ENERGY CONSUMPTION: MANZANITA HALL ENERGY UPGRADES BEN COHNDANNY GARNETT AUSTIN FROGGEPAUL SAIGEON MATT DUNCAN

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

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

Manzanita Hall

Heating and Cooling

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

ECPM Electronically-Commutated Permanent Magnet Motors with Integrated Variable Speed Drives 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. 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 Cost is initially higher with payback period between 2.5 and 8 years Reduces HVAC energy consumption by 30% Reduces HVAC energy consumption by 30%

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%

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%

Lighting

Inefficient Lighting To power a 100 Watt Light bulb for 1 year: 740 lbs coal 5 lbs. SO x (source of acid rain) 5 lbs. NO x (source of acid rain, smog) 1,852 lbs. CO x (greenhouse gas)

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

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

LED A solid state light source that uses an electrical signal run across a semiconductor Benefits Life Span DurabilityMaintenanceFlexibility LED technology researched due to its potential

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

Renewable Energy

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

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

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

Dining Hall

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

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

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

Retrofit Building

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

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.

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.

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.

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

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

Sources Energystar.govHowstuffworks.comScience.howstuffworks.com/question481.htm