1 / 15

D ESIGN FOR C ONSTRAINTS

Explore the intricate balance of economic, environmental, social, political, ethical, health, safety, and manufacturability constraints in the design of LED lightbulbs. Discover how LED technology offers a sustainable, cost-effective, and eco-friendly lighting solution while navigating various real-world challenges.

hectormyers
Download Presentation

D ESIGN FOR C ONSTRAINTS

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. DESIGNFOR CONSTRAINTS Neil E. Cotter ECE Department UNIVERSITYOFUTAH necotter@ece.utah.edu

  2. LED Lightbulb Constraints • LED bulb design • Realistic design constraints • Economic • Environmental • Social • Political • Ethical • Health • Safety • Manufacturability • Sustainability

  3. LED Bulb Design [1] [2] • Individual LED’s • Metal heat fins • 110 VAC to 4 VDC power

  4. Economics [3] • Longterm Cost < CFL and Incandescent • Initial cost > CFL and Incandescent

  5. Environment [4] • Huge power savings depending on hours of light use per day

  6. Society [5] • Can the poor afford LED bulbs? • Transition cost per room > $50

  7. Politics [6] • Incandescent ban postponed

  8. Ethics [7] • Should CFL and Incandescent be banned?

  9. Health [8] • Is quality of light adequate? • Can use phosphors to create colors

  10. Safety • Lower temperature? • Less heat • Lower voltage

  11. Manufacturability [9] • Energy to manufacture < CFL and Incandescent

  12. Sustainability [11] • No mercury [10] • Some arsenic and lead if manufactured poorly [11]

  13. LEDs are the Future • Less energy • Less toxic • Less cost [1]

  14. References [1] http://eartheasy.com/live_energyeff_lighting.htm [2] http://blog.makezine.com/2011/08/09/led-light-bulb-teardown/ [3] http://eartheasy.com/live_led_bulbs_comparison.html [4] I.L. Azevedo, M.G. Morgan, F. Morgan, “The transition to solid-state lighting,”Proceedings of the IEEE,vol. 97 , issue 3, 2009 , pp. 481-510. Digital Object Identifier: 10.1109/JPROC.2009.2013058 [5] http://www.sears.com/shc/s/p_10153_12605_SPM6583418602P?sid=IDx20070921x00003a&ci_src=14110944&ci_sku=SPM6583418602 [6] http://www.washingtontimes.com/news/2011/dec/16/congress-overturns-incandescent-light-bulb-ban/ [7] Stevenson, R. “LEDs for less”IEEE Spectrum,vol 49, issue 1,2012, pp. 39 - 40. Digital Object Identifier: 10.1109/MSPEC.2012.6117834 [8] I.L. Azevedo, M.G. Morgan, F. Morgan, “The transition to solid-state lighting,”Proceedings of the IEEE,vol. 97 , issue 3, 2009 , pp. 481-510. Digital Object Identifier: 10.1109/JPROC.2009.2013058 [9] S. Uddin, H. Shareef, A. Mohamed, M. A. Hannan, K. Mohamed, “LEDs as energy efficient lighting systems: A detail review,” Research and Dev (SCOReD), 2011 IEEE Student Conference on, pp. 468-472, 2011. [10] E.F. Schubert “Invited talk: Promises and challenges in light-emitting diodes for lighting applications”,Microelectronics and Electron Devices (WMED), 2011 IEEE Workshop on,2011, pp. 1.Digital Object Identifier: 10.1109/WMED.2011.5767269 [11] http://today.uci.edu/news/2011/02/nr_LED_110210.php Neil E. Cotter necotter@ece.utah.edu

More Related