Input Files and Arguments

HPXML File

OCHRE uses the Home Performance eXtensible Markup Language, or HPXML, file format for defining building properties. HPXML provides a standardized format for all the relevant inputs for a building energy model of a residential building. The full HPXML schema and a validator tool is available here. HPXML is continuously updated to account for additional relevant properties, and in some cases extension elements can be used to store additional information not currently included in the schema.

• Standardized data format designed for interoperability between stakeholders

• Generated during audits with REM/Rate, but also by other NREL tools like ResStock (or any other OS-HPXML based workflow)

• HPXML integration allows us to quickly generate corresponding models suitable for co-simulation based on other workflows

Schedule Input File

A schedule input file is optional but highly recommended. OS-HPXML has two different types of occupancy models it supports: “asset” and “operational” (see here for more information). The “asset” occupant model uses the schedules defined in ANSI/RESNET 301 for all occupant driven loads, but note that these schedules represent a smooth average usage for all of the occupant driven loads (hot water usage, dishwasher, clothes washer, clothes dryer, and cooking range) as well as occupancy itself. The “operational” calculation uses a stochastic event generator (described here) to model more realistic events associated with the occupant driven loads. The operational (or stochastic) model is most often used in OCHRE as it more realistically models the on/off usage of these devices and therefore gets a better estimate of the power spikes associated with their usage.

The schedule file (usually named “schedules.csv”) is generated when using ResStock or when using BEopt and selecting stochastic schedules for each end use. The file contains all necessary times series schedule information for load profiles as well as hourly temperature setpoints for both thermostats and water heaters (See the OS-HPXML documentation for more information.

Tip: The load profile values in the schedule input file are normalized. OCHRE can save a schedule file after initialization that contains load profiles for each scheduled equipment in units of kW.

Weather File

A weather input file is required for simulating a dwelling. OCHRE accepts EnergyPlus and National Solar Radiation Database (NSRDB) weather file formats.

Generating Input Files

A large advantage to using HPXML is the interoperability it provides, particularly with other NREL building energy modeling tools. HPXML files can be generated using the OS-HPXML workflow, which is documented here. This workflow is used in both BEopt (version 3.0 or later) and ResStock (version 3.0 or later). As a result, a user familiar with these other tools generates OCHRE input files as part of their normal workflow. This allows these other tools to be used as a front end and enables quick comparisons between OCHRE and EnergyPlus. OCHRE has been tested with HPXML files from both workflows, but note it does not currently support all of the features of these tools.

HPXML and occupancy schedule input files can be generated from:

• BEopt 3.0 or later: best for designing a single building model. Includes a user interface to select building features. Note that the occupancy schedule file is optional; users must specify stochastic occupancy in BEopt. To generate input files from BEopt, run your model as usual. The input files you need for OCHRE (in.hpxml and schedules.csv) will be automatically generated and are located in ‘C:/Users/your_username/Documents/BEopt_3.0.x/TEMP1/1/run’. BEopt generates several xml files as part of the workflow, but the one OCHRE is looking for is always within the run directory.

• End-Use Load Profiles Database: best for using pre-existing building models

• ResStock: best for existing ResStock users and for users in need of a large sample of building models.

Weather input files can be generated from:

• BEopt or EnergyPlus: for TMY weather files in EPW format

• NSRDB: for TMY and AMY weather files in NSRDB format

• The ResStock dataset: for weather files that align with ResStock-generated HPXML files.

Dwelling Arguments

A Dwelling model can be initialized using:

from OCHRE import Dwelling
house = Dwelling(**dwelling_args)

where dwelling_args is a Python dictionary of Dwelling arguments.

The table below lists the required arguments for creating a Dwelling model.

Argument Name	Argument Type	Description
start_time	datetime.datetime	Simulation start time
time_res	datetime.timedelta	Simulation timestep
duration	datetime.timedelta	Simulation duration
hpxml_file	string	Path to hpxml file
weather_file	string	Path to weather file
weather_path	string	Path to directory of weather files [1]

[1]

If weather_path is used, weather_file will be read from the HPXML file. Useful if running a batch of files with different weather files (i.e., from ResStock)

The table below lists the optional arguments for creating a Dwelling model.

