Update HVAC models per RESNET HVAC addendum

.github/workflows/config.yml

@@ -137,7 +137,7 @@ jobs:
 
   merge-results:
     runs-on: ubuntu-22.04
-    needs: [run-workflow1-tests, run-workflow2-tests, run-unit-tests]
+    needs: [run-workflow1-tests, run-workflow2-tests]
     steps:
       - uses: actions/checkout@v4
         with:

BuildResidentialHPXML/measure.rb

@@ -6435,8 +6435,7 @@ def self.set_ventilation_fans(hpxml_bldg, args)
         if distribution_system_idref.nil?
           # Allow for PTAC/PTHP by automatically adding a DSE=1 distribution system to attach the CFIS to
           hpxml_bldg.hvac_systems.each do |hvac_system|
-            next unless (hvac_system.is_a?(HPXML::CoolingSystem) && [HPXML::HVACTypePTAC, HPXML::HVACTypeRoomAirConditioner].include?(hvac_system.cooling_system_type)) ||
-                        (hvac_system.is_a?(HPXML::HeatPump) && [HPXML::HVACTypeHeatPumpPTHP, HPXML::HVACTypeHeatPumpRoom].include?(hvac_system.heat_pump_type))
+            next unless HVAC.is_room_dx_hvac_system(hvac_system)
 
             hpxml_bldg.hvac_distributions.add(id: "HVACDistribution#{hpxml_bldg.hvac_distributions.size + 1}",
                                               distribution_system_type: HPXML::HVACDistributionTypeDSE,

BuildResidentialHPXML/measure.xml

@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>build_residential_hpxml</name>
   <uid>a13a8983-2b01-4930-8af2-42030b6e4233</uid>
-  <version_id>9020722b-d574-4332-96a0-10d947d437fc</version_id>
-  <version_modified>2025-01-02T23:48:53Z</version_modified>
+  <version_id>9b36b792-68b7-48ff-a053-8581e5fbb4fa</version_id>
+  <version_modified>2025-01-03T03:34:13Z</version_modified>
   <xml_checksum>2C38F48B</xml_checksum>
   <class_name>BuildResidentialHPXML</class_name>
   <display_name>HPXML Builder</display_name>
@@ -7544,7 +7544,7 @@
       <filename>measure.rb</filename>
       <filetype>rb</filetype>
       <usage_type>script</usage_type>
-      <checksum>DF604C07</checksum>
+      <checksum>CD62272E</checksum>
     </file>
     <file>
       <filename>constants.rb</filename>

Changelog.md

@@ -1,6 +1,9 @@
 ## OpenStudio-HPXML v1.10.0
 
 __New Features__
+- HVAC modeling updates:
+  - Updated DX heat pump and air conditioner models per RESNET MINHERS Addendum 82.
+  - Allows optional EER or EER2 inputs for central air conditioners/heat pumps and mini-splits.
 
 __Bugfixes__
 - Fixes zero occupants specified for one unit in a whole MF building from being treated like zero occupants for every unit.
@@ -52,6 +55,9 @@ __New Features__
   - Optional input `SimulationControl/AdvancedResearchFeatures/OnOffThermostatDeadbandTemperature` to model on/off thermostat deadband with start-up degradation for single and two speed AC/ASHP systems and time-based realistic staging for two speed AC/ASHP systems.
   - Optional input `SimulationControl/AdvancedResearchFeatures/HeatPumpBackupCapacityIncrement` to model multi-stage electric backup coils with time-based staging.
   - Maximum power ratio detailed schedule for variable-speed HVAC systems can now be used with `NumberofUnits` dwelling unit multiplier.
+- RESNET HVAC modeling appendix:
+  - Added optional `extension/FanMotorType`, changed rated fan power (w/cfm) and measured FanPowerWattsPerCFM assumptions to be based on fan motor type.
+  - Updated the fan power calculation at each speed to be based on fan model type and whether ducted.
 - BuildResidentialHPXML measure:
   - **Breaking change**: Replaced `slab_under_width` and `slab_perimeter_depth` arguments with `slab_under_insulation_width` and `slab_perimeter_insulation_depth`
   - **Breaking change**: Replaced `schedules_vacancy_periods`, `schedules_power_outage_periods`, and `schedules_power_outage_periods_window_natvent_availability` arguments with `schedules_unavailable_period_types`, `schedules_unavailable_period_dates`, and `schedules_unavailable_period_window_natvent_availabilities`; this improves flexibility for handling more unavailable period types.

HPXMLtoOpenStudio/measure.xml

@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>hpxm_lto_openstudio</name>
   <uid>b1543b30-9465-45ff-ba04-1d1f85e763bc</uid>
-  <version_id>95e76879-5bd0-4f40-9bc9-a6f07b622400</version_id>
-  <version_modified>2025-01-03T03:27:12Z</version_modified>
+  <version_id>7fcc111a-b955-4915-915b-1782dd485bf7</version_id>
+  <version_modified>2025-01-03T20:32:45Z</version_modified>
   <xml_checksum>D8922A73</xml_checksum>
   <class_name>HPXMLtoOpenStudio</class_name>
   <display_name>HPXML to OpenStudio Translator</display_name>
@@ -327,7 +327,7 @@
       <filename>defaults.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>EB4D5A1A</checksum>
+      <checksum>7646CD36</checksum>
     </file>
     <file>
       <filename>energyplus.rb</filename>
@@ -357,7 +357,7 @@
       <filename>hpxml.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>270F2EEB</checksum>
+      <checksum>DC04D304</checksum>
     </file>
     <file>
       <filename>hpxml_schema/HPXML.xsd</filename>
@@ -375,7 +375,7 @@
       <filename>hpxml_schematron/EPvalidator.xml</filename>
       <filetype>xml</filetype>
       <usage_type>resource</usage_type>
-      <checksum>105F837D</checksum>
+      <checksum>0AC30606</checksum>
     </file>
     <file>
       <filename>hpxml_schematron/iso-schematron.xsd</filename>
@@ -387,13 +387,13 @@
       <filename>hvac.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>0A9C42C1</checksum>
+      <checksum>A5094D87</checksum>
     </file>
     <file>
       <filename>hvac_sizing.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>A079BB8E</checksum>
+      <checksum>8F69ECDF</checksum>
     </file>
     <file>
       <filename>internal_gains.rb</filename>
@@ -663,7 +663,7 @@
       <filename>test_defaults.rb</filename>
       <filetype>rb</filetype>
       <usage_type>test</usage_type>
-      <checksum>7E9FC2FA</checksum>
+      <checksum>25AB39F0</checksum>
     </file>
     <file>
       <filename>test_enclosure.rb</filename>
@@ -687,7 +687,7 @@
       <filename>test_hvac.rb</filename>
       <filetype>rb</filetype>
       <usage_type>test</usage_type>
-      <checksum>7954392A</checksum>
+      <checksum>20BDB294</checksum>
     </file>
     <file>
       <filename>test_hvac_sizing.rb</filename>
@@ -735,7 +735,7 @@
       <filename>test_validation.rb</filename>
       <filetype>rb</filetype>
       <usage_type>test</usage_type>
-      <checksum>86EC5703</checksum>
+      <checksum>DEFF0AA8</checksum>
     </file>
     <file>
       <filename>test_water_heater.rb</filename>