Suppose a utility generates electricity with a 32% efficient coal-fired power plant that emits SO₂ at the legal limit of 0.6 lb per million Btu of heat into the plant. If the utility customers replace their 75W incandescent light bulbs with 18W compact fluorescent lights (CFL), then: a) Over the 10,000hr lifetime of each CFL, how many kW.hr of electricity is saved? Answer: 570 kW.hr b) How much SO₂ is not emitted due to this change? Note: the conversion factor from kW to Btu/hr is 3,412 kW/Btu.hr Answer: 3.65 lb c) How much would the utility save per CFL if it can sell its right to emit SO₂ at the price of $800 per ton, given that there are 2,000lb in a ton? Answer: $144

Suppose a utility generates electricity with a 32% efficient coal-fired power plant that emits SO₂ at the legal limit of 0.6 lb per million Btu of heat into the plant. If the utility customers replace their 75W incandescent light bulbs with 18W compact fluorescent lights (CFL), then: a) Over the 10,000hr lifetime of each CFL, how many kW.hr of electricity is saved? Answer: 570 kW.hr b) How much SO₂ is not emitted due to this change? Note: the conversion factor from kW to Btu/hr is 3,412 kW/Btu.hr Answer: 3.65 lb c) How much would the utility save per CFL if it can sell its right to emit SO₂ at the price of $800 per ton, given that there are 2,000lb in a ton? Answer: $144

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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