from ....General.Auxiliary_General.schedule_hour_simplified import schedule_hour_simplified
from ....General.Auxiliary_General.combustion_mass_flows import combustion_mass_flows
from ....General.Auxiliary_General.stream_industry import stream_industry
from ....KB_General.medium import Medium
from ....utilities.kb import KB
[docs]class Burner:
"""Create Burner Object
From main characteristics of a burner, adding to its characterization, it are estimated the inflow/supply/excess
heat streams.
Attributes
----------
id : int
Equipment ID
object_type : str
DEFAULT = "equipment"
streams : list
Data of the streams associated to this equipment
fuel_type : str
Fuel type
supply_capacity : float
Equipment supply capacity [kW]
global_conversion_efficiency : float
Equipment efficiency []
equipment_sub_type : str
Equipment designation
Parameters
----------
in_var : dict
Equipment characterization data, with the following keys:
id : int
Equipment ID
fuel_type : str
Fuel type
object_type : str
Equipment type: "process", "boiler","chp", "burner", "cooling_equipment", "stream"
global_conversion_efficiency : float
Conversion efficiency []
supply_capacity : float
Equipment supply capacity [kW]
processes : list
List of processes objects associated to the equipment
saturday_on : int
If it is available on Saturday []; 1 (yes) or 0 (no)
sunday_on : int
If it is available on Sunday []; 1 (yes) or 0 (no)
shutdown_periods : list
List with lists of periods of days it is not available [day]; e.g. [[130,140],[289,299]]
daily_periods : list
List with lists of hourly periods it is available [h]; e.g. [[8,12],[15,19]]
burner_equipment_sub_type : str
Options: "indirect_burner" or "direct_burner"
burner_excess_heat_supply_temperature : float
Burner recoverable excess heat temperature [ºC]
burner_excess_heat_flowrate : float
Burner recoverable excess heat mass flowrate [kg/h]
kb : dict
Knowledge Base data
"""
def __init__(self, in_var, kb: KB):
############################################################################################
# KB
medium = Medium(kb)
# Defined Vars
self.object_type = 'equipment'
self.streams = []
inflow_fluid = 'air'
inflow_supply_temperature = 20 # ambient temperature
inflow_target_temperature = 80 # [ºC]
############################################################################################
# INPUT
self.id = in_var['id'] # equipment ID
self.equipment_sub_type = in_var['burner_equipment_sub_type'] # direct_burner or indirect_burner
self.fuel_type = in_var['fuel_type'] # Fuel type (Natural gas, Fuel oil, Biomass)
self.global_conversion_efficiency = in_var['global_conversion_efficiency']
self.supply_capacity = in_var['supply_capacity']
processes = in_var['processes']
excess_heat_supply_temperature = in_var['burner_excess_heat_supply_temperature']
excess_heat_flowrate = in_var['burner_excess_heat_flowrate']
saturday_on = in_var['saturday_on']
sunday_on = in_var['sunday_on']
shutdown_periods = in_var['shutdown_periods'] # e.g: [[59,74],[152,172],[362,365]]
daily_periods = in_var['daily_periods'] # e.g: [[8,12],[15,19]]
if self.global_conversion_efficiency is None:
self.global_conversion_efficiency = 0.80
if self.equipment_sub_type == 'direct_burner':
supply_fluid = 'flue_gas' # Excess heat fluid type
excess_heat_target_temperature = 120
else:
supply_fluid = 'air' # Excess heat fluid type
excess_heat_target_temperature = 25
############################################################################################
# COMPUTE
# schedule
schedule = schedule_hour_simplified(daily_periods,saturday_on,sunday_on,shutdown_periods)
# supply capacity
if self.supply_capacity is None:
self.total_yearly_supply_capacity = 0
for process in processes:
for stream in process['streams']:
if stream['stream_type'] != 'outflow':
self.total_yearly_supply_capacity += stream['capacity'] * sum(stream['schedule'])
self.supply_capacity = self.total_yearly_supply_capacity / (sum(schedule))
# fuel consumption
fuel_consumption, m_air, m_flue_gas = combustion_mass_flows(kb,
self.supply_capacity,
self.global_conversion_efficiency,
self.fuel_type)
# inflow stream
inflow_flowrate = m_air
inflow_fluid_cp = medium.cp(inflow_fluid, (inflow_supply_temperature + inflow_target_temperature) / 2)
inflow_capacity = inflow_flowrate * (inflow_target_temperature - inflow_supply_temperature) \
* inflow_fluid_cp / 3600 # [kW]
# excess heat stream
flue_gas_cp = medium.cp(supply_fluid, excess_heat_supply_temperature)
if excess_heat_target_temperature > excess_heat_supply_temperature:
excess_heat_supply_capacity = 0
else:
excess_heat_supply_capacity = excess_heat_flowrate/3600 * abs(excess_heat_supply_temperature - excess_heat_target_temperature) * flue_gas_cp
# GET STREAMS
# air inflow
self.streams.append(stream_industry('burner air inflow',
self.id,
'inflow',
inflow_fluid,
inflow_supply_temperature,
inflow_target_temperature,
inflow_flowrate,
inflow_capacity,
schedule,
stream_id=1,
fuel=self.fuel_type,
eff_equipment=1
))
if excess_heat_target_temperature < excess_heat_supply_temperature:
self.streams.append(stream_industry('burner excess heat',
self.id,
'excess_heat',
supply_fluid,
excess_heat_supply_temperature,
excess_heat_target_temperature,
excess_heat_flowrate,
excess_heat_supply_capacity,
schedule,
stream_id=2,
fuel="none",
eff_equipment=None
))