(2
3.7 Integration of economic evaluation
Since the equipment cost is influenced by various factors such as usage, capacity, and materials, it is necessary to roughly estimate the equipment cost using equation. Total capital investment in the power plant neglected labor costs, installation costs, transportation costs, and pipeline installation costs except for some equipment costs. The equipment cost only considers devices such as Dryer, Shredder, and Furnace that are affected by the amount of EFB. Turbines are not considered because they are the same at 10 MW power generation, and detailed things like a pump blowers are ignored. The year in which the equipment cost estimate for dryers and shredders was developed was 2003 and the furnace was developed in 2002. Eqs 28 ~ 30 reflect the cost index in 2017.
3.7.1 Dryer cost
The cost of the dryer is affected by the area. Knowing the mass flow rate and drying time of the EFB, before estimating the dryer area, can estimate the volume of the dryer. It is assumed that the volume occupied by the EFB in the dryer is 20% and the density of the EFB is 500 kg / m3. If the EFB does not shrink during the drying process, the volume occupied by the EFB in the dryer is Eq. 24.