-energy-management/ucsd-equipment-manual.md
pepe 72dd781dbc Organize documentation into docs/ and superseded/ 
Audit every document in the repository, convert the non-markdown ones into
markdown reports, and split current documentation from outdated material.

docs/ — 31 markdown documents in seven numbered sections. Twenty are new
reports generated from .docx / .pdf / .xlsx / .mlx / .m sources that were
previously unreadable in the browser and undiffable in git. Each report
carries a provenance block (source path, format, MD5) and links back to its
original; all 13 recorded checksums verify against the files on disk.
Machine-extraction losses (PDF table column interleaving, Word OMML
equations, embedded figures) are called out explicitly rather than silently
smoothed over.

superseded/ — outdated material with a documented reason per entry:
two byte-identical ClickUp re-exports, an older revision of the BIDMC/UCSD
energy-flow doc (the retained copy adds the SoC Violation Rate KPI), a
duplicate of Shift input data.docx, the May 2026 simulation plan, the
root PV+Battery.md now covered by a fuller report, GitHub's stock
demo-repository template, and a zero-byte placeholder. Its README also
records what was deliberately NOT retired and why — the "Old Frameworks"
and "Old Simulations" folders hold unique Simulink revisions, and
"Big Ugly Folder" holds the only copy of framework revision 1.3.

Findings worth flagging, all documented in the reports:
- Simulink lineage recovered from each .slx's internal coreProperties.xml
  revision counter. The current model is
  Current Framework/Bobert0206_Initial_Simulation_Framework.slx (rev 2.7);
  the top-level copy is rev 1.3, five revisions behind.
- Simulations/Constants.m is a truncated byte-prefix of the Current
  Framework copy, silently missing H2_leak, H2_cap and E_H2_vol_h.
- The PEM electrolyser and fuel cell are unmodified MathWorks Simscape
  examples still at vendor defaults; the "10x bigger" sizing TODO recorded
  in Constants.m was never carried out.
- controller-claude.m does not compile — undefined P_Electro_max, outputs
  unassigned on several paths.
- The specification set uses two incompatible variable naming conventions
  and disagrees on action-space size (5 vs 16).
- MA_hourly_load.csv (13.7 MB) is the same 35,040 rows as 89993-0.parquet
  (2.4 MB).
- Clinical data is the MIMIC-IV *demo* (ODbL, 100 patients), not full
  MIMIC-IV — redistributable, but the licence and citation are unrecorded.

Housekeeping: untrack 21 Simulink build artefacts (slprj/, *.slxc) and add
ignore rules for them. Root README rewritten around the new layout.

Recruitment notes naming individual candidates are excluded from version
control via .gitignore rather than committed; the generic question template
is kept in docs/07-team-and-operations/.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-07-25 21:20:33 -07:00

