P08424 Residential Energy Savings Robert Underhill: Project Manager Aaron Resetarits: Component Analysis/ Implementation Feasibility Bill Jamieson: Building System Analysis/ Component Analysis Swathi Paruchuri: Statistical Analysis/ Human Behavior Kris Laera: Statistical Analysis/ Engineering Economics Jeremy Barczak: Coding/ Data Acquisition Sponsor – Facilities Management Services

Project Description Reduce energy consumption on Residential side of The RIT campus Market - Students living in the dorms Key High level Customer Needs Save RIT money Reduce Energy consumption Increase student awareness Characterize and explain student energy usage Engineering Specs Payback < 3 years >$24,000/yr 5% Reduction with modifiable suggestions >5% reduction with competition Involve 3380 students in competition to reduce their energy Breakdown (%)of the typical student’s energy based on 2.21 kWh total

System Architecture Overview Reduce Energy Energy Audit Grass Root Campaign WebsiteCompetition Hallway Lighting Incandescent Conversion

Results from Audit

Audit Verification Testing The results of the floor measurements will be broken down into a per student average and compared with the estimated per student energy usage. Both numbers will be compared on per day basis. Energy Usage Per Student Audit Results2.21 kWh/student/day Testing Results2.31 kWh/student/day Percent Difference4.50%

Website Architecture User Website Home Individual Contribution Daily/Weekly/Monthly Dorm Groups External Links Suggestions for Reducing Energy

Website Design

Website Implementation Modifications –Individual Student consumption –Hit counter –Monthly graphs

Website Test Results Time to access information: 30 seconds (marginal), 20 seconds (ideal) –Average time (from testing): 19.4 seconds Website is aesthetically pleasing: 3 (marginal), 4 (ideal) –Average rating : 3.1 (from testing) –Meeting the specification Functionality of website: 4 (marginal), 5 (ideal) –Average rating: 4.0 –Meeting the specification 75% of the surveyed students found it easy to get to the page and would visit the website again

Competition Get student organization support Advertise for Competition Website functioning Check Baseline Energy consumption 2 week competition Post-Competition Analysis Have Party for winners! Initiate competition Compare to baseline to determine winner

Competition Goals Reduce Energy Consumption ~10% of weekly use Save RIT on Energy Expenses $2000 during Competition Short Payback Period Pay for Party within 3 weeks Increase Student Awareness % resident student website hits

Competition Results Reduce Energy Consumption ~0.5% of weekly use Save RIT on Energy Expenses $ during Competition Short Payback Period Unknown Increase Student Awareness website hits (38.4%)

Results Breakdown Week 1: Group 1: Decrease 1.70%Group 2: Decrease 1.74% Group 3: Increase 2.73%Group 4: Increase 1.52% Total: Group 1: Decrease 0.50%Group 2: Decrease 1.18% Group 3: Increase 1.50%Group 4: Decrease 1.53%

Hallway Timers Assess performance Compare to Original goal Monitor % Decrease (1 week) FMS buys Hallway Timers Install Hallway Timer allowing lights on for 16hrs/day Establish Kwh Baseline (2 weeks)

Hallway Timer Results Electricity Saved = 8.67kWh Test Goal = 14.3kWh Overall Floor Electricity Reduction = 1.66% Marginal Goal = 1% Lighting Reduction = 2.74 hrs/day Test Goal = 4hrs/day This savings equates to $0.57/week = $20.09/ year With an overall cost of $81.08 to install this one timer we would see a payback period of 4.03 years Marginal Goal = 3 years Timer with Battery Backup Costs $ and provides 5.17 year payback period Hours of Reduced Lighting Years to Payback

Incandescent Conversion Assess performance Compare to Original goal Monitor % Decrease (1 week) Get students to Install new Fluorescent bulbs Buy bulbs Inform Students Count number Of incandescent bulbs Establish Kwh Baseline (2 weeks)

Bulb Conversion Goals and Results Goal: marginal 3.3%, ideal 5.9% Actually saved 3.813%! Met marginal specification value of 3% (savings of $5,700/yr) In the case of a policy change, conversion from incandescent to fluorescent bulbs is economically viable Less than a 1 year payback

Final Specifications Review