m v part 3 femp m v methods l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
M&V Part 3: FEMP M&V Methods PowerPoint Presentation
Download Presentation
M&V Part 3: FEMP M&V Methods

Loading in 2 Seconds...

play fullscreen
1 / 38

M&V Part 3: FEMP M&V Methods - PowerPoint PPT Presentation


  • 228 Views
  • Uploaded on

M&V Part 3: FEMP M&V Methods. FEMP M&V Methods. Definition of Savings FEMP M&V Guidelines Examples & Applications. FEMP M&V Guidelines. For federal energy projects Step-by-step procedural guide Defines M&V methods by project type Current version is 2.2 (2000)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'M&V Part 3: FEMP M&V Methods' - luther


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
femp m v methods
FEMP M&V Methods
  • Definition of Savings
  • FEMP M&V Guidelines
  • Examples & Applications
femp m v guidelines
FEMP M&V Guidelines
  • For federal energy projects
  • Step-by-step procedural guide
  • Defines M&V methods by project type
  • Current version is 2.2 (2000)
  • Available at http://www.eren.doe.gov/femp/, http://ateam.lbl.gov/mv/ or 1-800-DOE-EREC.
what the guidelines cover
What the Guidelines Cover
  • Agreement language.
  • Overview of procedures.
  • Different M&V approaches.
  • Selecting the right approach for a project.
what the guidelines don t cover
What the Guidelines Don’t Cover
  • Specifying an approach for a project.
  • Specific M&V plan for each project.
  • Required uncertainty levels.
  • Specifying how to allocate risk between ESCO and agency.
  • Project-specific O&M savings.
femp m v compliance
FEMP M&V Compliance
  • Complying with the FEMP guidelines requires:
    • Developing an M&V plan using the defined methods.
    • Following the M&V plan.
  • The important consideration is what is in the plan.
options a b vs options c d
Options A&B vs. Options C&D

Options A&B are retrofit isolation methods.

Options C&D are whole-facility methods.

The difference is where the boundary lines are drawn.

option a

Option A

Option B

Option C

Option D

Option A
  • Simple approach (& low cost).
  • Performance parameters are measured (before & after), usage parameters may be stipulated.
  • Used where the ‘potential to perform’ needs to be verified but accurate savings estimation is not necessary.
  • Option A is NOT ‘stipulated savings’!
stipulate

Option A

Option B

Option C

Option D

Stipulate
  • To stipulate is to agree to a term or condition.
  • Under FEMP, to stipulate means to estimate without measurement.
  • A parameter is either measured or stipulated, but not both.
  • A measured parameter can be fixed for the contract term.
option a applications

Option A

Option B

Option C

Option D

Option A Applications
  • Projects where performance remains constant,usage can be readily characterized, and uncertainty is not a major issue.
  • Lighting efficiency.
  • Timeclock controls.
  • Efficient motors.
  • Operations & Maintenance.
option b

Option A

Option B

Option C

Option D

Option B
  • Under Option B, some or all parameters are measured periodically or continuously.
  • Applicable where accurate savings estimation is necessary and where long-term performance needs to be tracked.
  • Reduced uncertainty, but requires more effort.
option b applications

Option A

Option B

Option C

Option D

Option B Applications
  • Projects with large elements of uncertainty and/or risk ($$$).
  • Variable speed drives.
  • Chillers and chiller plants.
  • Energy management & control systems.
  • Projects where equipment needs constant attention.
option b benefits

Option A

Option B

Option C

Option D

Option B Benefits
  • Reasons to use Option B instead of A:
  • “Real” M&V.
  • Better equipment performance.
  • Improved O&M.
  • Continuous CommissioningSM
  • Remote monitoring.
  • ‘Continuous Commissioning’ is a service mark of Texas A&M University.
option c

Option A

Option B

Option C

Option D

Option C
  • Option C looks at energy use and cost of entire facility, not at specific equipment.
  • Usually simple.
  • Considers weather, occupancy, etc.
  • Applicable where total savings need to be quantified but component-level savings do not.
  • Commercial software available.
option c limitations

Option A

Option B

Option C

Option D

Option C Limitations
  • Does not verify at component level.
  • Requires savings to be significant (> 15% of baseline consumption).
  • Requires historical data (> 1 year).
  • May take time to evaluate savings.
  • May require baseline adjustment to account for non-project related factors.
option c applications

Option A

Option B

Option C

Option D

Option C Applications
  • Projects where facility usage remains constant and historical data is present.
  • Weather-dependent projects.
  • Heating projects.
  • Energy management & control systems.
  • Multiple interacting measures in a single building.
option d

