© 2004, Energy Systems Laboratory, Texas A&M University System1 The Energy Advancement Leadership...

1© 2004, Energy Systems Laboratory, Texas A&M University System

The Energy Advancement Leadership ConferenceAvailable Technologies: Energy Efficiency

Energy Efficiency & Air QualityTom Fitzpatrick

Energy Systems LaboratoryTexas Engineering Experiment Station

Texas A&M University System

November 17, 2004

© 2004, Energy Systems Laboratory, Texas A&M University System

Objectives

• Introduce the Energy Systems Lab• Call your attention to practical potential of energy

efficiency• Highlight recent work on methodology to

calculate creditable emissions reductions from EE/RE in clean air plans

• Highlight a low-investment, high return approach to improving building efficiency, called Continuous CommissioningSM

• Invite you to a new event.



Energy Systems Laboratory• Division within Texas Engineering Experiment

Station, Texas A&M University System• Conducts research on energy efficient

design/operations for large buildings & renewable energy applications

• Conducts testing of HVAC equipment, meters/sensors & photovoltaic technologies

• Developed and supports market deployment of building optimization technique - Continuous Commissioning®

• Provides technical support for energy efficiency initiatives in TERP



Significance of Energy Efficiency & Renewable

Energy in Texas

EE/RE is cleanest, most cost effective, readily available means to meet new energy demand.

“Off the shelf” technologies (lighting, controls, HVACs, traffic signals) could save

Texas Tune-up (CC®) of commercial buildings could save (~$30M TAMU)

Improving water & waste water treatment/distribution (up to 50% of local govt. energy use) save

Alternate resources such as wind, biomass & PV offset fossil fuels

10 – 90 %

15 – 20 %

20 – 40 %

(Highest Renewable Potential of any state)


Energy Efficiency in the TERP

• SB 5 (77th) created framework for SIP credits from Energy Efficiency & Renewable Energy (EE/RE)

• Authorized TCEQ to promote EE/RE as a control strategy & to create a methodology for obtaining SIP credits

• Mandated statewide adoption of Energy Codes for residential/commercial construction

• Mandated 5% energy savings goal annually by local government buildings in affected counties



An Easily AccessibleWeb Based

Emissions Reductions and Energy Savings Calculator


General Capabilities (ECalc)

• Calculates energy and emissions savings from code-compliant new construction and certain public building retrofits

• Calculates savings from renewable Solar Hot Water, Solar PV, and Wind Power projects

• Calculates savings for Municipal Water, Wastewater, Traffic Lights and Street Lights projects


Models


Express Calc

55

43

R-26

R-13

21

0.45

4.3

86


Utility Bill Entry


Solar – Domestic Hot Water

60

60


Job Report - SummarySummary Report currently being evaluated to further simplify

-

174.3208.8

165.7CodePrecode

User Input0.340.42

0.3269,576.478,889.1

67,469.2 1231.41402.6

1090.3CodePrecode

User Input0.420.51

0.39311,365.8372,229.1

292,835.4

174.3208.8

165.7CodePrecode

User Input0.340.42

0.3269,576.478,889.1

67,469.2


Job Report - DetailsDetailed Report provides needed information for obtaining SIP credits

Several pages of information can be automatically read and tallied


System Architecture - Overview

Web Server Database Server CalcEngine(s)

DOE-2 v2.1EFchart

PVFChartIMT

Calc Servers

User

Web ServerDB Server

SQL Server2000

C#.NETASP.NETADO.NET

XML

Email w results

VB.NETADO.NET

ASCIIOutput

BrowserRenewables

MunicipalCommunity

Buildings


eCalc Block Diagram Calculation Engine

CE FramePitcher

CE FrameCatcher

DOE-2

FCHART

PVFCHART

UTILITYBILLS(24 mo)

LIGHTING ANDWATER

SYSTEMS

eGRID

Weather

NOAAWeather

WeatherFilter, QA and

Filling

User

Web

Model Inputs

Utility Bills

Job

Web Server

Reports Report/

Email

Database

DB Server

XML

Data

SQL

2000

XSLTfromXML

JobData

Pa

ram

ete

rs f

rom

Use

r,an

d “B

uild

ing

Da

tab

ase

”

Job Completion/Failure

Intermediate and

Final Run Data

Workstation(s)

PEAKEXTRACTOR

(IMT)

XML


What is Continuous Commissioning®?

