For each of the following problems, (a) draw the cash flow diagram; (b) present clean and clear manual solutions to the problem; (c) highlight the final answer (only the final answer as required by the problem) by enclosing it within a box. An engineer is trying to decide which process to use to reduce sludge volume prior to disposal. Belt filter presses (BFP) will cost $200,000 to buy and $80,000 per year to operate. Belts will be replaced one time per year at a cost of $5,500. Centrifuges will cost $400,000 to buy and $120,000 per year to operate, but because the centrifuge will produce a thicker cake, the sludge hauling cost to the monofill will be $30,000 per year less than for the belt presses. The useful lives are 5 and 10 years for BFP and the Centrifuge respectively. The salvage values are assumed to be 10% of the first cost of each process whenever they are closed down or replaced. The interest rate is 8%. the PW method and a study period of 15 years.

Projects BEF Cent First Cost 2,00,000 4,00,000 Operating Cost Per year 80,000 1,20,000…

Answered: For each of the following problems, (a)…

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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For each of the following problems, (a) draw the cash flow diagram; (b) present clean and clear manual solutions to the problem; (c) highlight the final answer (only the final answer as required by the problem) by enclosing it within a box.

An engineer is trying to decide which process to use to reduce sludge volume prior to disposal. Belt filter presses (BFP) will cost $200,000 to buy and $80,000 per year to operate. Belts will be replaced one time per year at a cost of $5,500. Centrifuges will cost $400,000 to buy and $120,000 per year to operate, but because the centrifuge will produce a thicker cake, the sludge hauling cost to the monofill will be $30,000 per year less than for the belt presses. The useful lives are 5 and 10 years for BFP and the Centrifuge respectively. The salvage values are assumed to be 10% of the first cost of each process whenever they are closed down or replaced. The interest rate is 8%. the PW method and a study period of 15 years.

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