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Two and a half cubic meters of lumber is being dried at 60C dry bulb temperature and 52C wet bulb temperature. The drying rate

 

Two and a half cubic meters of lumber is being dried at 60C dry bulb temperature and 52C wet bulb temperature. The drying rate of the lumber is 12,5 kg of water per hour. If outside air is at 27C dry bulb temperature and 80% relative humidity, how much outside air is needed per minute to carry away the evaporated moisture?

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