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# UCSD Microgrid Equipment Manual
> **Markdown report of a non-markdown source document.**
>
> | | |
> |---|---|
> | **Source** | `Shift Matlab Drive/Shift Matlab Drive/Energy_Managment/UCSDEquipmentManual.docx` |
> | **Format** | Microsoft Word (.docx) |
> | **MD5** | `6d5a080fc2b3adfa49a8cc9469c458ac` |
> | **Owner** | Energy Management cluster |
> | **Status** | Current |
> | **Report generated** | 2026-07-25 |
## What this document is
Equipment specifications for the **UC San Diego** campus microgrid — the second SHIFT case
study alongside [BIDMC](bidmc-ucsd-energy-flow-and-balances.md). Covers the fuel cell, battery
system, combined heat and power (CHP) plant, and the planned electrolyser.
Every parameter carries an **AI RL tag** marking how it is expected to enter the
reinforcement-learning formulation:
| Tag | Meaning |
|---|---|
| **S** | State variable — the agent observes it |
| **A** | Action variable — the agent controls it |
| **R** | Reward component — it scores the agent |
This tagging is what makes the document more than a datasheet: it is the Energy Management
cluster's proposal for how physical plant maps onto the
[RL specification](../02-specifications/rl-state-variables.md).
## Fuel cell
**Equipment:** DFC3000 molten carbonate fuel cell, manufactured by FuelCell Energy.
| Parameter | Value | Units | AI RL |
|---|---|---|:---:|
| Rating | 2800 | kW | A |
| Standard output AC voltage | 13800 | V | S |
| Standard frequency | 60 | Hz | S |
| Natural gas consumption | 364 | Scfm (standard cubic feet/min) | A/S |
| Heat rate | 7260 | Btu/kWh | R |
| Initial operation LHV | 47 ± 2 | % | R |
| Water consumption average | 9 | gpm | S |
| Exhaust temperature | 371 ± 10 | °C | S |
| Exhaust flow | 16601 | kg/h | S |
| NOx emissions | 4.54 | g/MWh | R |
| SOx emissions | 0.05 | g/MWh | R |
| PM10 emissions | 0.009 | g/MWh | R |
| CO₂ emissions | 444.52 | kg/MWh | R |
| CO₂ emissions with waste heat recovery | 235 – 308 | kg/MWh | R |
**Applications**
- Converts wastewater-treatment methane to electricity
- Continues operation during outages, critical for the hospital
- Performs permanent load shifting: during off-peak hours when electricity is cheapest, the
fuel cell pumps power into the grid to charge the batteries
> [!IMPORTANT]
> This is a **molten carbonate** fuel cell running on **natural gas** — fundamentally different
> from the **PEM hydrogen** fuel cell SHIFT models in
> [its Simulink work](../04-simulations/pem-electrolyser-and-fuel-cell-models.md) and specs at
> 100 kW in the [Simulator I/O Interface](../02-specifications/simulator-io-interface.md#12-fuel-cell).
> UCSD's unit is 28× larger and emits 444.52 kg CO₂/MWh because it burns methane. It is a
> reference for *microgrid operation at scale*, not a model of SHIFT's intended hydrogen chain.
## Battery system
UCSD uses a **2.5 MW / 5 MWh** battery from BYD; the exact model is not published. The BYD
standard 3U battery (U3A1-50E-A) is taken as a reference:
| Parameter | Value | Units | AI RL |
|---|---|---|:---:|
| Nominal voltage | 51.2 | V | S |
| Energy efficiency | > 97 | % | S/R |
| Working voltage | 44.8 – 57.6 | V | S |
| Battery cycle life | 6000 | — | R |
| Operating temperature | 0 – 55 | °C | S |
| Storage temperature | −20 – 55 | °C | S |
| State of charge | 0 – 100 | % | S |
| Nominal energy | 2.56 | kWh per module | S |
| Total system energy | 5 | MWh | S |
**Applications**
- Increases grid reliability by reducing disturbances that could affect hospital operations
- Discharges on peak hours to reduce demand charges
## Combined heat and power (CHP)
The microgrid uses two gas turbines (Solar Turbines Titan 130) and one steam bottoming-cycle
turbine (Dresser-Rand).
| Property | Value |
|---|---|
| Total CHP electrical capacity | **30 MW** (2 × 13.5 MW gas + 3 MW steam) |
| Campus electricity share | 72% of annual campus electricity needs |
| Heating supply | 95% of campus heating needs |
| Cooling needs | 95% of campus cooling needs |
| CHP total efficiency | 66% |
| CO₂ savings | 82,500 tonnes CO₂ per year |
### Solar Turbines (Titan 130)
| Parameter | Value | Units | AI RL |
|---|---|---|:---:|
| Power | 16,530 | kWe | S |
| Heat rate | 10,160 | kJ/kW·hr | S |
| Exhaust flow | 202,510 | kg/hr | S |
| Exhaust temperature | 490 | °C | S |
| Energy efficiency | 35.4 | % | R |
| Simple-cycle thermal efficiency | 34 | % | R |
| Primary fuel type | Natural gas | — | A |
| Secondary fuel type | Light distillate | — | A |
> The datasheet figure of **16,530 kWe** per turbine does not match the summary line's
> "2 × 13.5 MW". The summary describes UCSD's installed/derated operating capacity; 16.5 MWe is
> the Titan 130's nameplate rating. Both numbers are in the source document.
### Steam bottoming-cycle turbine
Electric capacity **3 MW**. The steam source is the exhaust of the Solar Titan 130 gas turbine.
It produces domestic hot water for campus buildings.
**Applications**
- High-temperature exhaust gas boils water into high-pressure steam, which powers the steam
turbine and provides hot water and heating for the campus
- The captured thermal energy also drives three steam-turbine absorption chillers, producing
chilled water to fill the Thermal Energy Storage tank
- The turbines are also the primary electricity supply for the campus
## Electrolyser (planned, not installed)
UCSD does **not** currently operate an electrolyser. One is planned under the **SDG&E UCSD
Hydrogen Blending Pilot Project**: if approved, the electrolyser would be placed on campus to
produce hydrogen for the campus gas distribution network, with the aim of injecting **up to 20%
hydrogen into the natural gas pipeline**.
The exact model and brand are not yet known, but it will be a **Proton Exchange Membrane (PEM)**
electrolyser. Representative PEM specifications:
| Parameter | Value | Units | AI RL |
|---|---|---|:---:|
| Temperature | 50 – 80 | °C | S |
| Efficiency | 50 – 83 | % | R |
| Consumption | 4.3 – 5.1 | kWh/Nm³ | A |
| Pressure | 30 – 40 | Bar | S |
| Current density | 1 – 2 | A | S |
| Voltage range | 1.4 – 2.5 | V | S |
> The current density unit is given as **A** in the source; current *density* is conventionally
> A/cm². Likely a units slip in the original.
## Sources
| Topic | Link |
|---|---|
| Fuel cell specifications | https://go.fuelcellenergy.com/hubfs/3000-fuel-cell-power-plant.pdf |
| Battery reference specifications | https://sunsol.pl/wp-content/uploads/2021/11/Akumulatory-BYD-ENERGY-STORAGE-PRODUCTS.pdf |
| CHP general information | https://chptap.ornl.gov/profile/356/UCSDMicrogrid-Project_Profile.pdf |
| CHP general information | https://microgrid-symposiums.org/microgrid-examples-and-demonstrations/uc-san-diego-microgrid/ |
| Solar turbines | https://www.solarturbines.com/en_US/products/power-generation-packages/titan-130.html |
| Solar turbines | https://www.industrialmarinepower.com/solar-titan-130/ |
| Electrolyser | https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2024.1358333/full |
| Electrolyser | https://www.sempra.com/sdge-hydrogen-pilot-project-aims-advance-cas-clean-energy-goals |
## Related
- [BIDMC/UCSD Energy Flow and Balances](bidmc-ucsd-energy-flow-and-balances.md) — dispatch model for the other case study
- [RL State Variables](../02-specifications/rl-state-variables.md) — where the S-tagged parameters land
- [RL Reward Function](../02-specifications/rl-reward-function.md) — where the R-tagged parameters land
- [BIDMC Digital Twin Readiness Checklist](bidmc-digital-twin-readiness-checklist.md) — the readiness gate these specs feed
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