1 / 4

How much CO 2 does a coal-burning power plant emit?

How much CO 2 does a coal-burning power plant emit?. How much coal does it take to produce one kwh of electricity? A typical coal burning power plant (500 Mw) uses 250 tons/hr 2.5 x 10 2 x 2 x 10 3 = 500 x 10 3 lb/hr = 500 x 10 3 kwh /hr

lalasa
Télécharger la présentation

How much CO 2 does a coal-burning power plant emit?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. How much CO2 does a coal-burning power plant emit? • How much coal does it take to produce one kwh of electricity? • A typical coal burning power plant (500 Mw) uses 250 tons/hr • 2.5 x 102 x 2 x 103 = 500 x 103 lb/hr = 500 x 103kwh/hr • one pound of coal produces one kwh of electricity • How much CO2 is produced from a pound of coal? • Coal averages ~65% carbon • C (AW 12) / 0.65 CO2 (MW 44) • 0.65 x 44 / 12 = 2.4 lbs CO2 / lb coal • How much CO2 would be produced in one year? • 2.4 x 500 x 103 lb/hr x = 1.2 x 106 pounds of CO2/hr • 1.2 x 106/hr x 8000 hr/yr = 10 billion pounds of CO2/year A natural gas-fired combined cycle plant reduces CO2 by half

  2. How much CO2 does an average car emit? • A gallon of gas weighs 6 lbs and the average car gets 22 mpg • The average composition of gasoline is C8H18 • How much CO2 is produced per mile driven? • 6 lb/gal x 96/114 x 44/12 / 22 mi/gal = 0.84 lb/mi • The average car travels 12,000 miles per year • 0.84 x 12,000 ~ 10,000 lbs CO2 /car/yr • If an average coal-burning power plant emits 10 billion lbs CO2/yr, a power plant emits as much CO2 as 1 million cars

  3. Equivalent Energy Savings • Each of the following would save 50 billion pounds of CO2/yr, the equivalent of five average coal-burning power plants: • - Increasing average fuel efficiency by 0.5 mpg • - Driving 0.5 mile less per day per vehicle • - Each home does one less load of laundry per month • - Each home air conditioner runs for 10 minutes less per day • - Everyone daily • Uses a 15w CFL instead of a 60w incandescent bulb for 4 hours • Turns off a laptop computer for 4 hours • Turns off a desktop computer for 90 minutes • Turns off a TV for one hour

  4. Easy Factors to Remember • One pound of coal produces one kwh of electricity • One average coal-burning power plant emits 10 billion pounds of CO2 /yr or ~40,000 pounds/household • One average coal-burning power plant = 1 million cars • An average car emits 10,000 pounds of CO2 per year • One typical electric car (25 kw) could power five typical homes (5 kw assuming peak is 4x average usage).

More Related