Slide 1

Agenda Energy Audit (Randy & Student Way) Savings Strategies Checklist & Presentation Copy Slide 2 The Basics: Energy Audit Q: What is an Energy Audit? Ans: Simply, an Accounting of energy use Q: Audit Necessary to Obtain Energy Savings? Ans: No, but... Q: Then why do it? Ans: Help identify best opportunities Slide 3 More Basics: What Uses Energy? - Building- People - Building Guts Slide 4 Before a (Physical) Audit Dont guess about opportunities & act Do this instead: l Get a (better) sense for whats important l Sense what you can control l Focus approach/efforts accordingly How? Slide 5 Energy Audit Approach Step 1: Obtain Historical Energy Consumption Step 2: Get Idea of how Total Energy breaks into Use Categories Step 3: Verify (Assumptions) in Step 2 with (More) Research Step 4: Visit Site: Verify Research & Look for Opportunities Slide 6 Step One: Energy History Slide 7 Step Two: Energy Breakdown Slide 8 Natural Gas Subgroups at Dorm Slide 9 Electricity Subgroups at Dorm Slide 10 Bottom Line: Limitations Natural Gas Electrical Slide 11 Step Three: (In-Depth) Research Research Assumptions on Energy Use Categories: l Building plans/blueprints/specifications l Talk to Building Experts Slide 12 Step Four: Verify Building Walkthrough l Look at the Building/Equipment l Talk to the Occupants Slide 13 What are We Looking For? Verify what learned from Plans/Experts l Equipment* Size l Equipment Efficiency l Equipment Location l Equipment Condition Why do this? l The Plans/Experts arent always right * Equipment = Furnaces, Air Conditioners, Lighting, Kitchen Equipment, Fans, Etc., Etc. Slide 14 Building Walkthrough Slide 15 Building Walkthrough What am I looking for? Slide 16 Nameplate Data Slide 17 Summarize Data Example: Natural Gas Slide 18 Efficiency Improvement? Slide 19 Problem Students dont have a budget to replace equipment Slide 20 Auditing for Other Opportunities Waste Excess Consumption Comfort Slide 21 Best Opportunities? Natural Gas Electrical Slide 22 Best Electric Opportunities? Natural GasElectrical Slide 23 Plug Load Opportunities? Slide 24 Audit Sampling Slide 25 Random Sample Room X: 3500 watts of appliances Room Y: 500 watts of appliances Room Z: 350 watts of appliances Slide 26 Which Room Uses More Energy? Room X: 3500 watts of appliances Room Y: 500 watts of appliances Room Z: 350 watts of appliances Room X: 3500w? * ?? hour/day = ?? kWh/day Room Y: 500w? * ?? hours/day = ?? kWh/day Room Z: 350w? * ?? hours/day = ?? kWh/day ?? = People Behavior/Lifestyle Slide 27 Random Sample Room X Room Y Room Z Slide 28 Which Room Uses More Energy? Room X: 3500 watts of appliances Room Y: 500 watts of appliances Room Z: 350 watts of appliances Room X: 3500w * 1 hour/day = 3.5 kWh/day Room Y: 500w * 4 hours/day = 2.0 kWh/day Room Z: 350w * 24 hours/day = 8.4 kWh/day Slide 29 Blend Samples Room X: 3500w * 1 hour/day = 3.5 kWh/day Room Y: 500w * 4 hours/day = 2.0 kWh/day Room Z: 350w * 24 hours/day = 8.4 kWh/day (3.5+2.0+8.4)/ 3 Samples = 4.63kWh/day Use/Room 4.63 * 100Rooms = 463 kWh/day for Building 463 kWh * Days Occupied = Annual Building Use Slide 30 Reconcile 463kWh * Days Occupied = Annual Building Use Slide 31 Voila! Energy Audit 1390kWh * Days Occupied = Annual Building Use Slide 32 After the Audit Audit Serves as a Basis for Savings Strategy for your Eco-Olympics Now Work on Strategy to Implement Savings l Creativity l Effort Slide 33 Sample Energy Calculation Room X Student X Use Desired Change ChangeSavings Probability 3500 watts * (1 hr/day) * 50% reduction * 20% = 350 watts/day Slide 34 Sample Energy Calculation Room X Student X Use Desired Change ChangeSavings Probability 3500 watts * (1 hr/day) * 50% reduction * 20% = 350 watts/day 30% reduction * 50% = 525 watts/day Slide 35 Conclusion/Questions Energy Research Aids Savings Efforts Randy Versus Student Way are Different but Share the Same Desired Goal Savings Strategies Can Influence Savings