BTO Window R&D Overview and Activities. Marc...Space Heating 19.8% Lighting 17.7% Space Cooling...

1U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY

BTO Window R&D Overview and ActivitiesMarc LaFrance


Buildings Natural Gas Use: 60% of U.S. totalBuildings Electricity Use: 75% of U.S. total

U.S. Building Energy Bill: $380 billion per year

Envelope & Windows Impact Over 50% of Loads

Building Energy UseU.S. Building’s Energy Consumption and Expenditures

Space Heating 19.8%

Lighting 17.7%

Space Cooling 12.7%Water Heating 9.6%

Electronics 7.8%

Model Adjust 6.3%

Refrigeration 5.8%

Cooking 3.4%

Wet Cleaning 3.3%

Ventillation 2.8%Computers 2.3%

Other 8.5%

Total: 38.8

Quads


BTO Developing an Updated Windows and Opaque Envelope R&D Roadmap

• BTO uses roadmaps to guide strategy for R&D programs, criteria used in FOA

• R&D early stage research but programs should lead to commercialized energy efficient technologies

• Core window objectives expected to stay fundamentally the same, cost effective highly insulating dynamic windows along with daylighting

• Recent Roadmap Meeting Summary –https://energy.gov/eere/buildings/downloads/windows-envelope-rd-opportunities-workshop


Current Roadmap Goals/Targets – Review & Update Needed

Technology 2025 Installed Cost Premium Target 2025 Performance Target

Highest Priority R&D Area

R-10 Windows

Residential: ≤ $6/ft2

Commercial: ≤ $3/ft2

over typical 2010 windows

• Residential: R-10, VT > 0.6• Commercial: R-7, VT > 0.4• Comparable weight and thickness

to currently installed base

High Priority R&D Areas

Dynamic Windows

Windows: ≤ $8/ft2

Window Films: ≤ $2/ft2

over a standard IGU

• ΔSHGC > 0.4• VT bleached state > 0.6

(residential) and > 0.4 (commercial)

Visible light redirection (commercial)

≤ $5/ft2

over standard window or shadeincluding lighting and controls costs

50% reduction in lighting energy use over a 50-ft floor plate


Merit Review Completed: LBNL Core Windows LabNREL Enabling Core Windows Lab

ZX

Y

+ + + +

Tools and Knowledge Base

Core Capabilities: Materials R&D, Facilities, Testing, Simulation Models

Innovative Products High Perf

BuildingsManuf.

A/E Firms

Ratings, Labels, Codes, Standards,Energy Star, Incentives,…


Drop-In “Thin Lightweight Triple”

“upgrade” all R3 double glazed windows to R4-7 without redesign

• Platform: U: ~.10-.15• Thin float glass

– .3, .5, .7, 1.1 mm• Multiple suppliers• 2 Low-E coatings• Krypton gas fill• Non-structural center

– 2 seals, not 4• Infrastructure exists• “Affordable”• Manufacturer

prototypes under evaluation

Surface #1 #2 #3 #4 #5 #6

0.7mm thin glass center layer

Foam spacer

Low-e

Butyl sealant


Super-insulating frame with highly insulated glazing

Two low-e, Thin glass, single seal, Krypton gas

AerogelOne low-eVacuum

U.S. INSULATING GLAZING Landscape Today:

TripleTwo low-e

Three low-e

Market TodayFutureEmerging

Two low-eVacuum Hybrid

Note: low-E coated polyester film can be alternative middle glazing.

Single Double

U: 0.2-0.06U: 0.5-0.3

U: 0.2-0.1


Financial Opportunity Announcements

• Sign up for notifications

• https://eere-exchange.energy.gov/

• Recent BENEFIT 2018, underway, can’t discuss proposals under evaluation, closed to proposals– Two step process, anyone discouraged and that did not

submit can have private conversation to discuss their technology

– For reference, search for “DE-FOA-0001825: Buildings Energy Efficiency Frontiers & Innovation Technologies (BENEFIT) – 2018”


Current Projects

• Dynamic glazings– Stanford/University of Colorado – reversible metal plating

(BENEFIT 2017)– NREL, Thermochromic PV (Lab Call 2018)

• Highly Insulating– V-Glass, VIG (SBIR Phase II, 2018)– Oakridge National Laboratory, VIG (Lab Call 2018)

• Enabling Research– WCMA/AERC, Attachment Ratings (2014)– PNNL with LBNL & ORNL, attachment field tests (Lab Call

2018, ET/RBI)– LBNL with ORNL, highly insulating multifamily field tests

(Lab Call 2018)


Summary

• Stay engaged with BTO core activities for Window R&D

• New breakthrough materials and coatings may have many opportunities for wide range of new technologies

• Need to figure market entry points early

• Policies take a long time to get implemented to help support market introduction


Contact Information

P Marc LaFrance, CEMAdvanced Technology and Energy Policy ManagerUS Department of Energy1000 Independence Ave, SWWashington, DC [email protected] 240-474-2177

BTO Window R&D Overview and Activities. Marc...Space Heating 19.8% Lighting 17.7% Space Cooling...

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