Energy Conservation Final Flashcards
Define Energy Conservation.
Any effort made to reduce the consumption of energy
Implementation, modification, and change in an ECO that results in energy savings is called what?
Energy Conservation Measure
What are the critical benefits of energy management and conservation?
For the economy: economic growth, trade balance, employment. For the environment: maximum indoor air quality in business, slow down consumption levels for all resources, control negative effects of acid rain and other environmental threats, and provide leadership for the public and private sector in conserving energy
What is the act of running a facility at peak performance with lower energy costs called?
Energy Conservation
Who developed Energy Star?
Envronmental Protection Agency
What does LEED establish?
A voluntary, consensus-based, market-driven building rating system for green building and operations. Standards to identify best practices and achievable energy conservation goals.
Energy Star uses Portfolio Manager for what?
It evaluates, benchmarks, and tracks a facility’s energy consumption
What is the USGBC?
The U.S. Green Building Council, membership organization open to corporations, organizations, and associations that establishes design standards incorporating environmental initiatives within the commercial real estate industry.
What is the USGBC’s mission?
To market transformation towards the vision of a sustainable, and eventually restorative, built environment within a generation
What does a sustainable building do?
Infrastructure and design that were fabricated with sustainable materials and maximum energy conservation measures, and the activities of the enterprise within the facility have a zero net impact on the environment
How many years can a building be recertified under LEED?
After 1 years up to 5 years
Define an ECM.
Actual implementation, modification, or change in an energy conservation opportunity that results in energy savings
Define a Primary ECM.
Energy-saving changes that you can perform and finance through the normal operating and maintenance budget
The only way to effectively monitor energy use with detailed information in a building is to do what?
Metering
What is Demand Management?
Determining your equipment start up based around your peak demand schedule, as determined by the utility, to reduce your energy costs
What is the first step in an Energy Audit?
Define organization structure of the team and develop a strategic plan
What tool is commonly used for electrical data collection for an energy audit?
Electrical Watt-hour meter (metering and sub-metering), Digital multimeter
What tool is commonly used for HVAC data collection for an energy audit?
Water or gas meter, anemometer, flow measurments, humidity meter, temperature meter, heat loss detection
What do ECOs identify?
Opportunities to conserve energy use in a building
What percentage of energy use in a building do lighting and motors account for individually and together?
Lighting 32.2%, Motors 32.2% = 64.4%
What are Demand Charges?
additional cost charged for ability of utility to deliver enough power to you reliably to meet your peak demand
Kilo-watts are calculated on a motor by voltage, current, power factor or what?
Horse Power
1 ton of cooling equals how much electrical power?
12,000 Btuh = 3.52 kW
What is the rate at which a material transfers heat energy?
Thermal Conductivity
What is the Second Law of Thermodynamics?
Heat naturally moves from a warmer body to a cooler one
What is the percentage of heat loss eliminated by insulating a hot surface?
90%
When testing for complete combustion, where is the best location to check for Carbon Monoxide?
Exhaust gases in the stack
Thousands of dollars are saved annually by maintaining an effective what?
Leak maintanance and repair program on steam and trap systems
Steam Trap proper operations requires what?
A higher pressure at the inlet than at the outlet.
What percentage of energy use does HVAC account for?
As much as 85%
HVAC performance changed by changes to the system can be what to increase efficiency?
Rebalanced to opperate more efficiently
Misguided energy conservation measures that decrease outside air intake can lead to what condition?
Sick Building Syndrome
What tool is used to determine human comfort in a building?
Survey (Polling) of Occupants, if 80% approve than the conditions are acceptable by ASHRAE
What are electrical equipment power surveys used for?
Used to identify and analyze energy conservation opportunities
What is the best method to determine power loads in a building?
Through direct measurement using a power meter
Motor efficiency measures what?
How effectively a motor converts electrical energy to mechanical energy
There are multiple ways to save energy use on lighting. Which is the best way?
Turning off lights when not in use
A BAS can integrate many systems. What is this called?
Optimization Programs or Technology Integration
Electrical demand limiting is also referred to as what?
Peak Demand Limiting
BAS start/stop optimization saves energy how?
Limiting operation time of HVAC-related systems by delaying start time and accelerating the shutdown conditions while still meeting occupancy environmental standards
Demand Control Ventilation works by adjusting outside air based on what?
On the number of occupants and the ventilation demands that those occupants create
Heat Exchangers are used for what purpose?
Used for exchanging hear from waste streams to process streams while isolating the process stream from contamination and maximizing the degree of heat transferred from the waster stream to the process stream
Solar, geothermal, and wind are examples of what?
Alternate Energy Technologies and Renewable Energy Technologies
What is the fundamental concept of Cogeneration?
Using nonrenewable resources, but maximizing the use of the power created through the generation of both electricity and mechanical power from a single fuel source
Which alternate energy source is most cost effective?
Wind Energy
Commissioning equipment is important to ensure what?
It operates efficiently and as designed to operate
The need of commissioning and is importance is due to what?
The ever-changing tenancy of a building, to ensure controls are operating properly, to reduce repair costs
Stationary Engineers should assist with or observe all functional testing of equipment and also?
Attend all training sessions
What is the first step when managing a project?
Planning and Creation: 1. Define goals, 2. determine tasks, 3. Assign resources, 4. Establish a schedule, 5. Review your plan
