Sajjad1994 wrote:
A certain electric utility is considering exactly two designs (Designs 1 and 2) for a new power generation plant. Each design would result in a plant that would generate the same amount of power annually; but Design 1 would use a single Type A power generator, whereas Design 2 would use three Type B power generators.
Type A generators cost less than Type B generators to fuel per unit of power generated and vent through taller chimneys, which better prevent pollutants from concentrating near the plant. However, Type A generators produce solid waste that is difficult and expensive to dispose of safely.
Type B generators produce no solid waste and, as compared to Type A generators, vent approximately half as much Pollutant X, and even less Pollutant Y, per unit of power generated annually. However, Type B generators vent through much shorter chimneys.
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Question 2.For each of the following statements, select Yes if the statement accurately reflects the information given in the tabs. Otherwise, select NoDuring the startup phase, the Design 1 power plant would emit more Pollutant Y per hour than would the Design 2 power plant.During startup, Design 1 (using one Power A) will emit 744 kg/hr of pollutant X
During startup, Design 2 (using three Power B) will emit 203*3 = 609 kg/hr of pollutant X
YES, Design 1 power plant would emit more Pollutant Y per hour than would the Design 2 power plant.
During the normal generating phase, the emissions per hour of Pollutant Y from the Design 2 power plant would be less than 5% of those from the Design 1 power plant.During the normal generating phase, emissions per hour of Pollutant Y from Design 1 will be 218 kg/hr
During the normal generating phase, emissions per hour of Pollutant Y from Design 2 will be 6*3 = 18 kg/hr
10% of 218 is about 21 so 18 is much more than 5% of 218.
NO, the emissions per hour of Pollutant Y from the Design 2 power plant would be MORE than 5% of those from the Design 1 power plant.
During the normal generating phase, the contribution to the ground-level concentration of Pollutant Y from the Design 2 power plant would be less than 25% of that from the Design 1 power plant.During the normal generating phase, Design 1 contribution to ground level pollution of Y is 13 mcg/m^3
During the normal generating phase, Design 2 contribution to ground level pollution of Y is 3*3 = 9 mcg/m^3
9 is more than 25% of 13.
NO, the contribution to the ground-level concentration of Pollutant Y from the Design 2 power plant would be MORE than 25% of that from the Design 1 power plant.