1 / 15

Electrical Power

Electrical Power. The rate at which electrical energy is converted to another form of energy. Thermal, Light, Motion…. Electrical Power. Power = current x voltage P = I x V The units for power: watts (W). Electrical Power.

kipp
Download Presentation

Electrical Power

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. Electrical Power • The rate at which electrical energy is converted to another form of energy. • Thermal, Light, Motion…

  2. Electrical Power • Power = current x voltage • P = I x V • The units for power: watts (W)

  3. Electrical Power • All appliances have a power rating to tell how much power it uses. [http://www.nationalwholesaletools.com/index.asp?PageAction=VIEWPROD&ProdID=357]

  4. [http://courses.knox.edu/envs101/appliances.JPG]

  5. [http://www.thediyworld.co.uk/washer%20rating3.jpg]

  6. Standard Voltage in the US is 120 V: P = 2.0 A x 120 V P = 240 W [http://www.northpower.com.au/wrs/res2.nsf/images/appliances/$file/Appliance2.jpg]

  7. Electrical Energy • The amount of power that is used over a given time. • Energy = Power x Time

  8. Electrical Energy • Electric companies normally use the kilowatt-hour to charge for energy. • Remember: 1 kilowatt is 1000 watts!

  9. MN is about 12 cents/kWh (When Taxes are Included)

  10. [http://www.think-energy.net/_85256A170068279F_li_meter3a__file_meter3a.jpg][http://www.think-energy.net/_85256A170068279F_li_meter3a__file_meter3a.jpg] May 1st May 31st 688 kWh used x $0.12 per kWh = $82.56

  11. Electrical Energy • Example: • How much does it cost to run an XBOX 360 (160 W) for 3 hours a day for an entire month? • 30 days x 3 hours = 90 hours

  12. Electrical Energy • Energy = 160 W x 90 h • Energy = 14400 Wh or 14.4 kWh • Each kWh in MN is 11 cents so… • 14.4 kWh x $0.11 = $1.58 per month Click Here for Xcel Energy Calculators

  13. Average % of Energy Usage in a Home

  14. [http://www.conservastore.com/productimages/03-0034B.jpg] [http://media.popularmechanics.com/images/tb_fllightbulb_sm.jpg]

  15. [http://www.gatech.edu/energybuzz/images/graphicBulbEfficiency.gif][http://www.gatech.edu/energybuzz/images/graphicBulbEfficiency.gif]

More Related