Option A

Option B

Option C

Option D

Option D
  • Option D treats building as computer model.
  • Flexible, but requires significant effort.
  • Applications:
    • New construction.
    • Energy management & control systems.
    • Building use changes.
    • Building modifications.
option d limitations

Option A

Option B

Option C

Option D

Option D Limitations
  • Uses very specialized software that requires significant experience to use.
  • Results vary with effort (and $$$) expended.
  • Requires measurements for calibration.
  • Weather-related usage often stipulated.
  • Still need to verify ‘potential to perform.’
    • Annual inspections recommended.
examples

Option A

Option B

Option C

Option D

Examples
  • Option A: Lighting
  • Option B: Variable-Speed Drive
  • Option C: Heating Plant
  • Option D: New Construction
example lighting project

Option A

Option B

Option C

Option D

Example Lighting Project
  • Consider the following lighting project:
  • Upgrade 5,000 fixtures
  • Existing performance: 86 Watts
  • New performance: 56 Watts
  • Operating hours: 3,000/year
  • Electricity: $0.10/kWh
method le a 01 02

Option A

Option B

Option C

Option D

Method LE-A-01 / 02
  • Performance
  • Baseline power consumption is 86 Watts.
  • Proposed power consumption is 56 Watts.
  • Difference is 30 Watts.
  • Usage
  • Baseline & New: 3,000 hours / year
  • Financial
  • Energy = $0.10/kWh
lighting savings

Option A

Option B

Option C

Option D

Lighting Savings
  • E Savings = QTY * (Before - After) * Hours
  • ES = (5,000) * (86 W - 56 W) * (3,000 hours) * (1 kW / 1000 W)
  • ES = 450,000 kWh / year
  • Cost Savings = (Unit Cost) (Energy Savings)
  • Cost Savings = (450,000 kWh) * ($0.10/kWh)
  • Cost Savings = $45,000 / year
example vsd project

Option A

Option B

Option C

Option D

Example VSD Project
  • Variable Speed Drive on HVAC Fan.
  • Baseline Fan: Operates continuously at a single speed and power no matter what the cooling load is.
  • VSD Fan: Speed andpower change with coolingload (outside temperature).
vsd b 01

Option A

Option B

Option C

Option D

VSD-B-01
  • Fan Performance
  • Baseline fan: Constant power (140 kW).
  • VSD Fan: Power changes w/ weather.
  • Fan Usage
  • Fan power changes hourly with cooling load (outside temperature and sunshine).
  • Financial
  • Energy = $0.10 / kWh
monitor fan performance

Option A

Option B

Option C

Option D

Monitor Fan Performance
calculate monthly savings

Option A

Option B

Option C

Option D

Calculate Monthly Savings

E Savings = S(kWBefore - kWAfter) * (1 Hour)

Cost Savings = (Unit Cost) (Energy Savings)

example heating project

Option A

Option B

Option C

Option D

Example Heating Project
  • Heating system upgrade at eastern US military base.
  • Baseline: Gas-fired boilers with central steam plant provide heat to buildings.
  • New System: Shut down steam plant. Install gas furnaces in all buildings.
heating system characteristics

Option A

Option B

Option C

Option D

Heating System Characteristics
  • Base Performance
  • Baseline: low-efficiency and steam loss.
  • New: High efficiency, no steam loss.
  • Energy Usage
  • Driven by weather.
  • Financial
  • Gas is $0.50/therm.
develop baseline model

Option A

Option B

Option C

Option D

Develop Baseline Model
calculate monthly savings32

Option A

Option B

Option C

Option D

Calculate Monthly Savings

Baseline, therms = 25.6 * HDD - 1,378

example new construction

Option A

Option B

Option C

Option D

Example New Construction
  • Proposed building incorporates energy-efficient design features selected by ESCO.
  • Baseline building is existing design before ESCO modifications.
develop computer model

Option A

Option B

Option C

Option D

Develop Computer Model...
and evaluate results

Option A

Option B

Option C

Option D

...And Evaluate Results
calculate savings

Option A

Option B

Option C

Option D

Calculate Savings
  • Evaluate energy use for each scenario.
  • Calculate savings for each scenario relative to base case.
review and discussion
Review and Discussion
  • Total energy use and savings are a function of both usage and savings.
  • Options A & B are retrofit-isolation methods.
  • Options C & D are whole-facility methods.
  • Can mix & match methods.
review questions
Review Questions
  • What two factors determine energy savings?
  • How does one ‘comply’ with the FEMP Guidelines?