Skip to content

Commit

Permalink
Move a few more defaulting methods.
Browse files Browse the repository at this point in the history
  • Loading branch information
@shorowit
shorowit committed Sep 29, 2024
1 parent 7baddc9 commit 1e8e3c6
Show file tree
Hide file tree
Showing 6 changed files with 114 additions and 104 deletions.
14 changes: 7 additions & 7 deletions HPXMLtoOpenStudio/measure.xml
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,8 @@
<schema_version>3.1</schema_version>
<name>hpxm_lto_openstudio</name>
<uid>b1543b30-9465-45ff-ba04-1d1f85e763bc</uid>
<version_id>e3bad851-b1bc-4f8b-93fb-73f6c8f78e3e</version_id>
<version_modified>2024-09-28T21:30:55Z</version_modified>
<version_id>ff7eac20-94f1-4b91-89fd-9df3900e3451</version_id>
<version_modified>2024-09-29T18:04:49Z</version_modified>
<xml_checksum>D8922A73</xml_checksum>
<class_name>HPXMLtoOpenStudio</class_name>
<display_name>HPXML to OpenStudio Translator</display_name>
Expand Down Expand Up @@ -189,7 +189,7 @@
<filename>airflow.rb</filename>
<filetype>rb</filetype>
<usage_type>resource</usage_type>
<checksum>2CDDC527</checksum>
<checksum>EFB81F7D</checksum>
</file>
<file>
<filename>battery.rb</filename>
Expand Down Expand Up @@ -339,7 +339,7 @@
<filename>geometry.rb</filename>
<filetype>rb</filetype>
<usage_type>resource</usage_type>
<checksum>D302A89B</checksum>
<checksum>D792E2E4</checksum>
</file>
<file>
<filename>hotwater_appliances.rb</filename>
Expand All @@ -357,7 +357,7 @@
<filename>hpxml_defaults.rb</filename>
<filetype>rb</filetype>
<usage_type>resource</usage_type>
<checksum>29ADB091</checksum>
<checksum>D16B3ACE</checksum>
</file>
<file>
<filename>hpxml_schema/HPXML.xsd</filename>
Expand Down Expand Up @@ -387,13 +387,13 @@
<filename>hvac.rb</filename>
<filetype>rb</filetype>
<usage_type>resource</usage_type>
<checksum>4FEA518E</checksum>
<checksum>20D3FE05</checksum>
</file>
<file>
<filename>hvac_sizing.rb</filename>
<filetype>rb</filetype>
<usage_type>resource</usage_type>
<checksum>CA9FBBD6</checksum>
<checksum>266671E2</checksum>
</file>
<file>
<filename>internal_gains.rb</filename>
Expand Down
4 changes: 2 additions & 2 deletions HPXMLtoOpenStudio/resources/airflow.rb
View file
Original file line number Diff line number Diff line change
Expand Up @@ -547,8 +547,8 @@ def self.apply_natural_ventilation_and_whole_house_fan(runner, model, spaces, hp
vent_program.addLine("Set Tnvsp = (#{htg_sp_sensor.name} + #{clg_sp_sensor.name}) / 2")
else
# No HVAC system; use the average of defaulted heating/cooling setpoints.
htg_weekday_setpoints, htg_weekend_setpoints = HVAC.get_default_heating_setpoint(HPXML::HVACControlTypeManual, hpxml_header.eri_calculation_version)
clg_weekday_setpoints, clg_weekend_setpoints = HVAC.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, hpxml_header.eri_calculation_version)
htg_weekday_setpoints, htg_weekend_setpoints = HPXMLDefaults.get_default_heating_setpoint(HPXML::HVACControlTypeManual, hpxml_header.eri_calculation_version)
clg_weekday_setpoints, clg_weekend_setpoints = HPXMLDefaults.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, hpxml_header.eri_calculation_version)
if htg_weekday_setpoints.split(', ').uniq.size == 1 && htg_weekend_setpoints.split(', ').uniq.size == 1 && htg_weekday_setpoints.split(', ').uniq == htg_weekend_setpoints.split(', ').uniq
default_htg_sp = UnitConversions.convert(htg_weekend_setpoints.split(', ').uniq[0].to_f, 'F', 'C')
else
Expand Down
4 changes: 2 additions & 2 deletions HPXMLtoOpenStudio/resources/geometry.rb
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1808,14 +1808,14 @@ def self.get_space_temperature_schedule(model, location, spaces)

