HVAC Autosizing Limits

[willf]

Pull Request Description

Addresses NREL#1154.
Tests NREL/OpenStudio-HPXML#1584 and NREL/OpenStudio-HPXML#1558.
Supersedes NREL#1179.

Add sample files:

• national_upgrades_HPs_TMY3.yml and national_upgrades_HPs_AMY2018.yml
  • Case 1: Baseline Stock - TMY3
  • Case 2: Baseline Upgrade - EnergyStar Heat Pump, Existing System Backup
  • Case 3: Baseline Upgrade - EnergyStar Heat Pump, Electric Backup
  • Case 4: Baseline Upgrade - EnergyStar Heat Pump, Existing System Backup, Compressor Lockout
    • A: 20F
    • B: 30F
    • C: 40F
  • Case 5: New Dual-Fuel System, Backup Lockout
    • A: 1.67F
    • B: 18.33F
    • C: 35F
  • Case 7: Heat Pump Selection – EnergyStar Mid Efficiency, Electric Backup
  • Case 8: Heat Pump Selection – Typical Cold Climate
  • Case 9: Heat Pump Selection – High COP, Cold-Temperature
  • Case 10: Heat Pump Selection – High COP, Part Load
  • Case 11: Heat Pump Selection – High Capacity, Cold Temperature
  • Case 12: Heat Pump Selection - DOE CCHP Challenge
  • Case 13: Heat Pump Selection - TBD
  • Case 14: Heat Pump Sizing – Typical Cold Climate (Case 8)
    • A
      • Ducted: 25% between Autosize Limit and MaxLoad
      • Ductless: 25% between ACCA and MaxLoad
    • B
      • Ducted: 50%
      • Ductless: 50%
    • C
      • Ducted: MaxLoad
      • Ductless: ACCA
    • D
      • Ducted: ACCA
      • Ductless: skip
  • Case 15: Heat Pump Sizing - EnergyStar Heat Pump, Electric Backup (Case 3)
    • A
      • Ducted: 25% between Autosize Limit and MaxLoad
      • Ductless: 25% between ACCA and MaxLoad
    • B
      • Ducted: 50%
      • Ductless: 50%
    • C
      • Ducted: MaxLoad
      • Ductless: ACCA
    • D
      • Ducted: ACCA
      • Ductless: skip

Add cost multipliers:

• upgrade_costs.air_flow_rate_heating_system_primary_cfm
• upgrade_costs.air_flow_rate_heating_system_secondary_cfm
• upgrade_costs.air_flow_rate_cooling_system_primary_cfm
• upgrade_costs.air_flow_rate_heat_pump_backup_primary_cfm

Checklist

Not all may apply:

• Tests (and test files) have been updated
• Documentation has been updated
  • If related to resstock-estimation, checklist includes data dictionary, source report, options saturation, options_lookup.
• Changelog has been updated
• openstudio tasks.rb update_measures has been run
• No unexpected regression test changes on CI (checked comparison artifacts)

_{Source: NREL on 2024-01-24.}