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fraxle
2026-07-26 16:52:41 +01:00
parent dbadb1d410
commit 709e51e1fa
2 changed files with 35 additions and 24 deletions
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assets/js/utils.js
+12 -6
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@@ -215,6 +215,12 @@ export function burnLabel(mins) {
// roofGlazing - relative HORIZONTAL glass area (rooflights / Heki hatches /
// panoramic glass roof). Gains from these peak at high sun,
// which is exactly when the vertical-glass term is tailing off.
// orientFactor - fraction of the vertical glazing actually facing the sun,
// same idea as BUILDING_TYPES.orientFactor. A parked vehicle
// is NOT aimed at the sun: a car has glass on all four sides
// so a decent share always catches it (0.65), whereas a
// motorhome's glazing is dominated by one big windscreen
// pointing wherever it happened to park (0.50).
// bodyU - effective body/panel conductance into the cabin. Cars are
// thin metal/glass boxes; motorhomes/caravans have insulated
// sandwich panels, commonly around 25-35 mm thick.
@@ -234,12 +240,12 @@ export function burnLabel(mins) {
// internalGain - small living-space warmth boost when closed up.
// -------------------------------------------------------------------
export const VEHICLE_TYPES = {
car: { name: 'Car / Hatchback', albedo: 0.25, glazingArea: 1.00, roofGlazing: 0.00, bodyU: 4.0, hCabinLoss: 11.0, ventMult: 4.0, lagHours: 0.5, retainedWarmth: false, internalGain: 0.0 },
mpv: { name: 'MPV / People Carrier', albedo: 0.25, glazingArea: 1.30, roofGlazing: 0.02, bodyU: 4.0, hCabinLoss: 11.5, ventMult: 4.0, lagHours: 0.6, retainedWarmth: false, internalGain: 0.0 },
suv: { name: 'SUV / 4x4', albedo: 0.22, glazingArea: 1.10, roofGlazing: 0.02, bodyU: 3.8, hCabinLoss: 11.0, ventMult: 4.0, lagHours: 0.6, retainedWarmth: false, internalGain: 0.0 },
truck: { name: 'Truck / HGV Cab', albedo: 0.30, glazingArea: 1.20, roofGlazing: 0.00, bodyU: 3.5, hCabinLoss: 10.5, ventMult: 4.0, lagHours: 0.7, retainedWarmth: false, internalGain: 0.0 },
motorhome: { name: 'Motorhome / Campervan', albedo: 0.55, glazingArea: 0.85, roofGlazing: 0.06, bodyU: 0.9, hCabinLoss: 6.5, ventMult: 2.5, lagHours: 1.5, retainedWarmth: true, internalGain: 1.2 },
caravan: { name: 'Caravan (towed)', albedo: 0.60, glazingArea: 0.55, roofGlazing: 0.07, bodyU: 0.8, hCabinLoss: 6.2, ventMult: 2.4, lagHours: 1.7, retainedWarmth: true, internalGain: 1.2 },
car: { name: 'Car / Hatchback', albedo: 0.25, glazingArea: 1.00, roofGlazing: 0.00, orientFactor: 0.65, bodyU: 4.0, hCabinLoss: 11.5, ventMult: 4.0, lagHours: 0.5, retainedWarmth: false, internalGain: 0.0 },
mpv: { name: 'MPV / People Carrier', albedo: 0.25, glazingArea: 1.30, roofGlazing: 0.02, orientFactor: 0.65, bodyU: 4.0, hCabinLoss: 13.0, ventMult: 4.0, lagHours: 0.6, retainedWarmth: false, internalGain: 0.0 },
suv: { name: 'SUV / 4x4', albedo: 0.22, glazingArea: 1.10, roofGlazing: 0.02, orientFactor: 0.65, bodyU: 3.8, hCabinLoss: 12.0, ventMult: 4.0, lagHours: 0.6, retainedWarmth: false, internalGain: 0.0 },
truck: { name: 'Truck / HGV Cab', albedo: 0.30, glazingArea: 1.20, roofGlazing: 0.00, orientFactor: 0.60, bodyU: 3.5, hCabinLoss: 11.0, ventMult: 4.0, lagHours: 0.7, retainedWarmth: false, internalGain: 0.0 },
motorhome: { name: 'Motorhome / Campervan', albedo: 0.55, glazingArea: 0.85, roofGlazing: 0.06, orientFactor: 0.50, bodyU: 0.9, hCabinLoss: 7.0, ventMult: 2.5, lagHours: 1.5, retainedWarmth: true, internalGain: 1.2 },
caravan: { name: 'Caravan (towed)', albedo: 0.60, glazingArea: 0.55, roofGlazing: 0.07, orientFactor: 0.55, bodyU: 0.8, hCabinLoss: 6.5, ventMult: 2.4, lagHours: 1.7, retainedWarmth: true, internalGain: 1.2 },
};
// -------------------------------------------------------------------