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SAP 10.2 Appendix N2 (PDF p.101, footnote 44/45): for an air/ground/water source heat pump whose plant size ratio exceeds the record's largest PSR, the efficiency is reciprocal-interpolated between the largest-PSR value and 100% at twice the largest PSR (100% beyond that); below the smallest PSR the efficiency is 100%. Our interpolator instead clamps to the top/bottom row. Anchored to the accredited Elmhurst worksheet for cert 100110101713 (golden fixture case 56, PCDB 100061): PSR 3.10665 over the record's largest 2.0 gives eta_space,1 = 147.011 -> (206) = 0.95 x 147.011 = 139.660, vs the clamped 352.0 -> 334.4% that over-rates the dwelling by +18 SAP. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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| .. | ||
| climate | ||
| rdsap | ||
| validation | ||
| worksheet | ||
| __init__.py | ||
| test_bre_worked_examples.py | ||
| test_calculator.py | ||
| test_pcdb_etl.py | ||
| test_pcdb_lookup.py | ||
| test_pcdb_table_322_lookup.py | ||
| test_pcdb_table_323_lookup.py | ||
| test_pcdb_table_329_lookup.py | ||
| test_pcdb_table_362_lookup.py | ||
| test_postcode_weather.py | ||
| test_real_cert_sap_accuracy.py | ||
| test_table_12.py | ||
| test_table_12a.py | ||
| test_table_13.py | ||
| test_table_32.py | ||