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Three instruments for data collection were created. The first data collection instrument was used for obtaining information about drying quality, and it was addressed to the company that sells and manufactures vacuum equipment. The data collection instrument was composed of 6 parts. The questions were as follows: How does conventional drying/vacuum drying affect the following characteristics? 1. Color 2. Warp 3. Moisture Content uniformity 4. Drying stresses 5. Drying degrade 6. Internal, surface, and end-checks The second data collection instruments were made to collect information about drying times, and costs for conventional and vacuum drying from Companies A and B and from the three flooring manufactures that use conventional drying. These two data collection instruments were based on literature reviewed in section 4.8, to identify the most appropriate cost information that should be collected and used to calculate and to compare drying costs According to Boulet and Ouimet (1968), MacMillen and Wengert (1978), Fortin (2010), Reeb (2011), Redman (2011) Engalichev and Eddy (1990), Holmes and Bilek (1983), Govett et al (1996 and 2006), for a cost accounting approach, the fixed costs to be included are: buildings, kiln, stickers, pile roofs, pile bases, bolsters, depreciation, quantity of wood dried annually, storage sheds for stickers, fences, lighting systems, drainage systems, sprinkler systems, air drying area (include space between the piles), land value, taxable values, insurable values, and energy consumption. Energy consumption includes energy to heat wood, energy to heat water, to vaporize water, and BTU’s per charge. Variable costs to be included are: maintenance, labor, and forklift costs. Other important costs to include in the data collection instrument are the 41PDF Image | Impact of Vacuum-Drying on Efficiency of Hardwood Products
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