So many light bulbs and so little time!!!! This week we completed the initial counts for three administrative buildings on campus: Benham GatewayHelfarian, and Cartref. In our search for ultimate illumination, we found that Gateway, the college’s admissions building, has a total of 105 T-8s, 22 PAR 38s and 286 of a new type of bulb, the T-5. This T-5 is a 3-foot custom bulb that uses 30W of power. Most of the fixtures we found utilize 4 of these bulbs. A suitable LED replacement for this bulb that is priced at $40.50 would be the best choice.
Benham Gateway
Yufan and I moved on to Helfarian and Cartref, two older buildings. Helfarian is the building on campus that contains the Resources department. Offices for the Comptroller and Dining Services are found in Cartref. Here there were two main types of bulbs: T-8s and PAR38. Cartref, on the other hand, only had one type of bulb, the T-8.
Cartref
Helfarian
After careful calculation, we came up with the following results.
|
|
Cartref |
Helfarian |
Gateway |
|||
|
|
T8 |
T8 |
PAR 38 |
T8 |
3 Ft T5 |
PAR38 |
|
Counts |
132 |
336 |
9 |
105 |
286 |
22 |
|
Initial Investment (Labor & Material) |
$12281.50 |
$30124.50 |
$870.60 |
$9835.00 |
$12691.33 |
$1807.30 |
|
Return on Energy Saving/Yr ($) |
$395.37 |
$1006.39 |
$151.63 |
$314.50 |
$749.55 |
$370.65 |
|
Return on Labor Cost/Yr ($) |
$739.2 |
$1881.6 |
$50.40 |
$588.00 |
$1601.6 |
$123.20 |
|
Total Return/Yr ($) |
$1134.57 |
$2887.99 |
$202.03 |
$902.50 |
$2351.15 |
$493.85 |
|
SmartIdeas Incentive ($) |
$2970.00 |
$7560.00 |
$135.00 |
$2362.50 |
$6435.00 |
$330.00 |
|
Years to Breakeven |
8.21 |
7.81 |
3.64 |
8.28 |
2.66 |
3.64 |
|
Carbon Emission Reduction/Yr (lbs) |
586.01 |
1491.67 |
224.75 |
466.15 |
1110.98 |
549.39 |
|
TOTAL Carbon Emission Reduction/Yr (lbs) |
586.01 |
1716.42 |
2126.52 |
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