The initial moisture content of diced carrots with a side of 1.5 cm is 88% and will be dried in a fluid bed dryer to the critical moisture content of 38%. Moisture contents are given on an age basis. In the constant drying rate zone, water is removed at a rate of 7x10-4 kg m2 s -1. In this case, calculate the fixed drying time. Fresh carrot density is 840 kg m-3.