“h” or the Convective Heat Transfer Coefficient

When heat transfer occurs in fluids—defined simply as non-solids—the rate and total transfer are governed by several factors, two of which are easily known: temperature difference and area. More challenging to define precisely is “h” or the Convective Heat Transfer Coefficient. This all-important variable is the amalgamation of a number of influences on heat transfer [...]

Learning From Each Other

One of my Thermal Resolutions for 2011 was as follows:
“I’ve learned nearly all I know about thermography from others and have, honestly, barely scratched the surface, so I resolve to learn more from my professional colleagues.”

I was fortunate to visit the home of Sir William Herschel in the Fall of 2010. Here I am [...]

Chip Wade Inspects a Commercial Property

Many of the same principles of a thermal inspection in a home can be applied to a commercial property inspection.  In this video, Chip Wade shows you how you can take your business to the next level by offering commercial property inspections. He spots a problem in a warehouse that is being converted to an [...]

Chip Wade Uncovers Common HVAC Problems

In our fifth video presented by Chip Wade, common problems in a home’s HVAC system are easily unveiled with the use of a thermal imager. Especially in a home that is 100 years old, inefficient vents and ducts are likely to be draining money on your energy bill. Chip spots a couple of problems that can [...]

Episode 4: Chip Wade Inspects for Moisture Damage

In the fourth video of our series, Chip Wade demonstrates how we can use a Fluke TiR1 to inspect for moisture damage on the inside of a home. As he describes, most homes have been repainted several times, and water damage can be easily hidden from the naked eye. Using the thermal imager, a quick [...]

Episode 3: Chip Wade Inspects Building Envelope and Electrical Outlet

In the third video in this series, Chip Wade starts by showing us some easy spots to inspect that might be draining money from your energy bill. First, he inspects the building envelope and points out what appears to be a common problem with insulation. He then goes inside and scans the electrical outlets to [...]

Reflecting on Electromagnetic Radiation

Reflections, no matter what part of the electromagnetic spectrum we are operating in, are part of life. All materials are partially reflective of some wave lengths and none are perfectly reflective.

We are all familiar with mirrors, but watch a baby or a puppy when they are first looking into a mirror and learning how to [...]

Episode 2: Chip Wade Discusses Ease-of-Use

In the second part of a six-part series, Chip Wade discusses the importance of easy-to-use navigation in a thermal imager. He showcases specific features of the T1R1 that helps users easily and accurately take thermal images, and similar to a digital camera, users can swiftly download their images directly from the memory card.

The T1R1 also [...]

Fall is in the Air (and the Wind), Part Two

Last week we focused on the affect radiational cooling and heating has on surface temperature. If you still have any doubts about this, just go outside in the sun and again on a clear night and observe the great variation of temperatures you find on your thermal images. Many of them are related to radiation.

When [...]

Fall is in the Air (and the Sky)

As the Northern Hemisphere edges quickly into Fall—and here in Vermont those changes are undeniable despite a week of sunny days—I find it useful to consider the factors that determine the temperature of the objects we so often look at with our imagers. It is not uncommon, for example, to find one elevation of a [...]