You have been asked to evaluate the economic implications of various methods for cooling condenser effluents from a 200-MW steamelectric plant. There are two basic types of cooling towers: wet and dry. Furthermore, heat may be removed from condenser water by (1) forcing (mechanically) air through the tower or (2) allowing heat transfer to occur by making use of natural draft. Consequently, there are four basic cooling tower designs that could be considered. Assuming that the cost of capital to the utility company is 10% per year, your job is to recommend the best alternative (i.e., the least expensive during the service life). Further, assume that each alternative is capable of satisfactorily removing waste heat from the condensers of a 200-MW power plant. What noneconomic factors can you identify that might also play a role in the decision-making process? Click the icon to view the alternatives description. Click the icon to view the interest and annuity table for discrete compounding when i = 10% per year. The AW of Wet Tower, Mechanical Draft is $ (Round to the nearest dollar.) Alternative Wet Tower Wet Tower Dry Tower Dry Tower Mech. Draft Natural Draft Mech. Draft Natural Draft Initial cost $2.5 million $9.2 million $5.1 million $9.0 million Power for I.D. fans 40 200-hp I.D. fans None 20 200-hp I.D. fans None Power for pumps 20 150-hp pumps 20 150-hp pumps 40 100-hp pumps 40 100-hp pumps Mechanical maintenance/year $0.16 million $0.09 million $0.18 million $0.10 million Service life 30 years Market value 0 0 0 100 hp = 74.6 kW; cost of power to plant is 2.2 cents per kWh or kilowatt-hour; induced-draft fans and pumps operate around the clock for 365 days/year (continuously). Assume that electric motors for pumps and fans are 90% efficient. 30 years 30 years 30 years Capital Recovery Factor To Find A Given P A/P N 1 2 3 Discrete Compounding; i = 10% Single Payment Uniform Series Compound Compound Sinking Amount Present Amount Present Fund Factor Worth Factor Factor Worth Factor Factor To Find F To Find P To Find F To Find P To Find A Given P Given F Given A Given A Given F F/P P/F FIA PIA A/F 1.1000 0.9091 1.0000 0.9091 1.0000 1.2100 0.8264 2.1000 1.7355 0.4762 1.3310 0.7513 3.3100 2.4869 0.3021 1.4641 0.6830 4.6410 3.1699 0.2155 1.6105 0.6209 6.1051 3.7908 0.1638 1.7716 0.5645 7.7156 4.3553 0.1296 1.9487 0.5132 9.4872 4.8684 0.1054 2.1436 0.4665 11.4359 5.3349 0.0874 2.3579 0.4241 13.5795 5.7590 0.0736 2.5937 0.3855 15.9374 6.1446 0.0627 2.8531 0.3505 18.5312 6.4951 0.0540 3.1384 0.3186 21.3843 6.8137 0.0468 3.4523 0.2897 24.5227 7.1034 0.0408 3.7975 0.2633 27.9750 7.3667 0.0357 4 5 01 1.1000 0.5762 0.4021 0.3155 0.2638 0.2296 0.2054 0.1874 0.1736 0.1627 0.1540 0.1468 0.1408 0.1357 11 12 13 14 ,July U. Tv.uTu ulu U:UTvU V.IIJU 11 12 13 14 15 2.5937 2.8531 3.1384 3.4523 3.7975 4.1772 4.5950 5.0545 5.5599 6.1159 6.7275 7.4002 8.1403 8.9543 9.8497 10.8347 17.4494 28.1024 45.2593 72.8905 117.3909 0.3855 0.3505 0.3186 0.2897 0.2633 0.2394 0.2176 0.1978 0.1799 0.1635 0.1486 0.1351 0.1228 0.1117 0.1015 0.0923 0.0573 0.0356 0.0221 0.0137 0.0085 15.9374 18.5312 21.3843 24.5227 27.9750 31.7725 35.9497 40.5447 45.5992 51.1591 57.2750 64.0025 71.4027 79.5430 88.4973 98.3471 164.4940 271.0244 442.5926 718.9048 1163.9085 6.1446 6.4951 6.8137 7.1034 7.3667 7.6061 7.8237 8.0216 8.2014 8.3649 8.5136 8.6487 8.7715 8.8832 8.9847 9.0770 9.4269 9.6442 9.7791 9.8628 9.9148 0.0627 0.0540 0.0468 0.0408 0.0357 0.0315 0.0278 0.0247 0.0219 0.0195 0.0175 0.0156 0.0140 0.0126 0.0113 0.0102 0.0061 0.0037 0.0023 0.0014 0.0009 0.1627 0.1540 0.1468 0.1408 0.1357 0.1315 0.1278 0.1247 0.1219 0.1195 0.1175 0.1156 0.1140 0.1126 0.1113 0.1102 0.1061 0.1037 0.1023 0.1014 0.1009 21 22 23 24 25 30 35 40 45 50