Argument Name	Argument Type	Default Value	Description
name	string	None	Name of the simulation
schedule_input_file	string	None	Path to schedule input file
initialization_time	datetime.timedelta	None	Length of “warm up” simulation for initial conditions [2]
time_zone	string	None [3]	Use DST for local U.S. time zone with daylight savings, noDST for local U.S. time zone without [4]
verbosity	int	1	Verbosity of the outputs, from 0-9. See Outputs and Analysis for details.
metrics_verbosity	int	1	Verbosity of metrics, from 0-9. See Dwelling Metrics for details.
output_path	string	[5]	Path to saved output files
output_to_parquet	boolean	False	Save time series data as parquet (instead of .csv)
export_res	datetime.timedelta	None [6]	Time resolution to save results
save_results	boolean	TRUE if verbosity > 0	Save results, including time series, metrics, status, and schedule outputs
save_args_to_json	boolean	FALSE	Save all input arguments to .json file, including user defined arguments. [7]
save_status	boolean	TRUE [8]	Save status file for is simulation completed or failed
save_schedule_columns	list	Empty list	List of time series inputs to save to schedule outputs file
schedule	pandas.DataFrame	None	Schedule with equipment and weather data that overrides the schedule_input_file and the equipment_schedule_file. Not required for Dwelling
ext_time_res	datetime.timedelta	None	Time resolution for external controller. Required for Duty Cycle control.
seed	int or string	HPXML or schedule file	Random seed for initial temperatures and EV event data
modify_hpxml_dict	dict	empty dict	Dictionary that directly modifies values from HPXML file
Envelope	dict	empty dict	Includes envelope specific arguments
Equipment	dict	empty dict	Includes equipment specific arguments

[2]

While not required, a warm up period is recommended. The warm up gets more accurate initial conditions for the simulation by running a few prior days. Warm up is particularly helpful for simulation with a shorter duration

[3]

None means no time zone is modeled or considered.

[4]

Can also accept any time zone in pyzt.all_timezones

[5]

Default location is same as HPXML file

[6]

Default is time step for time series data

[7]

If False and verbosity > 3, .json will only include HPXML properties

[8]

If verbosity > 0, else FALSE

Envelope arguments can be included to modify the default envelope model that is based on the HPXML file. The table below lists optional arguments for the Envelope dictionary.

Argument Name	Argument Type	Default Value	Description
initial_temp_setpoint	number	Random temperature within HVAC deadband	Initial temperature for Indoor zone. It is set before the initialization time
linearize_infiltration	boolean	FALSE	Linearizes infiltration heat pathways and incorporates in state space matrices
external_radiation_method	string	“full”	Option to use detailed radiation method (“full”), linearized radiation (“linear”), or no radiation (None)
internal_radiation_method	string	“full”	Option to use detailed radiation method (“full”), linearized radiation (“linear”), or no radiation (None)
reduced_states	integer	None	Number of states for envelope model reduction
reduced_min_accuracy	number	None	Minimum accuracy to determine number of states for envelope model reduction
save_matrices	boolean	FALSE	Saves envelope state space matrices to files
save_matrices_time_res	datetime.timedelta	None	Time resolution for discretizing saved matrices. If None, saves continuous time matrices
zones	dict of dicts	Empty dict	Includes arguments for individual zones

The zones dictionary keys can be from the list: ['Indoor', 'Attic', 'Garage', 'Foundation']. The table below lists optional arguments for each zone dictionary.

Argument Name	Argument Type	Default Value	Description
enable_humidity	boolean	True for Indoor zone, else False	If True, OCHRE models humidity in the given zone
Thermal Mass Multiplier	number	7	Multiplier for zone’s thermal mass (i.e., capacitance)
Volume (m^3)	number	Taken from HPXML file	Volume of the given zone

We note that it is possible, though not recommended, to create an Envelope object without initializing a Dwelling. This can be done for very simple Envelope models. As an example, see the run_hvac function in run_equipment.py.

Equipment-specific Arguments

An Equipment model can be initialized in a very similar way to a Dwelling. For example, to initialize a battery:

from OCHRE import Battery
equipment = Battery(**equipment_args)

where equipment_args is a Python dictionary of Equipment arguments. A full set of the equipment classes available are listed in this section, by end use.

The table below lists the required arguments for creating any standalone Equipment model. Some equipment have additional required arguments as described in the sections below.

Argument Name	Argument Type	Description
start_time	datetime.datetime	Simulation start time
time_res	datetime.timedelta	Simulation time resolution
duration	datetime.timedelta	Simulation duration

The table below lists the optional arguments for creating any standalone Equipment model. Some equipment have additional optional arguments as described in the sections below.

