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49 lines
3 KiB
Python
49 lines
3 KiB
Python
# Assumes that the average efficiency of an air source heat pump is 250%, taking the median of the 200-400% range,
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# which is often quoted as a sensible efficiency range for air source heat pumps.
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PESSIMISTIC_ASHP_EFFICIENCY = 200
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AVERAGE_ASHP_EFFICIENCY = 250
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# Conservative estimate of the proportion of electricity that will be consumed, whereas the rest will
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# be exported
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SOLAR_CONSUMPTION_PROPORTION = 0.5
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# Typically, each solar panel takes up around 3.4 m2 of roof space under RdSAP. This was been verified in Elmhurst
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RDSAP_AREA_PER_PANEL = 3.4
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DESCRIPTIONS_TO_FUEL_TYPES = {
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"Air source heat pump, radiators, electric": {
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"fuel": "Electricity", "cop": AVERAGE_ASHP_EFFICIENCY / 100
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},
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"Boiler and radiators, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
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'Electric storage heaters': {"fuel": 'Electricity', "cop": 1},
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"Electric immersion, off-peak": {"fuel": 'Electricity', "cop": 1},
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"Electric storage heaters, radiators": {"fuel": 'Electricity', "cop": 1},
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"Room heaters, electric": {"fuel": 'Electricity', "cop": 1},
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"Electric immersion, standard tariff": {"fuel": 'Electricity', "cop": 1},
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"Portable electric heaters assumed for most rooms": {"fuel": 'Electricity', "cop": 1},
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"Boiler and radiators, LPG": {"fuel": 'LPG', "cop": 0.85},
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"Room heaters, dual fuel (mineral and wood)": {"fuel": 'Wood Logs', "cop": 1},
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"Room heaters, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
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"Warm air, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
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"Boiler, mains gas": {"fuel": 'Natural Gas', "cop": 0.85},
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"Gas multipoint": {"fuel": "Natural Gas", "cop": 0.85},
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"Warm air, Electricaire": {"fuel": "Electricity", "cop": 1},
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"Gas boiler/circulator": {"fuel": "Natural Gas", "cop": 0.85},
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"Boiler and underfloor heating, mains gas": {"fuel": "Natural Gas", "cop": 0.85},
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"No system present: electric heaters assumed": {"fuel": "Electricity", "cop": 1},
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"Electric instantaneous at point of use": {"fuel": "Electricity", "cop": 1},
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"Boiler and radiators, oil": {"fuel": "Oil", "cop": 0.85},
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"Electric storage heaters, Electric storage heaters": {"fuel": "Electricity", "cop": 1},
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"Boiler and radiators, electric": {"fuel": "Electricity", "cop": 0.85},
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"Gas boiler/circulator, no cylinder thermostat": {"fuel": "Natural Gas", "cop": 0.85},
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"Boiler and radiators, dual fuel (mineral and wood)": {"fuel": "Wood Logs", "cop": 0.85},
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"Electric immersion, standard tariff, plus solar": {"fuel": "Electricity + Solar Thermal", "cop": 1},
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"From main system, flue gas heat recovery": {"fuel": "Natural Gas", "cop": 0.85},
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"Electric underfloor heating": {"fuel": "Electricity", "cop": 1},
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"No system present: electric immersion assumed": {"fuel": "Electricity", "cop": 1},
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"Air source heat pump, underfloor, electric": {
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"fuel": "Electricity", "cop": AVERAGE_ASHP_EFFICIENCY / 100
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},
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"Gas instantaneous at point of use": {"fuel": "Natural Gas", "cop": 0.85},
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"Room heaters, wood logs": {"fuel": "Wood Logs", "cop": 1},
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}
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