Transcript ENERGY CONSUMPTION: MANZANITA HALL ENERGY UPGRADES

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
• HVAC systems account for 30% of commercial
building energy use
• HVAC System Upgrades
• Electronically commutated permanent magnet motors
• Improved duct sealing
• System diagnostics
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%
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. SOx (source of acid rain)
5 lbs. NOx (source of acid rain, smog)
1,852 lbs. COx (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
Durability
Maintenance
Flexibility
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: $1,083,600
20 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.gov
Howstuffworks.com
Science.howstuffworks.com/question481.htm