Argument Name	Argument Type	Default Value	Description
name	string	OCHRE	Name of the simulation
initialization_time	datetime.timedelta	None (no initialization)	Runs a “warm up” simulation to improve initial temperature values
zone_name	string	None	Name of Envelope zone if envelope model exists
envelope_model	ochre.Envelope	None	Envelope model for measuring temperature impacts (required for HVAC equipment)
verbosity	int	1	Verbosity of the outputs, from 0-9. See Outputs and Analysis for details
output_path	string	HPXML or equipment schedule file directory	Path to saved output files
output_to_parquet	boolean	FALSE	Save time series files as parquet files (False saves as csv files)
export_res	datetime.timedelta	None (no intermediate data export)	Time resolution to save results to files
save_results	boolean	True if verbosity > 0	Save results files, including time series files, metrics file, schedule output file, and status file
save_args_to_json	boolean	FALSE	Save all input arguments to json file, including user defined arguments. If False and verbosity >= 3, the json file will only include HPXML properties.
save_status	boolean	True if save_results is True	Save status file to indicate whether the simulation is complete or failed
save_ebm_results	boolean	FALSE	Include equivalent battery model data in results
save_schedule_columns	list	Empty list	List of time series inputs to save to schedule output file
equipment_schedule_file	string	None	File with equipment time series data. Optional for most equipment
schedule_rename_columns	dict	None	Dictionary of {file_column_name: ochre_schedule_name} to rename columns in equipment_schedule_file. Sometimes used for PV
schedule_scale_factor	number	1	Scaling factor to normalize data in equipment_schedule_file. Sometimes used for PV to convert units
schedule	pandas.DataFrame	None	Schedule with equipment or weather data that overrides the schedule_input_file and the equipment_schedule_file. Not required for Dwelling and some equipment
ext_time_res	datetime.timedelta	None	Time resolution for external controller. Required if using Duty Cycle control
seed	int or string	HPXML or equipment schedule file	Random seed for setting initial temperatures and EV event data

The following sections list the names and arguments for all OCHRE equipment by end use. Many equipment types have all of their required arguments included in the HPXML properties. These properties can be overwritten by specifying the arguments in the equipment_args dictionary.

HVAC Heating and Cooling

OCHRE includes models for the following HVAC equipment:

End Use	Equipment Class	Equipment Name	Description
HVAC Heating	ElectricFurnace	Electric Furnace
HVAC Heating	ElectricBaseboard	Electric Baseboard
HVAC Heating	ElectricBoiler	Electric Boiler
HVAC Heating	GasFurnace	Gas Furnace
HVAC Heating	GasBoiler	Gas Boiler
HVAC Heating	HeatPumpHeater	Heat Pump Heater	Air Source Heat Pump with no electric resistance backup
HVAC Heating	ASHPHeater	ASHP Heater	Air Source Heat Pump, heating only
HVAC Heating	MSHPHeater	MSHP Heater	Minisplit Heat Pump, heating only
HVAC Cooling	AirConditioner	Air Conditioner	Central air conditioner
HVAC Cooling	RoomAC	Room AC	Room air conditioner
HVAC Cooling	ASHPCooler	ASHP Cooler	Air Source Heat Pump, cooling only
HVAC Cooling	MSHPCooler	MSHP Cooler	Minisplit Heat Pump, cooling only

The table below shows the required and optional equipment-specific arguments for HVAC equipment.

