Electricity Usage Reduction

1. Electricity Usage Reduction Kevin Rabalais Advisor: Edward Rode’ ET 494

2. Why I chose this project?Because of the importance of eco friendly changes on our campus • Budget cuts staring this year: • $2 Million to $22 Million • Sustainability projects saved: • $1.2 Million

3. Project Overview • Main Goals: • Lower electricity use Southeastern Louisiana University’s campus. • Research the current electricity usefor buildings on southeastern campus and try and cut the usage by 30% • Calculate the cost and cost effectiveness that this project will entail

4. Where I obtained the information dealing with the electricity Usage? I acquired the monthly electricity readings of each building on campus form July 2012 to June 2013 by talking with the head of the maintenance department on Southeastern’s campus, Byron Patterson, who connected me with Melanie Easley who works in the physical plant.

5. Electricity readings Only four buildings with separates bills Alumni Center Financial Aid Cardinal Newman Horticulture center

6. Alumni Center

7. Financial Aid

8. Cardinal Newman

9. Horticulture Center

10. How can we bring down the electricity usage? • By replacing the windows in each building with better insulated windows to minimizing the usage of the air conditioner and heater. • The HVAC (heating, ventilation, and air conditioning) electricity usage in Louisiana accounts for around 40% of the electricity usage.

11. Single painwindows Windows lose/ gain heat in 4 ways

12. U-value = rate of heat transfer through the window R-value =resistance of heat flow (inverse of u-value) U-values R = (1/k) x d Resistance of material = (1/conductivity of material) x material thickness

13. Old windows Single Pane New window Double Pain Old VS New http://www.multiglassoftexas.com/window-pane-repair-&-insulated-double-pane.html http://www.quality-windows-doors.com/cg1.php

14. Diagram of how Low-e coating works Thermal scan of front side while back is being cooled to 0 deg F Low-e (low emissivity) Coating – lets visible light pass through while reflecting ultraviolet and inferred rays Center around 42 deg F Center around 56 deg F How it works Study done at Berkeley Lab by Howdy Goudey

15. Commercial building energy use in the US Made by: The Center for Climate and Energy Solutions

16. For States in the West South Central area the HVAC is closer to 40% of the buildings energy use.

17. Where AC and Heat Escape

18. General R-Value Table http://www.coloradoenergy.org/procorner/stuff/r-values.htm

19. Old VS New (continued) Single Pain (Aluminum frame) Double Insulated (1/2” air space w/ Low e) R-Value 0.91 3.13 U-Value 1.09 0.32 SHGC 0.60 0.30 The new windows are 344% moreefficient

20. Electricity Saved

21. Money Saved Cardinal Newman Financial Aid

22. Window sizes & cost

23. Window Sizes and cost Financial Aid Building

25. Amount of time for savings to equal the cost

26. Alternatives • Installing windows while the building is being constructed • Putting a low-e film or tint on the window • Installing storm windows

27. Installing windows while building is being built The windows for this project cost around 2 times as much as your standard commercial windows.

28. Problems I encountered • My building choices were limited • Could not use two of the four buildings for my project • Cardinal Newman Hall is not fully occupied • Physical plant did not have the window schedule for the Financial Aid Building • Finding cost estimates from a commercial window contractor

29. Was the project cost effective • I found that the project would not be cost effective if the windows needed to be replaced. • The windows could be cost effective if designed and built into new buildings.

30. Any Questions?