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An Introduction to Thermal Imaging


first_img This article is only available to GBA Prime Members Start Free Trial Already a member? Log in Energy auditors and insulation contractors have been using infrared cameras to diagnose home-performance problems for over 30 years. Without opening up your walls or ceilings for inspection, a trained specialist can use one of these cameras to locate insulation voids, air leaks, moisture intrusion, thermal bypasses, and thermal bridges. It’s even possible to use an infrared camera to locate leaks in hydronic tubing embedded in a slab.These tools are known by a variety of names, including infrared (IR) cameras, thermographic scanners, and thermal imaging devices. An image produced by such a camera is called a thermogram, and a trained user of the device is called a thermographer.Although many people assume that infrared cameras measure surface temperatures, that’s not really how the tools work. An IR camera actually measures the intensity of infrared radiation (radiant energy) being emitted by the surface it is aimed at.Academic researchers began using infrared cameras to diagnose thermal envelope defects in the late 1970s, using cameras that cost more than $25,000 each. The cameras were cumbersome devices that were cooled by liquid nitrogen.MORE INFORMATIONGBA Product Guide: Infrared CamerasRESNET Interim Guidelines for Thermographic Inspections of Buildings“Getting Started in Infrared” by John SnellSolving Moisture Mysteries with an Infrared CameraThermographic Inspections“How to Conduct a Roof Moisture Inspection Using Infrared Thermography”“Infrared Guidebook For Building Applications”Blower Door BasicsAs new models of IR cameras were developed, prices began to drop. Gautam Dutt, one of the original “house doctors” at Princeton University, recalls, “For an infrared camera, we used a Magnavox unit marketed by Aga, the Aga 110. It cost about $13,000. It was expensive equipment, but it was cost-effective. The first thermal bypasses that I discovered took me weeks to discover, crawling through attics. Another one of our teams,… center_img Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details.last_img read more


Embattled Olympic boxing body picks Russia for 2019 worlds


first_imgRobredo: True leaders perform well despite having ‘uninspiring’ boss PLAY LIST 02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games Don’t miss out on the latest news and information. FEU Auditorium’s 70th year celebrated with FEU Theater Guild’s ‘The Dreamweavers’ Ethel Booba on hotel’s clarification that ‘kikiam’ is ‘chicken sausage’: ‘Kung di pa pansinin, baka isipin nila ok lang’ Trump strips away truth with hunky topless photo tweet View comments FILE – This a Sunday, Aug. 21, 2016 file photo of AIBA President Ching-Kuo Wu as he poses for picture with referees in the ring after the final matches at the 2016 Summer Olympics in Rio de Janeiro, Brazil. The embattled governing body of Olympic boxing has picked Russia to host the 2019 men’s world championships, amid reports of a no-confidence vote against President Ching-Kuo Wu. The International Boxing Association, known as AIBA, says its executive committee chose Sochi to host the two-yearly event. (AP Photo/Frank Franklin II, File)MOSCOW — The embattled governing body of Olympic boxing has picked Russia to host the 2019 men’s world championships, amid reports of a no-confidence vote against President Ching-Kuo Wu over concerns about the Switzerland-based body’s finances.The International Boxing Association, known as AIBA, said its executive committee chose 2014 Winter Games host city Sochi to stage the biennial event. The 2017 edition opens Aug. 25 in Hamburg, Germany.ADVERTISEMENT Lacson: SEA Games fund put in foundation like ‘Napoles case’ AIBA said a statement would be made later Tuesday.Wu and AIBA have repeatedly denied claims of a potential financial crisis for the organization due to investors wanting to call in sums of several millions of dollars.In other hosting decisions Monday, AIBA awarded both the 2021 men’s world championships and 2018 women’s championships to New Delhi, India. The 2019 women’s worlds will be staged in Trabzon, Turkey.ADVERTISEMENT Marcelino twins get the job done against Saladocenter_img LATEST STORIES MOST READ National Coffee Research Development and Extension Center brews the 2nd National Coffee Education Congress Robredo should’ve resigned as drug czar after lack of trust issue – Panelo AIBA’s ruling committee, meeting Monday in Moscow, also picked the Russian capital to host its 2018 congress of member federations.An AIBA statement on the hosting decision did not mention a reported rebellion against Wu.FEATURED STORIESSPORTSSEA Games: Biñan football stadium stands out in preparedness, completionSPORTSPrivate companies step in to help SEA Games hostingSPORTSWin or don’t eat: the Philippines’ poverty-driven, world-beating pool starsThe New York Times said a 12-2 vote was passed Monday against Wu, who has led AIBA for 11 years.The Taiwanese official is also a longstanding International Olympic Committee member who has sat on its executive board since 2012. He was one of six candidates in the IOC presidential election in 2013. El Nido residents told to vacate beach homes Sports Related Videospowered by AdSparcRead Next Church, environmentalists ask DENR to revoke ECC of Quezon province coal plantlast_img read more