junte/Model
1
0
Fork 0
mirror of https://github.com/Hestia-Homes/Model.git synced 2026-06-08 11:17:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
Model/packages
History
Khalim Conn-Kowlessar d004dc3f5c slice S-B13: skip cylinder + primary HW losses for instantaneous systems 
Water heating codes 907 (single-point gas) and 909 (electric instantaneous)
describe no-cylinder, point-of-use systems with no primary circuit.
The predicted_hot_water_kwh model was adding 366 kWh cylinder-storage
loss + 245 kWh primary-pipework loss on top of useful demand for these
certs — over-counting HW by 600+ kWh.

Discovered hand-tracing cert 2903-8339 (11m² Top-floor flat studio,
water_heating_code=909, actual SAP 75, predicted 55).

100-cert parity probe:
  MAE 4.53 → 4.48   (-0.05)
  RMSE 5.96 → 5.81
  bias -0.57 → -0.52

Smaller MAE delta than S-B12 because instantaneous-HW certs are a
smaller subset, but the affected dwellings are exactly the worst-
residual tail.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-18 16:02:51 +00:00
..
domain slice S-B13: skip cylinder + primary HW losses for instantaneous systems 2026-05-18 16:02:51 +00:00
fetchers added potential file scaffolding: 2026-05-15 10:56:53 +00:00
repos added potential file scaffolding: 2026-05-15 10:56:53 +00:00
utils added potential file scaffolding: 2026-05-15 10:56:53 +00:00
README.md added potential file scaffolding: 2026-05-15 10:56:53 +00:00

README.md

Shared packages

Workspace packages consumed by services/*. Each package is its own Python distribution with its own pyproject.toml; services import via the workspace dependency mechanism ({ workspace = true }).

Package Purpose
domain/ Shared domain types — Property, BaselinePerformance, Plan, Scenario, EpcPropertyData, etc. No persistence, no IO, no business logic.
repos/ Persistence layer — one repo per aggregate. Owns the SQL. Depends on domain.
fetchers/ External API clients (gov EPC, Ofgem, Google Solar, etc.). Depend on domain for response shapes.
utils/ Cross-cutting infra — logging, S3, CloudWatch URL builders, SQS task helpers.

Adding a new shared package

Only when a real second consumer materialises. Don't pre-shatter (repos-epc, repos-property, ...) — split when a deployment needs to drop a dep, not before.

See ../ara_backend_design.md §11 for the broader monorepo layout and ../CONTEXT.md for the domain glossary that names the types living in domain/.