building america update - nrel · civano ics solar water pre-heater study Ł instrumented system on...

Building Energy Technology

Building America Update

Dr. Ren AndersonBuilding America Integration Meeting

April 10-11, 2001

DOE Office of Building TechnologyState and Community Programs


Cost/benefit trade-offs improve whole building performance without increasing cost

�Reduced utility bills

�Improved sales�Reduced warranty and callback issues�Accelerated adoption of new technologies�Healthy, comfortable homes

Building America Results


Transition of new systems from niche to broad markets requires �bomb proof� integration

Key Technical & Programmatic Challenges


System innovations require substantial private sector cost share driven by sustainable markets

Market, Policy, & Other External Barriers


Limit the risk associated with development and integration of innovative and emerging energy systems in residential buildings

Strategic Approach


Team Members Include:

�Lead Builders�Equipment Manufacturers

�Material Suppliers�Designers�Developers�Utilities

Technology Centers

DOE Buildings Program

IndustryTeams

Strategic Approach


Energy� Reduce energy use by 30-70%

Resource Use� Reduce construction waste and increase

productivity

Quality� Increase durability and maintainability

Strategic Approach


�Market Needs�

�Key Capabilities��Systems Approach�

How?

What?

Low HighLow

High

�SystemInnovation!�

Strategic Approach


VISION

CONSENSUS PERFORMANCE TARGETS

MARKET CHANGE

MARKETNEEDS

STRATEGICALLIANCES

MARKETDRIVERS

NATIONAL IMPERATIVELEADERSHIP

POLICYCHANGE

POLICYDRIVERS

Cost Sharing

Building America�s Partners Contribute


VISION

CONSENSUS PERFORMANCE TARGETS

MARKET CHANGE

MARKETDRIVERS

STRATEGICALLIANCES

PROCESSDRIVERS

NATIONAL IMPERATIVELEADERSHIP

POLICYCHANGE

POLICYDRIVERS

COST SHARING

SYSTEM INTEGRATION

SYSTEMPERFORMANCE

SYSTEMDEVELOPMENT

SystemsEngineering

Building America Contributes


Building America Innovation Goals� Develop and Transfer major systems

innovations to community-scale developments

� Support upstream system engineering with industry team members to fill advanced system needs including

-residential ventilation and dehumidification-low cost, efficient water heaters-durable foundation insulation-onsite power systems


�Expected� �Proven� �Emerging� �Innovative�

�Low� �High�

Development Status

Potential Risks and Rewards

Innovation is Accelerated by Limiting RiskIndustry Sector

�Standard Practice� �Best Practice� �Lead Builder� �Early Adopter�


Innovation Reward Vs. Risk

PotentialReward

High

LowLow High

�Expected�

�Proven�

�Emerging�

�Innovative�

Potential Risk


Industry Leaders

% Usage

Usage Vs. Risk

High

LowLow High

�Expected�

�Proven� �Emerging� �Innovative�

Potential Risk

IndustryAverage

IndustryLeader

UsageGap


UsageGap

Usage Gap Vs. Risk

High

LowLow High

�Expected�

�Proven�

�Emerging�

�Innovative�

Potential Risk

Balanced Portfolio Accelerates Innovation by Managing Risk


Peer to Peer DiffusionBuilding America Peer to Peer Diffusion Model

Cost/Performance Knowledge Required to Accelerate System Innovation

Draft rsa- 2/22/01

Delivery Mechanisms:M1: Industry Systems Research Teams (BSC, ...)M2: Industry System Research Teams (BSC, ...)M3: Rating/training Programs (EEBA, Energy Star, Consol, ...)M4: Professional Certification/Standards (NAHB, ASHRAE, ...)

**Estimated market share

EarlyAdopters

(1%)**

Lead Builders(15%)

Best Practice(35%)

StandardPractice

(50%)

M1 M2 M3 M4

AdvancedSystems

Test/Analysis

SystemPrototypes

Pre-ProductionPrototypes

SystemPrototypes

Pre-ProductionPrototypes

SystemHandbooks

andTraining

SystemHandbooks and

Training

Best PracticeDesign

Specifications

Best PracticeDesign

Specifications

StandardEquipment/MaterialsPackages

Innovative Emerging Proven Expected


0

1 0 0 0 0 0

2 0 0 0 0 0

3 0 0 0 0 0

4 0 0 0 0 0

5 0 0 0 0 0

6 0 0 0 0 0

7 0 0 0 0 0

8 0 0 0 0 0

9 0 0 0 0 0

1 0 0 0 0 0 0

1 9 9 5 1 9 9 6 1 9 9 7 1 9 9 8 1 9 9 9 2 0 0 0 2 0 0 1 2 0 0 2 2 0 0 3 2 0 0 4 2 0 0 5 2 0 0 6 2 0 0 7 2 0 0 8 2 0 0 9 2 0 1 0 2 0 1 1 2 0 1 2 2 0 1 3 2 0 1 4 2 0 1 5 2 0 1 6 2 0 1 7 2 0 1 8 2 0 1 9 2 0 2 0

