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Ask the Inspector: Shingle fatigue
Leader-Telegram
Duerkop is a licensed home inspector and serves as president and education director of the Wisconsin Association of Home Inspectors for the central and northern Wisconsin chapters. To submit a question to him, call 866-715-8222 or email ...

Burlington, NJ January 31, 2012 --- Infraspection Institute’s IR/INFO conference was recently held in New Orleans, Louisiana. IR/INFO 2012 marks the 23rd anniversary for the advanced training conference, technical symposium and technology expo.

Infraspection Institute’s IR/INFO conference was recently held in New Orleans, Louisiana. IR/INFO 2012 marks the 23rd anniversary for the advanced training conference, technical symposium and technology expo.

Weigh stations using infrared imaging to catch dangerous trucks
Northwest Cable News
State troopers plan to place a thermal imaging camera in the ground to help pinpoint problems on vehicles that pass through weigh stations. So far, the Washington State Patrol and the Washington State Department of Transportation have tested the ...

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Darien Home Inspector Finds Little Problems Before They Become Big Problems
Patch.com
Jeff Prince worked for 15 years as a bookbinder. He didn't plan to change careers. But as the printing industry shrunk, his job disappeared. Prince used this opportunity to take his career in a different direction, starting his own business in Darien ...

Seminar will introduce first-time buyers to real estate investment
The Daily Citizen
“We'll have two lenders there — Alliance National Bank and First Bank of Dalton — and a home inspector, Precise Home Inspections,” said Mike Maret, principal broker at Coldwell Banker/Kinard Realty. “So if anybody has any questions about home ...

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Home repairs: Which jobs come first?
CNN
"There's no homeowner's manual that tells you when to do what," says Naperville, Ill., home inspector and structural engineer Mark Waldman. Emergencies aside, the project that could cause the most damage and expense if left unfixed is the priority.

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Your Place: More about dampness in Shore home
Philadelphia Inquirer
Home inspector/engineer Harry Gross in Cherry Hill reminded me that we once talked about sealing off the crawl-space vents with vapor barrier and insulated walls as the best approach for this region. But when there is a lot of moisture, as there may be ...

Infrared Imaging Services LLC Helps Building Owners Keep “Green” by Performing ...
PR.com (press release)
“We are Certified Level III Thermographers and provide professional thermal imaging services to a wide variety of clients. In today's greener environment, it is important to realize that much of the insulation material removed from a building during a ...

Moose Lodge in Clifton honors new fire chief
NorthJersey.com
An infrared imaging camera costs approximately $4700, and the Lodge was able to raise a substantial amount to put toward the device. At a follow-up meeting the members contributed to the remainder. Thermal imaging cameras less than five years old are ...

Affinity Thermal Diagnostics protecting homes, businesses
Spencer Daily Reporter
Affinity Thermal Diagnostics provides you with an in-depth scan of your property conducted by an ITC Certified Building Diagnostic Thermographer using a high-end thermal imaging camera that is specifically made for building diagnostics.

DILLHYON v. DUNN
Leagle.com
4 The inspection contingency of the Offer to Purchase provided that the offer was "contingent upon a Wisconsin registered home inspector performing a home inspection of the Property, and an inspection, by a qualified independent inspector, ...

Thermal Imaging Equipment Manufacturing in the US Industry Market Research ...
PR Web (press release)
The Thermal Imaging Equipment Manufacturing industry has experienced strong growth over the five years to 2012, due to innovative products and improved demand from commercial and industrial markets. The widespread adoption of new commercial and ...

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Celte, Opgal to Deliver Innovative Thermal Imaging Solutions
AZoOptics.com (press release)
By Andy Choi Opgal Optronic Industries is a worldwide supplier of novel near infrared illumination and contemporary thermal imaging solutions for safety and security applications. It recently declared that it has entered into a reseller agreement with ...

7 deadly sins of property investment
Moneyweb.co.za
However, it is always advisable to have a professional home inspector to take a look at the property. “A professional inspector will be able to spot any problems that may otherwise go unnoticed, such as the structural integrity of the property.

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Ask the Home Inspectors: Why even order a home inspection?
Victoria Advocate
Instead of hiring a home inspector, though, the couple opted to save a bit of money and rely on knowledge gained from those do-it-yourself shows. They toured each room, turned on a few faucets, fired up the air conditioner and deemed everything seemed ...

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 in fluids. Let’s look at the most important of them and how that might affect what we see with our imaging systems:

• Velocity of the fluid

• Orientation to the flow

• Geometric shape

• Surface condition

• Viscosity

All of these factors are important to consider, whether you are a thermographer working on buildings, industrial equipment or both. For most of our work, the fluid in question is the air surrounding us and the surfaces we are inspecting. The transfer of heat between the air and the surfaces can be considerable and can also result in patterns that can be confusing if we are not paying close attention to convection.

This remarkable image, taken by one of my students, show changes in wall temperature caused by air currents moving around and through fiberglass batt insulation in the walls of a home. Interestingly, the blower door was not being used to depressurize the home at the time!

Of the five major influences, velocity typically has the greatest affect. Whether we work out-of-doors, where we must pay attention to the wind, or indoors where air currents can have a dramatic influence, the velocity of the fluid has a powerful affect on “h” and, as a result, on total convective heat transfer. The relationship is direct: increase velocity and you increase convective heat transfer.

A simple experiment demonstrates this. Put your hand in the air and notice what it feels like. Now wave it back and forth several times. Notice you can literally feel the difference in heat transfer—cooling in this case—caused by the increased velocity of the air movement. You have, in essence, increased “h” simply by waving your hand.

If you look at the upwind and downwind sides of any building or any piece of industrial equipment influenced by air currents and you’ll see differences in surface temperature—both warmer and cooler—related to velocity.

I have found it important to measure the velocity of air movements so that I better understand their influence. This can be done very easily using any of the simple “personal weather stations” now readily available in the marketplace. Kestrel in particular, makes several fine, reasonably priced products that work well.

A personal weather station, like this Kestrel brand model, provides a simple means of quantifying both wind and air currents.

Convection is both a large and an important topic so next week we’ll continue the discussion about “h” and other issues related to convection. In the meantime, please keep your thermal eyes open and watch for thermal images showing the influences of this powerful mode of heat transfer!

Thinking Thermally,

John Snell—The Snell Group, a Fluke Thermal Imaging Blog content partner

Atlanta Journal Constitution
Norcross man honored by Coast Guard for rescue at sea
Atlanta Journal Constitution
Seamen Charles Gray of Norcross (left), Jarrod Reed of East Liverpool, Ohio, and Pablo Taborda Jr. of Miami rescued five fishermen off the coast of Jamaica the night of Jan. 3. Seamen Charles Gray of Norcross, Pablo Taborda Jr. of Miami and Jarrod Reed ...

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Atlanta Journal Constitution
Men Named Shipmates of the Week After Rescue
Military.com
CAPE MAY, NJ -- East Liverpool, Ohio, native and two others were recognized as the Coast Guard's Shipmates of the Week for helping to rescue five fishermen off the southern coast of Jamaica Jan. 3 at 11 pm Seaman Jarrod Reed of East Liverpool, Ohio, ...
Basic Training Grads Named Coast Guard's Shipmates of the WeekCape May County Herald (press release)

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Mentor City Council, Administration Discuss Deer Culling
Patch.com
Any deer culling program in the city would require a permit from the Ohio Department of Natural Resources. Moreover, to get the permit, the city would need an estimate as to how many deer live in the city. An infrared flyover would cost the city about ...

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