Argument Name	Argument Type	Required?	Default Value	Description
envelope_model	ochre.Envelope	Yes		Envelope model for measuring temperature impacts
use_ideal_capacity	boolean	No	True if time_res >= 5 minutes or for variable-speed equipment	If True, OCHRE sets HVAC capacity to meet the setpoint. If False, OCHRE uses thermostat deadband control
Capacity (W)	number or list of numbers	Yes	Taken from HPXML	Rated capacity of equipment. If a list, it is the rated capacity by speed
Minimum Capacity (W)	number	No	0	Minimum equipment capacity for ideal capacity equipment models
Conditioned Space Fraction (-)	number	No	Taken from HPXML file, or 1	Conditioned space fraction, e.g., for Room Air Conditioners
EIR (-)	number or list of numbers	Yes	Taken from HPXML file, or from Rated Efficiency	Energy input ratio (i.e., the inverse of the COP). If a list, it is the EIR by speed
SHR (-)	number or list of numbers	No	Taken from HPXML file, or from Rated Efficiency, or 1	Sensible heat ratio. If a list, it is the SHR by speed. Only for HVAC Cooling equipment
Rated Auxiliary Power (W)	number	Yes	Taken from HPXML file	Rated auxiliary power, including fan or pump power
initial_schedule	dict	Yes	Taken from first row of schedule	Dictionary of initial values in schedule
Ducts	dict	No	Taken from HPXML file, or sets distribution system efficiency to 1	Dictionary of inputs to determine HVAC distribution system efficiency
Basement Airflow Ratio (-)	number	No	0.2 for heaters if there is a conditioned basement, otherwise 0	Ratio of airflow and HVAC capacity to send to conditioned basement. For heaters only
Setpoint Temperature (C)	number	No	Taken from HPXML file or schedule file	Constant setpoint temperature
Weekday Setpoints (C)	list of 24 numbers	No	Taken from HPXML file or schedule file	Hourly weekday setpoint temperatures by hour
Weekend Setpoints (C)	list of 24 numbers	No	Taken from HPXML file or schedule file	Hourly weekend setpoint temperatures by hour. Defaults to weekday temperatures if they are included.
Deadband Temperature (C)	number	No	Taken from HPXML file, or 1	Size of temperature deadband in degC. Can also be specified in the schedule
setpoint_ramp_rate	number	No	0.2 for ASHP Heater, otherwise None	Maximum ramp rate of thermostat setpoint, in degC/min
show_eir_shr	boolean	No	FALSE	If True, show EIR and SHR in results for all time steps. If False, they will be set to 0 when the equipment is off
Number of Speeds (-)	int	No	Taken from HPXML file, or 1	Number of speeds. Options are 1 (single speed), 2 (double speed), 4 (variable speed), or 10 (mini-split HP only)
Rated Efficiency	string	Only if Number of Speeds > 1	Taken from HPXML file, or None	Rated SEER or HSPF. Used to determine the capacity, EIR, and SHR ratios of each speed
Supplemental Heater Capacity (W)	number	Only for ASHP Heater		ASHP Heater supplemental heater capacity
Supplemental Heater EIR (-)	number	No	1	ASHP Heater supplemental heater energy input ratio
Supplemental Heater Cut-in Temperature (C)	number	No	None	Temperature to shut off heat pump for ASHP Heater

Water Heating

OCHRE includes models for the following Water Heating equipment:

End Use	Equipment Class	Equipment Name
Water Heating	ElectricResistanceWaterHeater	Electric Tank Water Heater
Water Heating	GasWaterHeater	Gas Tank Water Heater
Water Heating	HeatPumpWaterHeater	Heat Pump Water Heater
Water Heating	TanklessWaterHeater	Tankless Water Heater
Water Heating	GasTanklessWaterHeater	Gas Tankless Water Heater

The table below shows the required and optional equipment-specific arguments for Water Heating equipment.

