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Capacity Chart This chart can be used to compare drying times, annual production, and electric cost for drying a load. Remember, a Nyle kiln is an investment, and should be looked at as such. The return on the investment has to take into account the variances in lumber pricing, the cost of the kiln chamber, and the amount of lumber dried during a year. This chart will prove close to what you will see in a majority of applications. Different types of wood are dried at different rates; we have grouped similar drying woods in this chart to reflect that. As some woods, such as softwoods, need to be dried fast in order to avoid mold and stain, while some hardwoods, such as Oak have to be dried slowly to avoid checks and honeycomb. Group 1—Pine, Fir, Cedar, Poplar, Aspen (softwoods and fast drying hardwoods) Group 2—Cherry, Birch, Maple, Ash, Beech, Walnut, Elm (medium drying hardwoods) Group 3—Oak (Red and White), Rock Elm (slow drying hardwoods) This chart is based on 10¢/kWh electricity, 50oF outside temperature, building sized for the load size listed and as a separate building. This chart assumes electric pre–heat. The drying times are based on drying 4/4 (1”, 25mm) lumber. Thicker lumber generally will take longer to dry, and has to be dried slower. MBF= 1000 Board Feet (2.36m3) Moisture Content Green to 7% Moisture Content 30% to 7% Model Wood Group Load Size BF Annual Production BF Drying Days Drying Cost per MBF Annual Production BF Drying Days Drying Cost per MBF L200 1 2 3 1,500 3,000 4,000 43,000 48,000 40,000 12 22 35 $44.27 $41.27 $44.31 180,000 135,000 88,000 3 8 16 $11.56 $15.66 $19.23 L300 1 2 3 2,000 6,000 8,000 80,000 114,000 96,000 135,000 320,000 144,000 9 19 30 $44.18 $32.92 $38.58 208,000 198,000 192,000 360,000 264,000 312,000 3 11 15 $13.18 $18.29 $19.61 L500 1 2 3 3,000 8,000 12,000 8 22 30 $43.21 $45.24 $46.11 3 8 14 $16.67 $17.12 $19.61 L1200S 1 2 3 10,000 20,000 30,000 400,000 400,000 360,000 9 18 28 $41.82 $43.69 $46.94 1,200,000 1,040,000 900,000 3 7 12 $14.73 $16.26 $19.36 16PDF Image | INTRODUCTION TO KILN DRYING
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