Model/packages/domain
Khalim Conn-Kowlessar 4d838bb03c slice 20a: ventilation_heat_loss_w_per_k feature (v2.7.0)
Adds SAP10.2 §C tracer-bullet infiltration model as a new physics-as-feature
column alongside envelope_heat_loss_w_per_k. ACH = structural baseline
(0.35 masonry / 0.25 timber-or-system-built) + open chimneys at 40 m³/h each
minus a draught-proofing reduction scaled by window_pct_draught_proofed,
then volumed and converted to W/K. Targets the d0 catastrophic-low-SAP tail
where chimney + leakage signals dominate but envelope conduction alone
under-counts heat loss.

Scope deferred to follow-ups: MVHR/MEV factors (mechanical_ventilation is
100% null in the corpus), pressure-test override (pressure_test also 100%
null - slice 18e mapper fix), open flues / passive vents / flueless gas
fires (sap_ventilation sparsely populated).
2026-05-17 18:30:02 +00:00
..
src/domain slice 20a: ventilation_heat_loss_w_per_k feature (v2.7.0) 2026-05-17 18:30:02 +00:00
pyproject.toml slice 13: to_rows(properties) returns pd.DataFrame 2026-05-16 16:43:28 +00:00
README.md added potential file scaffolding: 2026-05-15 10:56:53 +00:00

domna-domain

Shared domain types — Property, Properties, BaselinePerformance, Plan, PlanPhase, Scenario, ScenarioPhase, ScenarioSnapshot, Recommendation, OptimisedPackage, EpcPropertyData, etc.

Boundary: types only. No persistence, no IO, no business logic. Other packages and services depend on domna-domain; this package depends on nothing internal.

Domain definitions live in ../../CONTEXT.md. New types added here must match the glossary terms.

Layout

src/domain/
├── __init__.py
├── property.py             # Property, Properties, PropertyIdentity
├── site_notes.py
├── landlord_overrides.py
├── baseline_performance.py # lodged + effective pair (ADR-0004)
├── plan.py                 # Plan, PlanPhase, OptimisedPackage
├── scenario.py             # Scenario, ScenarioPhase, ScenarioSnapshot (ADR-0005)
├── recommendation.py
├── geospatial.py
├── solar.py
├── anomaly_flags.py
└── ml/
    ├── __init__.py
    ├── transform.py        # EpcMlTransform (versioned per §8.3)
    └── schema.py

When datatypes/epc/domain/ folds in, the EPC schema types move under src/domain/epc/.