New Imaging Tools to Measure Building Performance and Envelope

Integrity

AIA/CES PROGRAM PURPOSE

AltusGroup Inc. and FLIR are Registered Providers with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

Learning Objectives: • Provide an overview of basic infrared terms and thermal imaging

technology • Discuss how IR measurement technology can be used to detect

building envelope leaks: air, water, and heat • Detail examples of several commercial building systems projects

where IR technology was used to determine building energy efficiency and heat loss

• Contrast the performance of CFRP high performance precast in terms of energy efficiency using IR versus alternative building systems: curtainwall, block and brick, etc.

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It’s easy to spot defects on this structure.

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What if the defects aren’t so obvious?

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Here we have an obvious roof leak

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How do you find the leak if it is not so obvious?

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Thermal Imaging can help! Thermal Imaging Can Help

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Finding Leaks

Heat leak Air leak Water leak

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What are Thermal Imagers?

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Thermal Imagers use technology that allows us to “see” heat.

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Thermal imaging is NOT X-Ray vision.

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How About Cooler Areas?

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How Thermal Cameras Work

Photons Impact and HEAT the Detector Element.

E = εσT 4Stefan - Boltzmann Law

Advanced Calculations

22 39 44 86 35 25

23 56 48 53 46 58

25 45 84 35 45 55

22 39 44 86 35 25

23 56 95 53 22 58

25 28 81 35 45 55

22 39 44 86 35 25

23 56 48 53 46 58

25 45 84 35 45 55

22 39 44 83 35 25

23 56 95 53 22 58

25 28 81 35 45 55

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Resolution and Accuracy

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Better Image = Greater Accuracy

Temperature Data Averaged From One Pixel Covering Target Area

31.1°C

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Better Image = Greater Accuracy

More Pixels on Target Improves Measurement

40.8°C

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Better Image = Greater Accuracy

More Pixels Means More Detail, More Accuracy

49.3°C

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1960’s 1970’s 1980’s 1990’s 2000’s

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Thermal cameras are getting smaller

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… and more affordable

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Inspect Ceilings, Walls, Floors

23

Ceiling Wall

Floor

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Detect Mold Mildew

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On the Jobsite

• Tools designed for site work • Monitor conditions • View and measure site

environmental conditions before and during installation

• Confirm proper installation • Monitor sub-contractor work

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When customer facing: 50% of feedback from contractors says that thermal images shown to customers increases credibility

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For the Owner

• Efficiency in the quoting process – Find the issues faster – Better scope of work – Supporting documentation

• Fewer change orders and/or faster turn around

• Credibility – A picture says it all before and after

AIA/CES Credit

This concludes the CES portion of the program. Credit earned during this program will be reported to CES Records for AIA members. Certificate of completion is available on request.

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Turn of the century moisture meter technology

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Moisture Meter Inspection will confirm and quantify the problem, but only measures

a single point at a time.

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Thermal Imaging Inspection can quickly point out problems, but it is sometimes difficult to distinguish

moisture issues from thermal issues.

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What if? +

We call that IGM. Infrared Guided Measurement

FLIR LEPTON® Chip

Moisture Meter

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Do you need both?

no maybe yes ✔ ✔ ✔

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yes ✔ When scanning physically large or distant items

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yes ✔ When high resolution is required to see smaller problems

MR160 C2 E6

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Is it wet, or is it cold? maybe ✔

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maybe ✔ When your job crosses multiple disciplines

Heat leak Air leak Water leak

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Who is FLIR?

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FLIR Offers Solutions for …

Military and Defense

The Outdoors Maritime

Your Home

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FLIR Offers Solutions for …

Work