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 7786a6e9b7 slice S-B21: wind shelter factor on infiltration (SAP §2) 
Per SAP 10.3 §2 worksheet line 22 / RdSAP10 §4.1: effective infiltration =
raw_ACH × (1 - 0.075 × sheltered_sides). Default 2 sheltered sides for
typical UK terraced/semi-detached layout (the cert doesn't lodge a
sheltered-sides count, so we apply the spec's typical default).

infiltration_ach() gains a `sheltered_sides` kwarg defaulting to 0
(spec-pure intermediate result; existing unit tests keep that contract).
cert_to_inputs passes sheltered_sides=2.

Found via energy decomposition: our predicted total energy was running
+15.7 kWh/m² over cert (10% over) — wind shelter knocks ~15% off
infiltration, contributing to closing that gap.

300-cert parity probe:
  MAE 5.43 → 5.34 (-0.09)
  bias -0.52 → +0.29 (back near zero)
  within ±10: 86.3% → 86.7%

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-18 18:56:35 +00:00
..
domain slice S-B21: wind shelter factor on infiltration (SAP §2) 2026-05-18 18:56:35 +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/.