space_values = get_temperature_scheduled_space_values(location)

htg_weekday_setpoints, htg_weekend_setpoints = HVAC.get_default_heating_setpoint(HPXML::HVACControlTypeManual, @eri_version)
htg_weekday_setpoints, htg_weekend_setpoints = HPXMLDefaults.get_default_heating_setpoint(HPXML::HVACControlTypeManual, @eri_version)
if htg_weekday_setpoints.split(', ').uniq.size == 1 && htg_weekend_setpoints.split(', ').uniq.size == 1 && htg_weekday_setpoints.split(', ').uniq == htg_weekend_setpoints.split(', ').uniq
default_htg_sp = htg_weekend_setpoints.split(', ').uniq[0].to_f # F
else
fail 'Unexpected heating setpoints.'
end

clg_weekday_setpoints, clg_weekend_setpoints = HVAC.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, @eri_version)
clg_weekday_setpoints, clg_weekend_setpoints = HPXMLDefaults.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, @eri_version)
if clg_weekday_setpoints.split(', ').uniq.size == 1 && clg_weekend_setpoints.split(', ').uniq.size == 1 && clg_weekday_setpoints.split(', ').uniq == clg_weekend_setpoints.split(', ').uniq
default_clg_sp = clg_weekend_setpoints.split(', ').uniq[0].to_f # F
else
Expand Down
105 changes: 100 additions & 5 deletions HPXMLtoOpenStudio/resources/hpxml_defaults.rb
View file
Original file line number Diff line number Diff line change
Expand Up @@ -791,7 +791,7 @@ def self.apply_site(hpxml_bldg)
# Shielding Class 5 is ACCA MJ8 default for Table 5B/5E for townhouses and condos
hpxml_bldg.site.shielding_of_home = HPXML::ShieldingWellShielded
else
# Shielding Class 4 is ACCA MJ8 default for Table 5A/5D and ANSI/RESNET 301 default
# Shielding Class 4 is ACCA MJ8 default for Table 5A/5D and ANSI/RESNET/ICC 301 default
hpxml_bldg.site.shielding_of_home = HPXML::ShieldingNormal
end
hpxml_bldg.site.shielding_of_home_isdefaulted = true
Expand Down Expand Up @@ -1923,7 +1923,7 @@ def self.apply_hvac(runner, hpxml_bldg, weather, convert_shared_systems, unit_nu
next if [HPXML::HVACTypeHeatPumpGroundToAir, HPXML::HVACTypeHeatPumpWaterLoopToAir].include? heat_pump.heat_pump_type
next unless heat_pump.heating_detailed_performance_data.empty? # set after hvac sizing

