COMMERCIAL RFV KILN DRYING

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COMMERCIAL RFV KILN DRYING ( commercial-rfv-kiln-drying )

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TABLE 2 – Re-dry economics in a 50 m3 RFV kiln. RF into wood Drying Time Processing Rate Total Electricity per Charge Energy Cost © 4.4/kWh $ / Mfbm HemFir 22% -17% 150 kW 5 hrs 2.3 MMfbm/mo 1,300 kWh $60 $3.14 SPF 22% -17% 150 kW 5 hrs 2.3 MMfbm/mo 1,300 kWh $60 $3.14 SYP 22% -17% 150 kW 7 hrs 1.9 MMfbm/mo 1,700 kWh $75 $3.93 Red Oak 4/4 or 8/4 15% -8% 150 kW 13 hrs 970 Mfbm/mo 3,200 kWh $143 $7.48 fingerjoined boards as a result of the RFV kiln. Drying of green trim ends also is possible but RFV drying times are considerably longer due to the increased amount of water to remove (refer to the previous "Re-Drying" section). Table 3 provides a description of drying costs for trim ends. TABLE 3 – Trim block drying economics in a 50 m3 RFV kiln. SPF Trim Ends 19% -14% 150 kW 5 hrs 3.0 MMfbm/mo 1,330 kWh $60 $2.42 Western Dry Kiln Association HemFir Clear Blocks 16% -10% 150 kW 6 hrs 1.9 MMfbm/mo 1,600 kWh $72 $3.77 41 SPF Green Trim Ends 35% -15% 250 kW 13 hrs 1.2 MMfbm/mo 4,900 kWh $221 $11.57 Aspen Trim Blocks 50% -10% 250 kW 26 hrs 477 Mfbm/mo 9,800 kWh $442 $23.14 May, 2000 RF into wood Drying Time Processing Rate Total Electricity per Charge Energy Cost © 4.50/kWh $ / Mfbm

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