Thermal Imaging (Updated)1

8/17/2019 Thermal Imaging (Updated)1

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Thermal Imaging &Trace & Access

Nick Jeffery

Training Manager


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What is Thermography?

• Infrared Thermography is the science of

acquistion and analysis of thermalinformation from non-contact thermal

imaging devices


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What is a Thermal Image

• Photography can be described as writing with

Light

• Thermography can be described as writing with

Heat


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Heat Transfer Modes

Radiation

Conduction

Convection• Conduction

• Convection

• Radiation


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Infrared Thermography

• Building materials radiate energy

• Wet materials retain heat and change slowerthan dry areas of the same material.

• This allows us to locate an area with a

moisture problem


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Visual Image

These two glasses

visually appear thesame.


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Thermal Image

Thermal Imaging with

an infrared camera.“ Paints a different

picture.”


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• IR thermography can be used to trace the

influx of moisture to find the ultimate source

of leakage with little or no physicaldisassembly of the premises.

• With current models of IR cameras, imagescan be made in seconds.


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Water Damage


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High Ceiling Water Damage


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Grey Scale


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Grey Scale

• Temperature Range

Camera is operating in

• Composition of Photo

• Focusing of the Picture


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Colour Palette


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Colour Palette


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Isotherm


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Altered Isotherm Range


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• IR thermography can then be used to

accurately monitor the drying process.

• IR cameras can inspect places that

can’t be physically reached with a

moisture meter.


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Water Damage


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See the Drying

taking place!

Dry a building more

effectively and

more efficiently!

The Drying Process


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Thermal Imaging

• Where can it help us

– Identifying point of water ingress

– Track spread of water

– Identifying maintenance issues

– Identify issues with insulation

– Identify areas of air infiltration

– Assist with trace and access


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The Drying Process


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The Drying Process


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The Drying Process


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Moisture Detection on a Roof


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Damaged/Missing Insulation


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Building Envelop Inspection


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Water leak in a concrete slab


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HVAC & Plumbing

• With thermal imagers it's easy to scan an entirebuilding to see the relation of HVAC system,

building envelope, and plumbing issues


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Building Diagnostics

• Buildings may be quickly and thoroughlyscanned using a thermal imager, identifying

problem areas that can't be seen by the naked

eye


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Energy Auditing & Home Inspection

• Excessive air leakage can account for up to half

of the energy consumed to condition

buildings. The leakage pathway is often complex

and, without thermal imaging, extremely difficult

to visualize.


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Property & Facility Management

• Thermal imagers are a valuable tool in predictive

maintenance of electrical, mechanical, and

structural systems, to detect problems, prevent

downtime, guide corrective action, and increase

work safety.


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Moisture & Restoration

• The presence of moisture in building envelopes,

either from leakage or condensation, can have

serious consequences. With infrared images,

water damage is easily detected


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Hydrogen Tracer Gas Leak

Detection

Acoustic Leak

Detection

Additional Equipment


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Non-Destructive Moisture Detection

• Advantages

– Quick

– Non-evasive

– Does not requirerelocation of the

occupant or the

occupant’s contents

– Helps define actualsource and defines

its progression

• Disadvantages

– Cannot see through

walls; only detects

surface temperaturedifferentials

– Cannot detect

subsurface damage

(i.e. mould orstructural damage)


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Final Points

How Much Does The Service Cost

What Coverage Do We Have

Thermal Imaging (Updated)1

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