Impact of Vacuum-Drying on Efficiency of Hardwood Products

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Impact of Vacuum-Drying on Efficiency of Hardwood Products ( impact-vacuum-drying-efficiency-hardwood-products )

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APPENDIX E. VARIABLES USED TO OBTAIN VACUUM (WITHOUT AIR DRYING) DRYING COSTS. FINANCE VARIABLES VALUES 20 INFORMATION SOURCE Direct investments (total costs) $228,980.00 $6,659,700.00 $1,100.00 Depreciation period for direct investments (years) 10 3 OTHER FINANCE VARIABLES(If applicable) Land area (ft2) $29,925 $75,000 $25,000 9 4 1.71 CAPACITY VARIABLES $1,275 0.3 4000 Buildings, sheds, etc. Kiln (including boiler, vacuum pump, material handling, auxiliary equipment) Stickers Buildings, sheds, etc. Kiln, auxiliary equipment (including boiler) Stickers* Maintenance of kilns and boiler ($). Area for buildings, kiln, boiler, etc. ($/Acre) Land value ($/Acre) Annual interest rate (%) Tax rate to be applied to the total of taxable values (%) Insurance rate applied to the total of insurable values (%) Average price of lumber ($/MBF) Average drying degrades based on lumber value (percent as decimal) Average daily volume of lumber on yard and in kilns on any given day (MBF) Total capacity of kilns Number of Kilns Operational year Annual throughput (MBF/yr) Run times (hrs) Kiln cycles per year Average length of kiln run (include loading and unloading time) (days) Final Drying time (hrs) Volume air dry stock (MBF) Maximum drying temperature (F) Minimum drying temperature (F) 266970 22 365 12000 24 46 8 Plant D Company A Plant D McMillen and Wenegert 1978 McMillen and Wenegert 1978 McMillen and Wenegert 1978 Fortin 2010 Plant D ESTIMATED ESTIMATED ESTIMATED ESTIMATED Hardwood Report Market Plant C Plant C Company A ESTIMATED Plant D Company A ESTIMATED ESTIMATED ESTIMATED Company A Plant D Plant D Plant D 192 8250 180 105 156

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