Fall 2009 Conference
This presentation is the property of its rightful owner.
Sponsored Links
1 / 40

Fall 2009 Conference North Carolina Association of Community College Facility Operations Wrightsville Beach, NC Dr. Peter Rojeski, PE, Ph.D. & PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on
  • Presentation posted in: General

Fall 2009 Conference North Carolina Association of Community College Facility Operations Wrightsville Beach, NC Dr. Peter Rojeski, PE, Ph.D. & Mr. Matt O’Brien, AIA, LEED AP. October 14,15 & 16, 2009. Agendas and Focus. Program Development. Tomorrow’s Focus (Dr. Rojeski).

Download Presentation

Fall 2009 Conference North Carolina Association of Community College Facility Operations Wrightsville Beach, NC Dr. Peter Rojeski, PE, Ph.D. &

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


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Fall 2009 Conference

North Carolina

Association of Community College Facility Operations

Wrightsville Beach, NC

Dr. Peter Rojeski, PE, Ph.D.

&

Mr. Matt O’Brien, AIA, LEED AP

October 14,15 & 16, 2009


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Agendas and Focus

Program Development

Tomorrow’s Focus

(Dr. Rojeski)

Establish Utility Baseline

Today’s Focus

(Matt O’Brien)

Facility Audits

(Existing Conditions)

Develop Energy Conservation Measures (ECM)

Behavior Management

Low Cost/No Cost

System Intervention

System Design

Implementation

(Individualized School Plan)

Implementation

(Individualized School Plan)

Implementation

(Individualized School Plan)

Tomorrow’s Focus

(Dr. Rojeski)

Evaluate Results

Evaluate Results

Evaluate Results

Reinvest Savings

Reinvest Savings


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Definitions:

PEA’s, DES’s, SEP’s & M&V’s

PEA = Preliminary Energy Audit

(use “New” ECM form)

DES = Detailed Energy Survey

(implies modeling)

SEP = Strategic Energy Plan

(and Water Plan)

SEP

M & v = Measurement &

verification

m & V = measurement & Verification


Step 1 of the strategic energy plan pea s data collection

Step 1 of the Strategic Energy Plan:PEA’s (Data Collection)

The Preliminary Energy Audit involves

collecting data about

the building from

construction and

maintenance records

and from a walk-thru

of the building.


Why are energy audits important

Why are Energy Audits Important ?


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

The results from an energy audit show you:

1. How efficiently your building is operating


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

The results from an energy audit show you:

How efficiently your building is operating

2. How you can increase efficiency using low cost or no cost changes in operation


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

The results from an energy audit show you:

1. How efficiently your building is operating

2. How you can increase efficiency using low cost or no cost changes in operation

3. How, with a capital investment, you can increase efficiency and reliability, and decrease maintenance costs


The energy utilization index eui

The Energy Utilization Index (EUI)

+If your building has utility meters, you can identify the least efficient buildings by calculating the EUI for each metered building.

+ Buildings with a high EUI are probably wasting energy and money, and they are the best candidates for an energy “tune-up”.


Energy performance indicators

Energy Performance Indicators:


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

How do I calculate the EUI for my building?

Since:

1 kW-hr = 3,412 BTUs (Electric Bill)

and

1 Therm = 100,000 BTUs (Gas Bill)

and

The building = 63,609 square feet

then


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

How do I calculate the EUI for my building?

Electrical Energy consumption: 1/1/08 to 12/31/08: 718,613 kW-hr. Natural Gas consumption: 1/1/08 t0 12/31/08: 10,819 therms.

Based on the two values, the energy utilization index (EUI) and the energy cost index (ECI) are:

55.56 kBTU/SF/YR and 1.09 $/kBTU/SF/YR


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Compare EUI to a data base of similar building types:


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

EUI & ECI Real Examples

Section 1.5 Building Energy and Cost Indices:

January 1, 2008 through December 31, 2008 is:

760,500 kW-h.

29,656 therms.

EUI = 105 kBTU/SF/YR and ECI = 1.72 $/kBTU/SF/YRrespectively.

4,119,120kW-h.

45,269 therms.

EUI = 140 kBTU/SF/YR and ECI = 2.00 $/kBTU/SF/YRrespectively.

332,820 kW-h.

3,157 therms.

EUI = 123kBTU/SF/YR and ECI = 2.30 $/kBTU/SF/YRrespectively.

(The facility’s energy utilization index is on the high side the reason may be the presence of two huge computer laboratories)


What if buildings are not individually metered

What if buildings are not individually metered ?

+ Not having individual meters makes the task of prioritizing your energy “tune-up” program difficult.

+ However, larger, older buildings with central air conditioning and central heating are probably the least energy efficient and should be placed at the top of

the priority list.

