mirror of
https://github.com/Hestia-Homes/Model.git
synced 2026-06-08 11:17:27 +00:00
67 lines
3.8 KiB
Python
67 lines
3.8 KiB
Python
# We assume that the ASHP efficiency is 280%, which is the minimum that Cotswolds Energy Group achieves, as
|
|
# they target this
|
|
PESSIMISTIC_ASHP_EFFICIENCY = 200
|
|
AVERAGE_ASHP_EFFICIENCY = 280
|
|
|
|
# Conservative estimate of the proportion of electricity that will be consumed, whereas the rest will
|
|
# be exported. These are averages based on Google research. E.g
|
|
# https://www.nea.org.uk/who-we-are/innovation-technical-evaluation/solarpv/solarpv-batteries
|
|
SOLAR_CONSUMPTION_PROPORTION = 0.5
|
|
SOLAR_CONSUMPTION_WITH_BATTERY_PROPORTION = 0.7
|
|
|
|
# Typically, each solar panel takes up around 3.4 m2 of roof space under RdSAP. This was been verified in Elmhurst
|
|
RDSAP_AREA_PER_PANEL = 3.4
|
|
# This is a median based on a sample of properties
|
|
MEDIAN_WATTAGE_TO_AC = 0.965
|
|
MEDIAN_WATTAGE_TO_DC = 0.99
|
|
|
|
SOCIAL_TENURES = ["Rented (social)", "rental (social)"]
|
|
|
|
# Carbon intensity of electricity, as of 16th Jan 2025
|
|
ELECTRICITY_CARBON_INTENSITY = 0.232
|
|
|
|
DESCRIPTIONS_TO_FUEL_TYPES = {
|
|
"Air source heat pump, radiators, electric": {
|
|
"fuel": "Electricity", "cop": AVERAGE_ASHP_EFFICIENCY / 100
|
|
},
|
|
"Boiler and radiators, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
|
|
'Electric storage heaters': {"fuel": 'Electricity', "cop": 1},
|
|
"Electric immersion, off-peak": {"fuel": 'Electricity', "cop": 1},
|
|
"Electric storage heaters, radiators": {"fuel": 'Electricity', "cop": 1},
|
|
"Room heaters, electric": {"fuel": 'Electricity', "cop": 1},
|
|
"Electric immersion, standard tariff": {"fuel": 'Electricity', "cop": 1},
|
|
"Portable electric heaters assumed for most rooms": {"fuel": 'Electricity', "cop": 1},
|
|
"Boiler and radiators, LPG": {"fuel": 'LPG', "cop": 0.85},
|
|
"Room heaters, dual fuel (mineral and wood)": {"fuel": 'Wood Logs', "cop": 1},
|
|
"Room heaters, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
|
|
"Warm air, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
|
|
"Boiler, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
|
|
"Gas multipoint": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"Warm air, Electricaire": {"fuel": "Electricity", "cop": 1},
|
|
"Gas boiler/circulator": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"Boiler and underfloor heating, mains gas": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"No system present: electric heaters assumed": {"fuel": "Electricity", "cop": 1},
|
|
"Electric instantaneous at point of use": {"fuel": "Electricity", "cop": 1},
|
|
"Boiler and radiators, oil": {"fuel": "Oil", "cop": 0.85},
|
|
"Electric storage heaters, Electric storage heaters": {"fuel": "Electricity", "cop": 1},
|
|
"Boiler and radiators, electric": {"fuel": "Electricity", "cop": 0.85},
|
|
"Gas boiler/circulator, no cylinder thermostat": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"Boiler and radiators, dual fuel (mineral and wood)": {"fuel": "Wood Logs", "cop": 0.85},
|
|
"Electric immersion, standard tariff, plus solar": {"fuel": "Electricity + Solar Thermal", "cop": 1},
|
|
"From main system, flue gas heat recovery": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"Electric underfloor heating": {"fuel": "Electricity", "cop": 1},
|
|
"No system present: electric immersion assumed": {"fuel": "Electricity", "cop": 1},
|
|
"Air source heat pump, underfloor, electric": {
|
|
"fuel": "Electricity", "cop": AVERAGE_ASHP_EFFICIENCY / 100
|
|
},
|
|
"Gas instantaneous at point of use": {"fuel": "Natural Gas", "cop": 0.85},
|
|
"Room heaters, wood logs": {"fuel": "Wood Logs", "cop": 1},
|
|
"Boiler and radiators, coal": {"fuel": "Coal", "cop": 0.85},
|
|
"From main system, no cylinderstat": {"fuel": "Natural Gas", "cop": 0.85},
|
|
}
|
|
|
|
# These are the measure types where if there is a ventilation recommendation, we force the inclusion of it
|
|
# if one of these has been recommended.
|
|
measures_needing_ventilation = [
|
|
"internal_wall_insulation", "external_wall_insulation", "cavity_wall_insulation"
|
|
]
|