Argument Name	Argument Type	Required?	Default Value	Description
use_ideal_capacity	boolean	No	True if time_res >= 5 minutes	If True, OCHRE sets water heater capacity to meet the setpoint. If False, OCHRE uses thermostat deadband control
water_nodes	int	No	12 if Heat Pump Water Heater, 1 if Tankless Water Heater, otherwise 2	Number of nodes in water tank model
Capacity (W)	number	No	4500	Water heater capacity
Efficiency (-)	number	No	1	Water heater efficiency (or supplemental heater efficiency for HPWH)
Setpoint Temperature (C)	number	Yes	Taken from HPXML file, or 51.67	Water heater setpoint temperature. Can also be set in schedule
Deadband Temperature (C)	number	No	8.17 for Heat Pump Water Heater, otherwise 5.56	Water heater deadband size. Can also be set in schedule
Max Tank Temperature (C)	number	No	60	Maximum water tank temperature
Mixed Delivery Temperature (C)	number	No	40.56	Hot water temperature for tempered water draws (sinks, showers, and baths)
Initial Temperature (C)	number	No	Setpoint temperature - 10% of deadband temperature	Initial temperature of the entire tank (before initialization routine)
Max Setpoint Ramp Rate (C/min)	number	No	None	Maximum rate of change for setpoint temperature
Tank Volume (L)	number	Yes	Taken from HPXML file	Size of water tank, in L
Tank Height (m)	number	Yes	Taken from HPXML file	Height of water tank, used to determine surface area
Heat Transfer Coefficient (W/m^2/K) or UA (W/K)	number	Yes	Taken from HPXML file	Heat transfer coefficient of water tank
hp_only_mode	boolean	No	FALSE	Disable supplemental heater for HPWH
HPWH COP (-)	number	Only for Heat Pump Water Heater		Coefficient of Performance for HPWH
HPWH Capacity (W) or HPWH Power (W)	number	No	500 (for HPWH Power)	Capacity or rated power for HPWH
HPWH Parasitics (W)	number	No	1	Parasitic power for HPWH
HPWH Fan Power (W)	number	No	35	Fan power for HPWH
HPWH SHR (-)	number	No	0.88	Sensible heat ratio for HPWH
HPWH Interaction Factor (-)	number	No	0.75 if in Indoor Zone else 1	Fraction of HPWH sensible gains to envelope
HPWH Wall Interaction Factor (-)	number	No	0.5	Fraction of HPWH sensible gains to wall boundary, remainder goes to zone
Energy Factor (-)	number	Only for Gas Water Heater	Taken from HPXML file	Water heater energy factor (EF) for getting skin loss fraction
Parasitic Power (W)	number	Only for Gas Tankless Water Heater	Taken from HPXML file	Parasitic power for Gas Tankless Water Heater

Electric Vehicle

OCHRE includes an electric vehicle (EV) model. The equipment name can be “EV” or “Electric Vehicle”. The table below shows the required and optional equipment-specific arguments for EVs.

Argument Name	Argument Type	Required?	Default Value	Description
vehicle_type	string	Yes	BEV, if taken from HPXML file	EV vehicle type, options are “PHEV” or “BEV”
charging_level	string	Yes	Level 2, if taken from HPXML file	EV charging type, options are “Level 1” or “Level 2”
capacity or mileage	number	Yes	100 miles if HPXML Annual EV Energy < 1500 kWh, otherwise 250 miles	EV battery capacity in kWh or mileage in miles
enable_part_load	boolean	No	True if charging_level = Level 2	Allows EV to charge at partial load
ambient_ev_temp	number	No	Taken from schedule, or 20 C	Ambient temperature used to estimate EV usage per day
equipment_event_file	string	No	Default file based on vehicle_type and mileage	File for EV event scenarios

Battery

OCHRE includes a battery model. The table below shows the required and optional equipment-specific arguments for batteries.

Argument Name	Argument Type	Required?	Default Value	Description
capacity_kwh	number	No	10	Nominal energy capacity of battery, in kWh
capacity	number	No	5	Max power of battery, in kW
efficiency	number	No	0.98	Battery Discharging Efficiency, unitless
efficiency_charge	number	No	0.98	Battery Charging Efficiency, unitless
efficiency_inverter	number	No	0.97	Inverter Efficiency, unitless
efficiency_type	string	No	“advanced”	Efficiency calculation option. Options are “advanced”, “constant”, “curve”, and “quadratic”
soc_init	number	No	0.5	Initial State of Charge, unitless
soc_max	number	No	0.95	Maximum SOC, unitless
soc_min	number	No	0.15	Minimum SOC, unitless
enable_degradation	boolean	No	TRUE	If True, runs an energy capacity degradation model daily
initial_voltage	number	No	50.4	Initial open circuit voltage, in V. Used for advanced efficiency and degradation models.
v_cell	number	No	3.6	Cell voltage, in V. Used for advanced efficiency and degradation models.
ah_cell	number	No	70	Cell capacity, in Ah. Used for advanced efficiency and degradation models.
r_cell	number	No	0	Cell resistance, in ohm. Used for advanced efficiency and degradation models.
charge_start_hour	number	No	9	Schedule: Charge Start Time, in hour of day
discharge_start_hour	number	No	16	Schedule: Discharge Start Time, in hour of day
charge_power	number	No	1	Schedule: Charge Power, in kW
discharge_power	number	No	1	Schedule: Discharge Power, in kW
charge_from_solar	number	No	0	Self-Consumption: Force Charge from Solar, in boolean
import_limit	number	No	0	Self-Consumption: Grid Import Limit, in kW
export_limit	number	No	0	Self-Consumption: Grid Export Limit, in kW
enable_thermal_model	boolean	No	True only if zone_name or envelope is specified	If True, creates 1R-1C thermal model for battery temperature. Temperature is used in degradation model
thermal_r	number	No	0.5	Thermal Resistance, in K/W
thermal_c	number	No	90000	Thermal Mass, in J/K
Initial Battery Temperature (C)	number	No	zone temperature

Solar PV

OCHRE includes a solar PV model. The table below shows the required and optional equipment-specific arguments for PV.