• A team effort (facility staff and CC® engineers) which commissions mechanical and control devices to optimize overall building performance

• Oriented toward total building performance with an emphasis on reducing energy costs and improving comfort

• Optimizes energy consumption of the building as it is currently operated, not as designed

• “Continuous” emphasizes the need for performance tracking and ongoing service to keep the commissioning “continuous”


Continuous Commissioning Started with Retrofit Projects

$0

$500,000

$1,000,000

$1,500,000

$2,000,000

$2,500,000

$3,000,000

$3,500,000

$4,000,000

$4,500,000

$5,000,000

TSH UTMB UTHSC

Before Retrofit After Retrofit After CC


Examples of CC Projects

• Texas LoanSTAR Program• Texas A&M University Campus• Terrell State Hospital• Brooke Army Medical Center• Penn State University• Fairview University Medical Center –

Minneapolis• Alamo Community College District


Step 1

Initial Survey Identify CC / ECM’s / Savings Specify Monitoring Approval to ProceedInvolve Facility Staff

Step 2Install Monitoring Develop Energy BaselineInvolve/Train Facility Staff

Step 3

Survey Facility Problem Solving Quantify / Prioritize CC / ECM’s Analyze Energy Flow Involve Facility Staff

Step 4

Step 5

Install / Commission Major Equipment to Building NeedsAdditional Problem SolvingInvolve/Train Facility Staff

Step 6

Commission Entire Building to Building NeedsAdditional Problem SolvingInvolve/Train Facility Staff

On-Going Monitoring / AnalysisFeedback Results to Facility StaffRevisit Building YearlyInvolve/Retrain Facility Staff

Process


Case Study:Kleberg Building, Texas A&M Campus

• Building:165,031 ft2, 4-floors plus bsmt.• HVAC:

– 2 x 100hp SDVAV AHUs with Pre-Heat and Terminal Box Reheat

– 2 x 25hp Return Air Fans

• Building Type: Classrooms, Offices, Laboratories

• Central Plant Supply: CHW & HW


Kleberg:

Major CC Measures Implemented

1. Applied preheat & cold deck reset schedules

2. Utilized economizer cycle3. Optimized CHW pump control4. Performed lab air balance

Reduced building pressure from 0.05” to 0.03” H2OReduced exhaust duct pressure from 3.0” to 0.75” H2O


Kleberg Building:

Heating Consumption:

Kleberg BuildingHot Water Consumption

0.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0

OA Temp, °F

HW

Btu

(K

Btu

/h)

Pre-CC

Post-CC


Kleberg Building: Cooling Consumption

Kleberg BuildingChilled Water Consumption

0.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

9000.0

10000.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0

OA Temp, °F

CW

Btu

(K

Btu

/h)

Pre-CC

Post-CC


Kleberg Building:

Case Study Results

Measured Savings

(Jun ‘96 to July ‘99)

HW = $482,600 (84% energy reduction)

CHW = $656,200 (63% energy reduction)

Total = $1,138,800

Average Annual Savings: $360,000 / year


Summary of CC Benefits

• Reduce energy use and related environmental impacts

• Simple Pay-back: Typically less than three years• Project Duration: Typically 3 weeks to 10 weeks per

building• Building Comfort: Improved• Maintenance Cost: Reduced• Potential System Upgrades: Identified• Technical knowledge of in-house operating staff:

Improved


Benefits of Energy Efficiency & Renewable Energy Sources

• Reduced air pollution

• Reduced needs/costs for Electric Generation and new Transmission

• Reduced requirement for fossil fuels

• Cheap, clean, readily available supply

• Proven reserves Gap

?Alternate ResourcesEnergy Efficiency

Energy

Demand

Energy Supply

Time


Invitation• Emissions Reduction & Energy Leadership

Summit in San Antonio Dec. 14 – 17, 2004• www.sanantonioenergyleadership.org


Thanks!

• The need and opportunity for energy efficiency is growing

• eCalc is an easy to use tool to support crediting EE/RE with emissions reductions

• Continuous Commissioning® is a technique for delivering energy efficiency in existing buildings, with or without retrofit.

• Come see us in San Antonio Dec. 14-16.


© 2004, Energy Systems Laboratory, Texas A&M University System1 The Energy Advancement Leadership...

Documents

Transcript of © 2004, Energy Systems Laboratory, Texas A&M University System1 The Energy Advancement Leadership...