Model/packages/domain/src/domain
Khalim Conn-Kowlessar d6e2c99f5b §4 orchestrator: water_heating_from_cert + WaterHeatingResult
Chains every leaf function landed in slices 1-9 into a single call that
takes an EpcPropertyData + the few site-notes inputs that aren't on the
domain object yet (shower flow rates, has_bath, cold-water source, low-
water-use flag). Mirrors heat_transmission_from_cert's shape from §3.

WaterHeatingResult exposes the line refs (42), (43), (44)m, (45)m, (46)m,
(61)m, (62)m, (64)m, (65)m plus the annual sum of (64)m as
`output_kwh_per_yr` — that's the slot calculator.py's CalculatorInputs
expects for `hot_water_kwh_per_yr` (modulo division by water heater
efficiency, handled by the caller).

`combi_loss_monthly_kwh_override` accepts a (61)m array for PCDB-tested
boilers (Table 3b/3c) since those need r1+F1 parameters we haven't
implemented. Defaulting to Table 3a row "time-clock keep-hot" suits the
modal non-PCDB combi lodging.

Validated end-to-end against both Elmhurst non-RR fixtures:
  - 000490: cascade-default combi loss, output matches annual to 0.01 kWh
  - 000474: PCDB-derived (61)m injected, output matches to 0.01 kWh

Cylinder + solar + WWHRS/PV/FGHRS + electric-shower branches default to
zero — extension slices land them when needed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-20 16:23:56 +00:00
..
ml u_exposed_floor: Table 20 lookup for exposed/semi-exposed upper floors 2026-05-20 13:19:46 +00:00
sap §4 orchestrator: water_heating_from_cert + WaterHeatingResult 2026-05-20 16:23:56 +00:00
__init__.py added potential file scaffolding: 2026-05-15 10:56:53 +00:00