mirror of
https://github.com/Hestia-Homes/Model.git
synced 2026-06-08 11:17:27 +00:00
57bf7833a9
Sixth slice of the SAP10 Calculator Session A (ADR-0009). Two layers
under domain.sap.worksheet.solar_gains:
1. surface_solar_flux_w_per_m2(orientation, pitch_deg, region, month)
— implements Appendix U §U3.2 polynomial that converts the horizontal
solar irradiance from Table U3 to per-orientation per-pitch surface
flux:
S(orient, p, m) = S_h,m × R_h-inc
R_h-inc = A cos²(φ-δ) + B cos(φ-δ) + C
where A, B, C are cubics in sin(p/2) with coefficients k1-k9 from
Table U5. Reads latitude φ from Table U4 and solar declination δ
from Table U3 footer (already in domain.sap.climate.appendix_u).
2. window_solar_gain_w(area_m2, surface_flux, g⊥, FF, Z)
— implements §6.1 equation (5): G = 0.9 × A × S × g⊥ × FF × Z.
Orientation enum maps the 8 SAP cardinal codes to the 5 Table U5 columns:
N/S to their own column; NE/NW share; E/W share; SE/SW share.
7 AAA cycles cover: UK average South vertical July hand-computed flux,
rooflight pitch=0 collapses to horizontal Table U3 directly, North-vertical
summer > winter (diffuse signal), NE/NW share constants symmetry, equation
(5) window gain, zero-area edge case, out-of-range region validation.
Tables 6b (g⊥), 6c (frame factor), 6d (overshading Z) defaults deferred
to the cert→inputs mapper slice — callers pass them explicitly here so
the physics stays cert-shape-independent.
|
||
|---|---|---|
| .. | ||
| src/domain | ||
| pyproject.toml | ||
| README.md | ||
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/.