Upload
amy-miller
View
219
Download
0
Tags:
Embed Size (px)
Citation preview
Thermal Imaging & Leak Detection
Nigel Hewitt
Technical Manager
What is Thermography?
• Infrared Thermography is the science of acquistion and analysis of thermal information from non-contact thermal imaging devices
What is a Thermal Image
• Photography can be described as writing with Light
• Thermography can be described as writing with Heat
Heat Transfer Modes
Radiation
Conduction
Convection• Conduction
• Convection
• Radiation
Infrared Thermography
• Building materials radiate energy
• Wet materials retain heat and change slower than dry areas of the same material.
• This allows us to locate an area with a moisture problem
Visual Image
These two glasses visually appear the
same.
Thermal Image
Thermal Imaging with an infrared camera.
“ Paints a different picture.”
Infrared Thermography
• IR thermography can be used to trace the influx of moisture to find the ultimate source of leakage with little or no physical disassembly of the premises.
• With current models of IR cameras, images can be made in seconds.
Water Damage
High Ceiling Water Damage
Infrared Thermography
• 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.
Water Damage
See the Drying taking place!
Dry a building more effectively and more efficiently!
The Drying Process
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
Moisture Detection on a Roof
Damaged/Missing Insulation
Building Envelop Inspection
Water leak in a concrete slab
Hydrogen Tracer Gas Leak Detection
Acoustic Leak Detection
Additional Equipment
Non-Destructive Moisture Detection
• Advantages– Quick– Non-evasive– Does not require
relocation of the occupant or the occupant’s contents
– Helps define actual source and defines its progression
• Disadvantages– Cannot see
through walls; only detects surface temperature differentials
– Cannot detect subsurface damage (i.e. mould or structural damage)
Any Questions
Thank You