Year

# Hom

es/Yea

r

Standard Pract ice

Best Pract ice

Lead Bui lder

Peer to Peer Diffusion


Test Houses

Community-scaleHousing

Production Housing

Test

Design

Build

Re-design

Cost and Performance Trade-offsAccelerate Development ofIntegrated Systems

Systems Engineering Process


System Performance FeedbackLong Term Testing

� Weather data� Room Temperatures� Energy Consumption

Short Term Energy � Tracer Gas � Co-heating/co-cooling� Calibrated Energy Analysis� System Diagnostics

50

60

70

80

90

100

110

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31Day

Deg

. F

Tin Tout-10

10

30

50

70

90

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31Day

Deg

. FInside Outside


Co-heating andCo-cooling


Tracer Gas Diagnostics

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

17 18 19 20 21 22 23 0 1 2 3 4 5 6 7 8

Hour of Day (Feb 9-10)

ACH

Master BR Door OpenAir Handler On

Master BR Door ClosedAir Handler On

Master BR Door OpenAir Handler On


0 .0 0

0 .1 0

0 .2 0

0 .3 0

0 .4 0

0 .5 0

0 .6 0

0 .7 0

18 0 6S a

t no o

n 1 8 0 6S u

n no o

n 1 8 0 6M o

n no o

n 1 8 0 6T u

e no o

n 1 8 0 6

H o u r

ACH

Pi lot House

Base Case House

N o rm al F urnace O p eratio n E lectric H eaters

P ilo t O utsid e A ir D uct D isco nnected and T a p ed O ff

A H F a n s O NO F F

A H F ans O N

Normal Furnace Operation Electric Heaters

Outside air duct disconnected and taped in pilot homeOFF

Fan ONFan ON

Tracer Gas Diagnostics


Van Geet Residence● High mass construction● Integrated mechanical system● High efficiency appliances and

lighting● Active solar hot water system

for DHW and radiant space heating

● Propane backup heat and generator

● Off-grid powered by photovoltaics


Mercedes Homes� CARB project in Rockledge, FL� Second set of prototypes� Four prototypes and one control

tested� Ducts in conditioned plenum truss� Cast-in-place concrete walls� Single pane, low-e windows

Standard Practice

Michelle Isle Prototype Lora Isle

Prototype


Civano ICS Solar Water Pre-Heater Study

� Instrumented system on model home with remote control of draw pattern

� Instrumented systems on eight occupied homes

Question: What is the energy contribution of the solar water heaters in the Civano community?

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

0.60

0.80

1.00

284

287

290

293

296

299

302

305

308

311

314

317

320

323

326

329

332

335

338

341

344

347

350

353

356

359

362

365 2 5 8 11 14 17 20 23

Daily Solar Fraction, Home 7

0

5

10

15

20

25

30

35

40

45

5:00 5:15 5:30 5:45

Time

Deg

C

Water temperature from collectors during daily evening draws


Building America Database

Wood, 2x4, 16 in o.c.25%

Wood, 2x4, 24 in o.c.0%

Wood, 2x6, 24 in o.c.50%

SIPs1%

Concrete Masonry2%

Other1%

Wood, 2x6, 16 in o.c.21%

Types of Wall Construction used in Building America Houses


Average SEER for cooling systems in Building America Houses

9

9.5

10

10.5

11

11.5

12

SevereCold

Cold Mixed -Dry

Mixed -Humid

Hot - Dry Hot -Humid

Climate Zone

SEER



0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

1995 1996 1997 1998 1999 2000 2001 2002

Year

Hou

ses/

Year

ActualEstimated



New NREL BA Publications� New BA Overview� ACEEE Paper � Shading and

Glazing� ASES Paper � Tierra Home

Analysis� Four NREL Technical

Reports:� BA House Performance Analysis

Procedure (draft)� Ventilation in BA homes (draft)� Tierra Homes Analysis� Habitat Denver Analysis (draft)


Building America Sponsored By

DOE Office of Building TechnologyState and Community Programs


Ren Anderson

Bob Hendron

Paul Norton

Michael Smith

Paul Torcellini

Kimberly Peterson

building america update - nrel · civano ics solar water pre-heater study Ł instrumented system on...

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