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Continuation Table 6 Forklift wage ($/yr) Lumber graders ($/yr) Wage for kiln operator and yard supervisor ($/yr) Fuel consumption (hog waste) (tons/day) Fuel cost ($/ton) Annual electrical usage attributed to drying (kWh/yr) Electrical cost ($/kWh) Initial MC (%) Final MC (%) Raw Material Cost ($/MBF) Thermal loss (%) Wood basic density (Kg) Specific heat of hardwood (KJ/(Kg*oC) Specific heat of water (KJ/(Kg*oC) Heat of Vaporization (MJ/kg) Specific gravity at FSP Water density (kg/m3) Energy to heat wood (KJ) Energy to heat water (KJ) Energy to vaporize Water (KJ) Total BTUs/charge used for drying Total tons/charge used for drying The 3rd data collection instrument was used to collect information for vacuum drying, and was similar to Table 6; however, in the operational variables, it included the following: vacuum pump rating, vacuum pump usage, condenser fan rating, and condenser fan usage. The data collection instrument for vacuum drying was e-mailed to the company that sells vacuum drying equipment and to the company that uses vacuum equipment. The data OPERATIONAL VARIABLES Values ENERGY COSTS Previews Energy Calculations 44PDF Image | Impact of Vacuum-Drying on Efficiency of Hardwood Products
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