heat_pump.heating_capacity_retention_temp, heat_pump.heating_capacity_retention_fraction = HVAC.get_default_heating_capacity_retention(heat_pump.compressor_type, heat_pump.heating_efficiency_hspf)
heat_pump.heating_capacity_retention_temp, heat_pump.heating_capacity_retention_fraction = get_default_heating_capacity_retention(heat_pump.compressor_type, heat_pump.heating_efficiency_hspf)
heat_pump.heating_capacity_retention_fraction_isdefaulted = true
heat_pump.heating_capacity_retention_temp_isdefaulted = true
end
Expand Down Expand Up @@ -2419,7 +2419,7 @@ def self.apply_hvac_control(hpxml_bldg, schedules_file, eri_version)
schedules_file_includes_heating_setpoint_temp = (schedules_file.nil? ? false : schedules_file.includes_col_name(SchedulesFile::Columns[:HeatingSetpoint].name))
if hvac_control.heating_setpoint_temp.nil? && hvac_control.weekday_heating_setpoints.nil? && !schedules_file_includes_heating_setpoint_temp
# No heating setpoints; set a default heating setpoint for, e.g., natural ventilation
htg_weekday_setpoints, htg_weekend_setpoints = HVAC.get_default_heating_setpoint(HPXML::HVACControlTypeManual, eri_version)
htg_weekday_setpoints, htg_weekend_setpoints = get_default_heating_setpoint(HPXML::HVACControlTypeManual, eri_version)
if htg_weekday_setpoints.split(', ').uniq.size == 1 && htg_weekend_setpoints.split(', ').uniq.size == 1 && htg_weekday_setpoints.split(', ').uniq == htg_weekend_setpoints.split(', ').uniq
hvac_control.heating_setpoint_temp = htg_weekend_setpoints.split(', ').uniq[0].to_f
else
Expand All @@ -2431,7 +2431,7 @@ def self.apply_hvac_control(hpxml_bldg, schedules_file, eri_version)
schedules_file_includes_cooling_setpoint_temp = (schedules_file.nil? ? false : schedules_file.includes_col_name(SchedulesFile::Columns[:CoolingSetpoint].name))
if hvac_control.cooling_setpoint_temp.nil? && hvac_control.weekday_cooling_setpoints.nil? && !schedules_file_includes_cooling_setpoint_temp
# No cooling setpoints; set a default cooling setpoint for, e.g., natural ventilation
clg_weekday_setpoints, clg_weekend_setpoints = HVAC.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, eri_version)
clg_weekday_setpoints, clg_weekend_setpoints = HPXMLDefaults.get_default_cooling_setpoint(HPXML::HVACControlTypeManual, eri_version)
if clg_weekday_setpoints.split(', ').uniq.size == 1 && clg_weekend_setpoints.split(', ').uniq.size == 1 && clg_weekday_setpoints.split(', ').uniq == clg_weekend_setpoints.split(', ').uniq
hvac_control.cooling_setpoint_temp = clg_weekend_setpoints.split(', ').uniq[0].to_f
else
Expand Down Expand Up @@ -4546,7 +4546,7 @@ def self.get_default_recirc_pump_power()
#
# @return [Double] Pump power (W)
def self.get_default_shared_recirc_pump_power()
# From ANSI/RESNET 301-2019 Equation 4.2-15b
# From ANSI/RESNET/ICC 301-2019 Equation 4.2-15b
pump_horsepower = 0.25
motor_efficiency = 0.85
pump_kw = pump_horsepower * 0.746 / motor_efficiency
Expand Down Expand Up @@ -5394,4 +5394,99 @@ def self.get_default_boiler_eae(heating_system)
end
end
end

# Gets the default interior/garage/exterior lighting fractions per ANSI/RESNET/ICC 301.
# Used by OS-ERI, OS-HEScore, etc.
#
# @return [Hash] Map of [HPXML::LocationXXX, HPXML::LightingTypeXXX] => lighting fraction
def self.get_default_lighting_fractions()
ltg_fracs = {}
[HPXML::LocationInterior, HPXML::LocationExterior, HPXML::LocationGarage].each do |location|
[HPXML::LightingTypeCFL, HPXML::LightingTypeLFL, HPXML::LightingTypeLED].each do |lighting_type|
if (location == HPXML::LocationInterior) && (lighting_type == HPXML::LightingTypeCFL)
ltg_fracs[[location, lighting_type]] = 0.1
else
ltg_fracs[[location, lighting_type]] = 0
end
end
end
return ltg_fracs
end

# Gets the default heating setpoints per ANSI/RESNET/ICC 301.
#
# @param control_type [String] Thermostat control type (HPXML::HVACControlTypeXXX)
# @param eri_version [String] Version of the ANSI/RESNET/ICC 301 Standard to use for equations/assumptions
# @return [Array<String, String>] 24 hourly comma-separated weekday and weekend setpoints
def self.get_default_heating_setpoint(control_type, eri_version)
# Per ANSI/RESNET/ICC 301
htg_wd_setpoints = '68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68'
htg_we_setpoints = '68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68'
if control_type == HPXML::HVACControlTypeProgrammable
if Constants::ERIVersions.index(eri_version) >= Constants::ERIVersions.index('2022')
htg_wd_setpoints = '66, 66, 66, 66, 66, 67, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
htg_we_setpoints = '66, 66, 66, 66, 66, 67, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
else
htg_wd_setpoints = '66, 66, 66, 66, 66, 66, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
htg_we_setpoints = '66, 66, 66, 66, 66, 66, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
end
elsif control_type != HPXML::HVACControlTypeManual
fail "Unexpected control type #{control_type}."
end
return htg_wd_setpoints, htg_we_setpoints
end

# Gets the default cooling setpoints per ANSI/RESNET/ICC 301.
#
# @param control_type [String] Thermostat control type (HPXML::HVACControlTypeXXX)
# @param eri_version [String] Version of the ANSI/RESNET/ICC 301 Standard to use for equations/assumptions
# @return [Array<String, String>] 24 hourly comma-separated weekday and weekend setpoints
def self.get_default_cooling_setpoint(control_type, eri_version)
# Per ANSI/RESNET/ICC 301
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78'
if control_type == HPXML::HVACControlTypeProgrammable
if Constants::ERIVersions.index(eri_version) >= Constants::ERIVersions.index('2022')
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 79, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 79, 78, 78, 78, 78, 78, 78, 78, 78, 78'
else
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 80, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 80, 78, 78, 78, 78, 78, 78, 78, 78, 78'
end
elsif control_type != HPXML::HVACControlTypeManual
fail "Unexpected control type #{control_type}."
end
return clg_wd_setpoints, clg_we_setpoints
end

