30 lines
1.1 KiB
JSON
30 lines
1.1 KiB
JSON
{
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"title": "Storm Lake Winter Propane Survival Calculator",
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"author": "Barbara Cintron",
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"location": "Storm Lake, Iowa (Zone 4b)",
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"version": "1.0",
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"citation": {
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"heating_base_temp_F": 65,
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"stormlake_avg_extreme_min_F": -25,
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"propane_energy_content_Btu_per_gallon": 91500,
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"typical_household_daily_consumption_gallons": {
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"mild": 1.2,
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"moderate": 2.8,
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"severe": 5.4
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},
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"blizzard_duration_hours": 72,
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"design_outdoor_temp_F": -30,
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"indoor_setpoint_F": 68,
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"house_envelope_factor": 0.85,
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"notes": "Consumption rates derived from Buena Vista County Cooperative Extension 2024 Winter Energy Survey, adjusted for Zone 4b extremes. House envelope factor accounts for typical 1970s ranch construction insulation degradation."
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},
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"formula": {
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"description": "Propane required = (consumption_rate_gal/day × duration_days) / house_efficiency",
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"variables": {
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"consumption_rate_gal_day": "Function of delta-T between indoor setpoint and outdoor temp",
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"duration_days": "Blizzard event length",
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"house_efficiency": "Envelope integrity multiplier"
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}
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}
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}
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