Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Building Survey Report For Sample Report done by John Cannamela Level II Thermographer Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 What is Infrared? IR is part of the electromagnetic spectrum discovered in the 1800’s IR 101 The IR imager sees emitted energy in the IR spectrum range from (shortwave) 3-5 microns (longwave)7-13 microns. The amount of energy is seen through the imager. The reason everything thing is colored is to give the eye something to interpret. Interpretation is key with Thermography. How Infrared can help Commissioning Commissioning is the process where by the system is put through its sequence of operation at its design. There are many tools and techniques to start up and check out systems. Buildings all have their own special issues not in the design, that’s why we commission. Infrared Thermography can help as a great tool to help locate and even show why certain things don’t work properly. Building HVAC 101 Heating Ventilation & Air Conditioning Buildings are conditioned by adding or removing heat from a given space through a medium. In this case the medium is air. The air is circulated through a refrigerated coil or DX coil or chilled water coil, which removes heat and transfers the heat through the refrigerant/water to the condenser coil/cooling tower, via a fan/pump. Dirty filters or poor air flow causes coils to freeze and Compressor failure. Why can we see water? Water is a conductor and transfers heat. Heat or the lack of heat is what thermal imagers see. When water, a conductor, contacts a non-conductor such as wood or sheetrock-we see the heat transfer which can be colder or hotter than the surface of which it contacts. The color of choice for cold is blue and red for hot. Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Sample City Thermographer Level II John Cannamela www.infraredsurvey.com 704-200-6367 Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Summary This 1 hour sample walkthrough revealed some minor issues. This is a new building with the latest technology and controls. However even the newest building can be fine tuned or some issues can be taken into account for future designs. The point of this survey is that it only took an hour with the use of the infrared camera and HVAC commissioning experience. This would normally involve more time. Energy issues have to be looked at as a system and multiplied by the scope of the project. Minor issues. 1 Supply air Duct leak in mechanical room. 2 Found a zone running in heat with average space temp @ 73- zone set point was @ 87 degrees. BAS should catch this unless the controls need to be rechecked. 3 All thermostats are giving off heat although minor, multiple zones add up quickly 30 stats per floor times 6 floors times “X” number of buildings and also the transformers needed to power zones are heat sources. The display models are a great feature however certain zones may not require a display. 4 Main lobby has a throw pattern that should be more evenly distributed. The concentration of cold/hot air in one spot does not present the best temperature control and can effect condensation and warp certain materials. Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Description: Mechanical Room: possible cold air leak at duct seam at wall penetration. A 1 inch leak can add up to 1500 CFM or more, over a day’s time and creates noise. Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Description: Perimeter zone is in heat. Although a minor issue if left unchecked excess energy loss may add up over a period of time. Building automation monitoring should catch these issues. Of course comfort is a factor. Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 Description: All the thermostats generate heat, understanding this is a function on the tstat .Nondisplay type thermostats would have less heat load considering there may be upwards of 100 or so devices in a building on 24/7 times “X” number of buildings can add up to quite a bit of savings. Sample Leed Building Survey‐ Infraredsurvey.com John Cannamela 2009 nd Air throw pattern in front lobby 2 level security area. This pattern would be better if diffused more evenly. The effect on certain materials, wood etc may cause condensation or warping.
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