ENERGY CONSUMPTION: MANZANITA HALL ENERGY UPGRADES

1. ENERGY CONSUMPTION:MANZANITA HALL ENERGY UPGRADES BEN COHN DANNY GARNETT AUSTIN FROGGE PAUL SAIGEON MATT DUNCAN

2. Objective • To reduce Energy Consumption in Manzanita Hall at Arizona State University • To generate smarter and renewable energy • To save money by reducing energy costs

3. Focus Points • Heating and Cooling • Lighting • Renewable Energy • Dining Hall • Retrofit Building Timeline

4. Manzanita Hall

5. Heating and Cooling

6. HVAC System • Commercial sector accounts for 20% U.S. energy consumption • HVAC systems account for 30% of commercial building energy use • HVAC System Upgrades • Electronically commutated permanent magnet motors • Improved duct sealing • System diagnostics

7. ECPM • Electronically-Commutated Permanent Magnet Motors with Integrated Variable Speed Drives • ECPM’s save energy by allowing pumps, fans, and compressors to efficiently meet partial loads and avoid cycling losses caused by on/off operation. • Cost is initially higher with payback period between 2.5 and 8 years • Reduces HVAC energy consumption by 30%

8. Improved Duct Sealing • The average commercial building has duct systems that leak between 10% and 20% of the total air flow provided by the supply fan. • Can cost up to $ 0.40/sqft. • Energy savings of 4% to 9%

9. System Diagnostics • System diagnostics are used to identify failures in operation and inefficient system performance and alert building operators. • Cost varies widely depending on size and complexity of the system but offers an attractive .5 to 3 year payback period • Average energy savings of 10%

10. Lighting

11. Inefficient Lighting • To power a 100 Watt Light bulb for 1 year: • 740 lbs coal • 5 lbs. SOx (source of acid rain) • 5 lbs. NOx (source of acid rain, smog) • 1,852 lbs. COx (greenhouse gas)

12. Energy Star Light Bulbs • Compact fluorescent light bulbs (CFLs) • Prices range from $2 to $15 • Annual Savings • $30 million dollars over lifetime • Pay for itself in 6 months

13. Hallway Motion Sensors • Price Range = $20-$60 • Used with CFL’s • Turns on when senses motion and turns off after motion has stopped for a period of time • Huge savings compared to non motion sensors

14. LED • A solid state light source that uses an electrical signal run across a semiconductor • Benefits • Life Span • Durability • Maintenance • Flexibility • LED technology researched due to its potential

15. In the Dorm Room • Dimmer Switches - $20-$30 • Use Natural Light through windows during daytime • Use CFL or LED lighting • In overhead lights • In lamp and desk lamp

16. Renewable Energy

17. The Numbers • 840,000 kWH used last year • State average cost of electricity $.86/kWh • First Solar: cost = $5.10/kWh for installed panels • 840,000 kWh * .86 kWh = $722,400: Annual electric bill • 840,000 kWh * $5.10 = $4,284,000: Cost of setup before subsidies

18. Taxes and Savings • Taxes • Federal = 30% • State = 1% • Utility = 24% • Total = 55% • Tax Rebates = $2,356,200 • Total Cost of Solar = $1,927,800, Payoff = 2.6 years • 10 Year Savings = $5,345,760, 20 Year Savings = $10,185,840

19. Option 2: Rent Solar • 15% reduction in electricity costs • Renting = (722,400 * 10) * 15% • 10 year savings: $1,083,600 • 20 year savings: $2,167,200 • No upfront costs • No maintenance costs • Save money immediately

20. Dining Hall

21. Energy Star Appliances • -Energy Star Dishwasher • 10% more efficient than older models • Use half as much water as other models • Use circulated room air instead of heat to dry dishes • Energy Star Refrigerators and Freezers • 10-20% more efficient than older, more compact models • Able to store more because of the increase in capacity

22. Gas Stoves and Pressure Cooker • Gas Stoves • Use less energy than electric models • Pressure Cookers • Cook food faster cutting down the use of energy

23. Other ways to cut energy consumption in kitchen • Buy locally • Less packaged foods • Foods that take less time to prepare

24. Retrofit Building

25. Planning and Engineering (3 Months) • Meet with ASU, project administrators, engineers and architects to develop a green building that will serve the University functionally

26. Plan approval (1 Month) • Assure that all fire safety provisions set in place by the fire marshal are abided by. • Ensuring that the project abides by all local and national limitations as dictated by city ordinance.

27. Secure Funding & Develop Budget (2 months) • Calculate total project costs based on funding that is available while achieving the highest quality control and safety considerations. • Develop a budget for each phase of the construction project while assuring that it is with in the funding limitations.

28. Contractors Bid Phase (1 Month) • Collect competitive bids for all phases from start to completion of the project. • Review all contractors license and certifications. • Award the successful contractors and secure a written contract.

29. Construction (1 Year) • Construction will begin and take up to a year to retrofit Manzanita Hall.

30. Total Time Line • Planning and Engineering (3 months) • Plan Approval (1 month) • Secure Funding and Develop Budget (2 months) • Contractors Bid Phase (1 month) • Retrofit Construction (1 year) • Total Time Projected = 1 year 7 months

31. Sources • Energystar.gov • Howstuffworks.com • Science.howstuffworks.com/question481.htm