Как выбрать гостиницу для кошек
14 декабря, 2021
The costs given in this section are presented without supporting detail. They were calculated using the procedures given in [69]. They are "best estimates" given current cost parameters. All costs are given on a $/Mg DM basis for operation of a bioenergy plant consuming 23 dry ton/h (20.9 Mg DM/h). The challenge is to find a way that machine productivity (Mg/h) can be increased.
3.4.3. Total truck cost
The assumed truck cost (tractor and trailer for hauling the two racks) is $630/d for a 24-h workday, which includes ownership plus operating cost, plus labor, but excluding fuel.
Truck cost, excluding fuel, is:
Truck fuel cost for the 25.4 miles (40.6 km) average haul distance is:
(25.4 mi x 2) /4 mi / gal = 12.7 gal x $3.50/ gal = $44.45/ load
$44.45/load / 12.2 dry ton / load = $3.64/dry ton ($4.01/Mg DM)
Total truck cost is ownership and operating plus fuel, that is 4.95 plus 4.01 = $8.96/Mg DM.
3.4.4. Load, unload operations
1. Handling racks at plant: $1.93 (forklift) + $1.02 (backup forklift) = $2.95/dry ton
2. SSL operation: $3.66 (telehandler) + $0.98 (extra trailers) = $4.64/dry ton
3. Rack cost: cost for 230 racks = $1.80/dry ton
4. Storage yard at processing plant: $0.13/dry ton
5. Conveyor entering plant: $0.28/dry ton
(Note: 1 dry ton = 0.907 Mg DM)