# Gets the default heating capacity retention at 5F for a heat pump.
#
# @param compressor_type [String] Type of compressor (HPXML::HVACCompressorTypeXXX)
# @param hspf [Double] Heat pump efficiency
# @return [Array<Double, Double>] Temperature (F), heating capacity retention at the temperature (frac)
def self.get_default_heating_capacity_retention(compressor_type, hspf = nil)
retention_temp = 5.0
if [HPXML::HVACCompressorTypeSingleStage, HPXML::HVACCompressorTypeTwoStage].include? compressor_type
retention_fraction = 0.425
elsif [HPXML::HVACCompressorTypeVariableSpeed].include? compressor_type
# Default maximum capacity maintenance based on NEEP data for all var speed heat pump types, if not provided
retention_fraction = (0.0461 * hspf + 0.1594).round(4)
end
return retention_temp, retention_fraction
end

# Gets a 12-element array of 1s and 0s that reflects months for which the ceiling fan operates
# (i.e., when the average drybulb temperature is greater than 63F, per ANSI/RESNET/ICC 301).
#
# @param weather [WeatherFile] Weather object containing EPW information
# @return [Array<Integer>] monthly array of 1s and 0s
def self.get_default_ceiling_fan_months(weather)
months = [0] * 12
weather.data.MonthlyAvgDrybulbs.each_with_index do |val, m|
next unless val > 63.0 # F

months[m] = 1
end
return months
end
end
89 changes: 2 additions & 87 deletions HPXMLtoOpenStudio/resources/hvac.rb
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1317,7 +1317,7 @@ def self.apply_ceiling_fans(runner, model, spaces, weather, hpxml_bldg, hpxml_he
if !label_energy_use.nil? # priority if both provided
annual_kwh = UnitConversions.convert(count * label_energy_use * hrs_per_day * 365.0, 'Wh', 'kWh')
elsif !cfm_per_w.nil?
medium_cfm = get_default_ceiling_fan_medium_cfm()
medium_cfm = 3000.0 # cfm, per ANSI 301-2019
annual_kwh = UnitConversions.convert(count * medium_cfm / cfm_per_w * hrs_per_day * 365.0, 'Wh', 'kWh')
end

Expand Down Expand Up @@ -1587,68 +1587,6 @@ def self.get_cooling_setpoints(hvac_control, has_ceiling_fan, year, weather, off
return clg_wd_setpoints, clg_we_setpoints
end

# TODO
#
# @param control_type [TODO] TODO
# @param eri_version [String] Version of the ANSI/RESNET/ICC 301 Standard to use for equations/assumptions
# @return [TODO] TODO
def self.get_default_heating_setpoint(control_type, eri_version)
# Per ANSI/RESNET/ICC 301
htg_wd_setpoints = '68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68'
htg_we_setpoints = '68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68'
if control_type == HPXML::HVACControlTypeProgrammable
if Constants::ERIVersions.index(eri_version) >= Constants::ERIVersions.index('2022')
htg_wd_setpoints = '66, 66, 66, 66, 66, 67, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
htg_we_setpoints = '66, 66, 66, 66, 66, 67, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
else
htg_wd_setpoints = '66, 66, 66, 66, 66, 66, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
htg_we_setpoints = '66, 66, 66, 66, 66, 66, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 66'
end
elsif control_type != HPXML::HVACControlTypeManual
fail "Unexpected control type #{control_type}."
end
return htg_wd_setpoints, htg_we_setpoints
end