Argument Name	Argument Type	Required?	Default Value	Description
capacity	number	Only when running SAM		PV panel capacity, in kW
tilt	number	No	Taken from HPXML roof pitch	Tilt angle from horizontal, in degrees. Used for SAM
azimuth	number	No	Taken from HPXML, south-most facing roof	Azimuth angle from south, in degrees. Used for SAM
inverter_capacity	number	No	PV.capacity	Inverter apparent power capacity, in kVA. Used for SAM
inverter_efficiency	number	No	Use default from SAM	Efficiency of the inverter, unitless. Used for SAM
inverter_priority	string	No	“Var”	PV inverter priority. Options are “Var”, “Watt”, or “CPF” (constant power factor)
inverter_min_pf	number	No	0.8	Inverter minimum power factor, unitless

Gas Generator

OCHRE includes models for the following gas generator equipment:

End Use	Equipment Class	Equipment Name
Gas Generator	GasGenerator	Gas Generator
Gas Generator	GasFuelCell	Gas Fuel Cell

The table below shows the required and optional equipment-specific arguments for gas generators.

Argument Name	Argument Type	Required?	Default Value	Description
capacity	number	No	6	Maximum power, in kW
efficiency	number	No	0.95	Discharging Efficiency, unitless
efficiency_type	string	No	“curve” if GasFuelCell, otherwise “constant”	Efficiency calculation option. Options are “constant”, “curve”, and “quadratic”
control_type	string	No	“Off”	Control option. Options are “Off”, “Schedule”, and “Self-Consumption”
ramp_rate	number	No	0.1	Max ramp rate, in kW/min
charge_start_hour	number	No	9	Schedule: Charge Start Hour
discharge_start_hour	number	No	16	Schedule: Discharge Start Hour
charge_power	number	No	1	Schedule: Charge Power, in kW
discharge_power	number	No	1	Schedule: Discharge Power, in kW
import_limit	number	No	0	Self-Consumption: Grid Import Limit, in kW
export_limit	number	No	0	Self-Consumption: Grid Export Limit, in kW

Other Equipment

OCHRE includes basic models for other loads, including appliances, lighting, and miscellaneous electric and gas loads:

End Use	Equipment Class	Equipment Name
Lighting	LightingLoad	Lighting
Lighting	LightingLoad	Exterior Lighting
Lighting	LightingLoad	Basement Lighting
Lighting	LightingLoad	Garage Lighting
Other	ScheduledLoad	Clothes Washer
Other	ScheduledLoad	Clothes Dryer
Other	ScheduledLoad	Dishwasher
Other	ScheduledLoad	Refrigerator
Other	ScheduledLoad	Cooking Range
Other	ScheduledLoad	MELs
Other	ScheduledLoad	TV
Other	ScheduledLoad	Well Pump
Other	ScheduledLoad	Gas Grill
Other	ScheduledLoad	Gas Fireplace
Other	ScheduledLoad	Gas Lighting
Other	ScheduledLoad	Pool Pump
Other	ScheduledLoad	Pool Heater
Other	ScheduledLoad	Hot Tub Pump
Other	ScheduledLoad	Hot Tub Heater
Other	ScheduledLoad	Ceiling Fan
Other	ScheduledLoad	Ventilation Fan
EV	ScheduledEV	Scheduled EV

The table below shows the required and optional equipment-specific arguments for other equipment.

Argument Name	Argument Type	Required?	Default Value	Description
Convective Gain Fraction (-)	number	No	Taken from HPXML file, or 0	Fraction of power consumption that is dissipated through convection into zone
Radiative Gain Fraction (-)	number	No	Taken from HPXML file, or 0	Fraction of power consumption that is dissipated through radiation into zone
Latent Gain Fraction (-)	number	No	Taken from HPXML file, or 0	Fraction of power consumption that is dissipated as latent heat into zone