9-6. A steam generation system at a biomass- fueled power plant uses an electrostatic preci- pitator (ESP) to clean its gaseous effluents. The power plant has consistently made use of the same type of ESP over the past several years. The installed cost of a new ESP has been relatively constant at $80,000. Records of operation and maintenance expenses indicate the following average expenses per year as a function of the age of the ESP. The MVs of the ESP are also reasonably well known as a function of age. 1 Year O&M expense $30,000 $30,000 $35,000 $40,000 $45,000 Market value 60,000 50,000 40,000 25,000 12,500 2 3 4 5 Determine the best time to replace the ESP if the MARR is 15% per year. (9.5)

9-6. A steam generation system at a biomass- fueled power plant uses an electrostatic preci- pitator (ESP) to clean its gaseous effluents. The power plant has consistently made use of the same type of ESP over the past several years. The installed cost of a new ESP has been relatively constant at $80,000. Records of operation and maintenance expenses indicate the following average expenses per year as a function of the age of the ESP. The MVs of the ESP are also reasonably well known as a function of age. 1 Year O&M expense $30,000 $30,000 $35,000 $40,000 $45,000 Market value 60,000 50,000 40,000 25,000 12,500 2 3 4 5 Determine the best time to replace the ESP if the MARR is 15% per year. (9.5)

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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