Forestry electric vehicle energy routing and mapping GIS tool

Figures & data

Figure 1. The workflow for the calculation of minimum energy transportation cost using FEVER.

Table 1. Truck input parameters for the Edison Model R-500 – Tri-drive truck.

Truck #	Truck Name	Weight (kg)	Tare (kg)	Load (kg)	Powertrain Efficiency (%)	Regenerative Efficiency (%)	Frontal Area (m^2)
1	R-500 - Tandem	36287	16287	20000	75	70	7.43
2	R-500 - Tandem	16287	16287	0	75	70	4.65

Figure 2. The McDonald Dunn research forest road networks, elevation contours, hauling origins and destinations.

Figure 3. A multidirectional graph demonstrating the usage of alternate routes based on if a chip truck is loaded or unloaded. Routing is based on Figure 1 and edge weight energy calculations are based on Eq. 2(2) $\mathit{s}.\mathit{t}.\mathit{\hspace{0.17em}}\left(\mathrm{\forall e}\mathit{\hspace{0.17em}}=\mathit{\hspace{0.17em}}\left(\mathit{u},\mathit{\hspace{0.17em}}\mathit{v}\right)\mathit{\hspace{0.17em}}\in \mathit{\hspace{0.17em}}\mathit{E}\right),\mathit{\hspace{0.17em}}{x}_v\mathit{\hspace{0.17em}}\le \mathit{\hspace{0.17em}}{x}_u+\mathrm{\ell }\left(\mathit{e}\right),\mathit{\hspace{0.17em}}\mathit{xs}\mathit{\hspace{0.17em}}=\mathit{\hspace{0.17em}}0$(2) .

Table 2. Routing summary data*.

Start Location Node	Destination Node	Avg Travel Cost (MJ)	Avg Travel Cost (KJ/km)	Min Travel Cost (MJ)	Max Travel Cost (MJ)	Avg Travel Time (Min)	Avg Travel Distance (Km)
101	101	162.5	8,953	0.1	349.0	25.4	19.0
190	190	135.0	6,151	1.2	269.7	25.2	20.8
101	190	96.4	4,222	−10.2	239.0	25.3	20.0
190	101	201.4	10,632	72	370.7	25.2	19.9

*Combined average results from each start location node to every harvest polygon and then to the destination node. Min and Max travel costs are the lowest and highest cost single trip and can be used to identify the maximum energy requirement to service an area.

Figure 4. Harvest polygons colored based on total transportation cost (megajoules) for an empty R-500 - tandem traveling from the Lewisburg Trailhead (node 101) to the harvest polygon and then traveling back loaded to the Lewisburg Trailhead (node 101).

Figure 5. Harvest polygons colored based on total transportation cost (megajoules) for an empty R-500 - tandem traveling from the Peavy Arboretum (node 190) to the harvest polygon and then traveling back loaded to the Peavy Arboretum (node 190).

Figure 6. Harvest polygons colored based on total transportation cost (megajoules) for an empty R-500 - tandem traveling from the Lewisburg Trailhead (node 101) to the harvest polygon and then traveling back loaded to the Peavy Arboretum (node 190).

Figure 7. Harvest polygons colored based on total transportation cost (megajoules) for an empty R-500 - tandem traveling from the Peavy Arboretum (node 190) to the harvest polygon and then traveling back loaded to the Lewisburg Trailhead (node 101).

Figure 8. Harvest polygons colored based on total transportation cost as a function of distance (Kj/km) for an empty R-500 - tandem traveling from the Lewisburg Trailhead (node 101) to the harvest polygon and then traveling back loaded to the Lewisburg Trailhead (node 101).

Figure 9. Harvest polygons colored based on total transportation cost as a function of distance (Kj/km) for an empty R-500 - tandem traveling from the Peavy Arboretum (node 190) to the harvest polygon and then traveling back loaded to the Peavy Arboretum (node 190).

Figure 10. Forest roads colored based on the number of trucks that cross each road edge for every harvest landing on the trips from node 101 to node 101.