# TODO
#
# @param control_type [TODO] TODO
# @param eri_version [String] Version of the ANSI/RESNET/ICC 301 Standard to use for equations/assumptions
# @return [TODO] TODO
def self.get_default_cooling_setpoint(control_type, eri_version)
# Per ANSI/RESNET/ICC 301
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78'
if control_type == HPXML::HVACControlTypeProgrammable
if Constants::ERIVersions.index(eri_version) >= Constants::ERIVersions.index('2022')
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 79, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 79, 78, 78, 78, 78, 78, 78, 78, 78, 78'
else
clg_wd_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 80, 78, 78, 78, 78, 78, 78, 78, 78, 78'
clg_we_setpoints = '78, 78, 78, 78, 78, 78, 78, 78, 78, 80, 80, 80, 80, 80, 80, 78, 78, 78, 78, 78, 78, 78, 78, 78'
end
elsif control_type != HPXML::HVACControlTypeManual
fail "Unexpected control type #{control_type}."
end
return clg_wd_setpoints, clg_we_setpoints
end

# TODO
#
# @param compressor_type [TODO] TODO
# @param hspf [TODO] TODO
# @return [TODO] TODO
def self.get_default_heating_capacity_retention(compressor_type, hspf = nil)
retention_temp = 5.0
if [HPXML::HVACCompressorTypeSingleStage, HPXML::HVACCompressorTypeTwoStage].include? compressor_type
retention_fraction = 0.425
elsif [HPXML::HVACCompressorTypeVariableSpeed].include? compressor_type
# Default maximum capacity maintenance based on NEEP data for all var speed heat pump types, if not provided
retention_fraction = (0.0461 * hspf + 0.1594).round(4)
end
return retention_temp, retention_fraction
end

# TODO
#
# @param compressor_type [TODO] TODO
Expand Down Expand Up @@ -2092,29 +2030,6 @@ def self.set_curves_gshp(heat_pump)
hp_ap.heat_rated_cops = [1.0 / heat_eir]
end

# TODO
#
# @return [TODO] TODO
def self.get_default_ceiling_fan_medium_cfm()
# From ANSI 301-2019
return 3000.0 # cfm
end

# Return a 12-element array of 1s and 0s that reflects months for which the average drybulb temperature is greater than 63F.
#
# @param weather [WeatherFile] Weather object containing EPW information
# @return [Array<Integer>] monthly array of 1s and 0s
def self.get_default_ceiling_fan_months(weather)
# Per ANSI/RESNET/ICC 301
months = [0] * 12
weather.data.MonthlyAvgDrybulbs.each_with_index do |val, m|
next unless val > 63.0 # F

months[m] = 1
end
return months
end

# TODO
#
# @param weather [WeatherFile] Weather object containing EPW information
Expand Down Expand Up @@ -3124,7 +3039,7 @@ def self.correct_ft_cap_eir(data_array, mode)
indoor_t = [50.0, rated_t_i, 80.0]
else
# default capacity retention for single speed
retention_temp, retention_fraction = get_default_heating_capacity_retention(HPXML::HVACCompressorTypeSingleStage)
retention_temp, retention_fraction = HPXMLDefaults.get_default_heating_capacity_retention(HPXML::HVACCompressorTypeSingleStage)
cap_ft_spec_ss, eir_ft_spec_ss = get_heat_cap_eir_ft_spec(HPXML::HVACCompressorTypeSingleStage, retention_temp, retention_fraction)
rated_t_i = HVAC::AirSourceHeatRatedIDB
indoor_t = [60.0, rated_t_i, 80.0]
Expand Down
2 changes: 1 addition & 1 deletion HPXMLtoOpenStudio/resources/hvac_sizing.rb
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2498,7 +2498,7 @@ def self.adjust_indoor_condition_var_speed(outdoor_temp, indoor_temp, mode)
coefficients_1speed = HVAC.get_cool_cap_eir_ft_spec(HPXML::HVACCompressorTypeSingleStage)[0][0]
elsif mode == :htg
rated_indoor_temp = HVAC::AirSourceHeatRatedIDB
capacity_retention_temp_1speed, capacity_retention_fraction_1speed = HVAC.get_default_heating_capacity_retention(HPXML::HVACCompressorTypeSingleStage)
capacity_retention_temp_1speed, capacity_retention_fraction_1speed = HPXMLDefaults.get_default_heating_capacity_retention(HPXML::HVACCompressorTypeSingleStage)
coefficients_1speed = HVAC.get_heat_cap_eir_ft_spec(HPXML::HVACCompressorTypeSingleStage, capacity_retention_temp_1speed, capacity_retention_fraction_1speed)[0][0]
end
return MathTools.biquadratic(indoor_temp, outdoor_temp, coefficients_1speed) / MathTools.biquadratic(rated_indoor_temp, outdoor_temp, coefficients_1speed)
Expand Down

0 comments on commit 1e8e3c6

Please sign in to comment.