Building Demand SIA 380

Icon	Name	ID	Category	Subcategory
	Building demand SIA 380	Sia380	[hive]	Demand

Description

Heating, cooling and electricity demand calculation based on SIA 380

Inputs

Name	ID	Description	Type
Room properties	RoomProperties	Room properties as json. Could be from SIA 2024, or custom. It needs to follow the hive sia2024-json syntax	json
Room schedules	RoomSchedules	Room schedules for occupancy, devices and lighting as json. Could be from SIA 2024, or custom. It needs to follow the hive sia2024-schedules-json syntax	json
Floor area	FloorArea	Floor area of the zone in m^2.	float
Air temperature	T_e	Hourly ambient air temperature in °C.	float
Setpoints upper bounds	SetpointsUB	Hourly room temperature setpoints in °C (upper bound).	float
Setpoints lower bounds	SetpointsLB	Hourly room temperature setpoints in °C (lower bound).	float
Envelope surface areas	SurfaceAreas	Envelope surface areas of all external room surfaces in m^2.	float
Envelope surface types	SurfaceTypes	Envelope surface types of all external room surfaces. Either 'opaque' or 'transp'.	string
Surface irradiation	Q_s_tree	Surface irradiation per transparent surface. Grasshopper tree, with each branch representing a transparent surface and containing 8760 timeseries of solar irradiation in Wh.	generic
Surface irradiation unobstructed	Q_s_tree_unobstructed	Unobstructed surface irradiation per surface. This tree is used, if the obstructed data (parameter above) is null. Grasshopper tree, same as parameter above.	generic
G value	gValue	G value of windows	float
G value with sunscreen	gValueTotal	G value total including sunscreen ('Sonnenschutz') of windows	float
Setpoint sunscreen	SetpointSunscreen	Shading setpoint for activating sunscreen of windows, in W/m^2	float
Run obstructed solar simulation?	RunObstructed?	Boolean to indicate if an obstructed solar simulation is conducted. True if yes.	boolean
Run hourly?	RunHourly?	Boolean to indicate if to run monthly or hourly simulations. True if hourly.	boolean
Use adaptive comfort?	UseAdaptiveComfort?	Boolean to indicate if adaptive comfort should be used instead of fixed setpoints. True if yes. Defaults to yes if setpoints_ub and setpoints_lb are null.	boolean
Use natural ventilation?	UseNaturalVentilation?	Boolean to indicate if natural ventilation should be considered (True) or not (False).	boolean
Use fixed time constant?	UseFixedTimeConstant?	Boolean to indicate if the fixed time constant from SIA 2024 should be used (True) or dynamically calculated based on capacities (False).	boolean

Outputs

Name	ID	Description	Type
Heating demand	Q_Heat	Heating loads of a zone in kWh.	float
Domestic hot water demand	Q_dhw	Domestic hot water demands of a zone in kWh.	float
Cooling demand	Q_Cool	Cooling loads of a zone in kWh.	float
Electricity demand	Q_Elec	Electricity loads of a zone in kWh.	float
Transmission heat losses	Q_T	Transmission heat losses of a zone in kWh.	float
Ventilation heat losses	Q_V	Ventilation heat losses of a zone in kWh.	float
Internal gains	Q_i	Internal gains of a zone in kWh.	float
Solar gains	Q_s	Solar gains of a zone in kWh.	float
Transmission heat losses of opaque surfaces	Q_T_opaque	Transmission heat losses through opaque envelope surfaces in kWh	float
Transmission heat losses of transparent surfaces	Q_T_transp	Transmission heat losses through transparent envelope surfaces in kWh	float
Solar gains per transparent surface	Q_s_per_window	Solar gains per transparent surface (window). Grasshopper tree with each branch representing one window and containing a timeseries of irradiation values in kWh.	float