+ Sub-Metering devices


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

The “HOBO” Option

Guilford County & GTCC

In-House Electricians Aiding Installation of

CT DataLoggers for M & V Study


Preliminary energy audit findings

Preliminary Energy Audit Findings

Top Ten Low-Cost and No Cost Items

1. High or Low thermostat settings

2. Lights left “on” in unoccupied rooms

3. Dripping hot water faucets

4. Windows open when HVAC system is “on”

5. No weather stripping around doors

6. No caulking around windows

7. Heating boilers left idling during warm weather

8. Dirty coils in HVAC equipment

9. Clogged filters in HVAC equipment

10. Incandescent light bulbs


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

CERT’s ECM Tally Sheet-Top Ten (Summer 2008)

Note: All 40 buildings were candidates for Performance Contracting.

(We were unable to obtain energy bills in most cases)

HITSENERGY CONSERVATION MEASURE

35 Occupancy sensors should be installed.

21 Replace existing T-12’s with T-8’s and magnetic ballasts.

18 Remove lighting from vending machines or install vending misers.

17 Install 1.6 gpf water closets and .5 gpf urinals and low flow faucets in rest rooms.

13 Economizer needed in the building.

8 Provide optimum stop-start system for the HVAC system.

8 24/7 exhaust fans, ventilation & water heaters to be put on timer & be OFF overnight.

7 Exit lights should be replaced with LED.

7 Chiller approach should be set to 10°F – It is currently about 4.8°F.

6 Install programmable T-stats in all zones with set-back capabilities.


Step 2 of the strategic energy plan evaluate results develop plan

Step 2 of the Strategic Energy Plan:Evaluate Results & Develop Plan

Once no cost and low cost opportunities have been identified, then what?

1. Leadership team awareness and support

2. Monitor progress by installing meters

and/or sub-meters.

3. Education program for occupants and maintenance staff.

4. Make repairs and publicize energy-use

reductions on a quarterly basis.


Step 3 of the strategic energy plan des s quantify energy savings

Step 3 of the Strategic Energy Plan:DES’s (Quantify Energy Savings)

The Detailed Energy Survey identifies and quantifies capital investment opportunities that will increase HVAC system and lighting system efficiency and reliability, and will decrease maintenance costs.

The Detailed Energy Audit is conducted by a professional engineer who calculates utility savings, engineering design costs, construction costs, and payback.


Energy simulations consumption

Energy Simulations: Consumption

Fig.3: 2008 Electric Energy Consumption


Energy simulations demand

Energy Simulations: Demand

Fig. 4: 2008 Electric Power Demand


Energy simulations savings

Energy Simulations: Savings


Detailed energy audit

Detailed Energy Audit

Top SIX Energy Investment Opportunities

1. Lighting replacement, occupancy sensors, and day-lighting controls.

2. Installing state-of-the-art HVAC controls

3. Installing variable speed drives on pumps and fans.

4. Updating outside air economizer controls.

5. Installing energy recovery units.

6. Replacing old, inefficient HVAC boilers and chillers,


Step 5 of the strategic energy plan capital project implementation steps 4 and 6 are m v s

Step 5 of the Strategic Energy Plan:Capital Project Implementation (Steps 4 and 6 are M&V’s)

Selecting capital projects by choosing only projects

with short paybacks, like relamping.

Example: Replacing T12, 34 watt fluorescent lamps with T8, 25 watt lamps and electronic ballast:

Estimated Savings $ 13,981 / year

Estimated Cost: $ 39,597

Simple payback period: 2.8 years


Step 5 of the energy management program capital project implementation

Step 5 of the Energy Management Program: Capital Project Implementation

Accepting a longer payback and funding more

Projects, like motor replacement.

Example: Replace the 75 hp Motor with Premium Energy Efficient Motor

  • Estimated Savings: $ 905 / year

  • Estimated Cost: $ 4,436

  • Simple payback period: 4.9 years

  • It is assumed that the motor is operated 6000 hour/year.


Means of capital project funding

Means of Capital Project Funding

  • Raise construction funds (bonds, gifts)

    • Hire an architect and engineer to prepare plans

    • Bid the project

    • Monitor Construction

    • Commission the project

  • Performance Contracting

    • Select a performance contractor

    • Sign the contract


Steps 4 6 of the strategic energy plan m v measurement verification

Steps 4 & 6 of the Strategic Energy Plan: M & V (Measurement & Verification)

Based on a year of actual operation, did the retrofit project reduce energy costs as predicted?

Attend Dr. Rojeski’s presentation tomorrow.


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Data Collection

Measure Results

Evaluate Results

Implement Plan

Develop Plan

1. Data Collection – PEA

2. Evaluate Results/Develop Plan

3. Quantify Energy Savings – DES

4. Establish Baseline - M & v

5. Implement Plan

6. Verify/Validate - m & V

Review and Questions


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 1 of the “NEW” SEO ECM


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 2


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 3


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 4


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 5


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 6


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 7


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 8


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 9


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 10


Fall 2009 conference north carolina association of community college facility operations wrightsville beach nc dr peter rojeski pe ph d

Page 11


  • Login