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GE-Sponsored Project

GE-Sponsored Project. Logan Adams Matt Blumberg Pat Mangan Tom Kaley. http:// www.tauxeef.com/wpcontent/uploads/2010/06/solar13.jpg. Problem Statement. Design a cell phone tower for the undeveloped city of Nakuru , Kenya

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GE-Sponsored Project

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  1. GE-Sponsored Project Logan Adams Matt Blumberg Pat Mangan Tom Kaley http://www.tauxeef.com/wpcontent/uploads/2010/06/solar13.jpg

  2. Problem Statement • Design a cell phone tower for the undeveloped city of Nakuru, Kenya • New grid will use sustainable energy, a diesel generator, and a sodium metal halide battery • Excess energy will be used to benefit the surrounding community and provide profit for the company . • System has a three year pay-back period http://news.bahai.org/community-news/regional-conferences/nakuru.html

  3. Research • Battery: • Efficiency in is 97%, efficiency out is 92% • Battery needs to be heated to300⁰C, requiring 1000W • Largest battery is .15m³ • Stored energy is 8.2kWh, 12.4kWh, or24.8kWh

  4. Research continued BTS (base transceiver system) • No specifically calculated maximum number of users • Amount of users and reception quality are inversely related. • Requires 1200 W http://ubuntulinux-blog.blogspot.com/2008/03/bss-bts-dan-bsc.html

  5. Research continued • Hut • Contains diesel generator, batteries, and other components of cell phone tower. • Fits insulation box for battery • Other Loads • No extra loads http://www.hks.demon.co.uk/jpegs/airwave_temp.jpg

  6. Analysis All Photovoltaic • 8kW system • 24kWh batteries • $33,588 • All Diesel • 1,283 gallons per year • $6,415 per year Hybrid • 6kW pv system • 20kWh battery • $25,050 • 58 gallons per year

  7. Cost Analysis • Over 4 year pay back • Hybrid system will cost $26,500 • Diesel system will cost $25,660 Cost ($) Years

  8. AnalysisClass Knowledge Application • Wind turbines • Inadequate wind energy • Solar cells • Angle of solar panels • Reflection? http://apps.carleton.edu/campus/facilities/sustainability/wind_turbine/ http://cnx.org/content/m33803/latest/

  9. Detailed Description COMPONENTS • Photovoltaic System (Yingli Solar) • $13,956.30 base cost • 6kW • Diesel Generator (Dewey Electronics) • $700 • 2kW POWER SOURCES CHARGE CONTROLLER

  10. Detailed DescriptionCOMPONENTS CONTINUED • Solar Charge Controller • Two 60-amp Xantrex Controllers • GE Sodium Metal Halide Battery • 2 batteries (A3 and A1) • 20 kWh total • BTS • Compatible with all phones http://www.absak.com/catalog/product_info.php/products_id/1066

  11. Detailed DescriptionSystem Schematic Power Sources BATTERIES (20kWh) CHARGE CONTROLLER PHOTOVOLTAICS DIESEL GENERATOR 12.4 kWh 8.2 kWh DC LOADS (BTS) = Energy to BTS = Energy Stored

  12. Detailed Description Model Solar Grid (27 panels, 6kW) Inside Hut (battery box, fuel tank, diesel generator, charge controllers) Diesel Generator Solar Panels, Hut, and BTS Tower

  13. Special Features • Insulated Battery Container • Prevent heat loss • Reduce energy required to heat battery • Hand-Crank Lights • Eliminates demand for lighting • no “other loads” http://www.rcreptiles.com/blog/index.php/2007/02/01/traveling_with_your_pet_ball_python

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