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Surface temperatures of window specimens: infrared thermography laboratory measurements

Griffith, B.T., H. Goudey and D. Arasteh
2002
ASHRAE Trans


Griffith, B.T., H. Goudey and D. Arasteh, (2002), "Surface temperatures of window specimens: infrared thermography laboratory measurements", ASHRAE Trans.
Abstract:

Temperature distribution data are presented for the warm-side surface of three different window specimens. The specimens were placed between warm and cold environmental chambers that were operated in steady state at two different standard design conditions for winter heating. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) temperature conditions were 21.1¡ãC (70¡ãF) and -17.8¡ãC (0¡ãF) on the warm and cold sides, respectively. The International Standards Organization (ISO) temperature conditions were 20.0¡ãC (68.0¡ãF) and 0.0¡ãC (32.0¡ãF) on the warm and cold sides, respectively. Surface temperature maps were compiled using an infrared thermographic system with an external referencing technique, a traversing point infrared thermometer, and thermocouples. The infrared techniques allow detailed, nonintrusive mapping of surface temperatures. Surface temperature data are plotted for the vertical distribution along the centerline of the window specimen. This study was conducted to improve and check the accuracy of computer simulations for predicting the condensation resistance of window products. Data collected for a calibrated transfer standard showed that convective effects outside the window gap are important for predicting surface temperatures.



Related Concepts

  • capillary break
  • condensation and evaporation
  • measurement: Infrared
  • measurement: infrared thermography
  • windows, doors, fenestration

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Author Information and Other Publications Notes
Griffith, B. T.
Building Technologies Program, Energy and Environment Division, Lawrence Berkeley National Laboratory, University of California Berkeley, CA 94720 USA
  1. Assessment of the technical potential for achieving net zero-energy buildings in the commercial sector
  2. Contrasting the capabilities of building energy performance simulation programs
  3. Framework for coupling room air models to heat balance model load and energy calculations (RP-1222)
  4. Gas-filled panels: an update on applications in the building thermal envelope
  5. Issues associated with the use of infrared thermography for experimental testing of insulated systems
  6. Surface temperatures of insulated glazing units: infrared thermography laboratory measurements  
Goudey, H.
  1. Highly insulating glazing systems using non-structural center glazing layers  
Arasteh, D.
  1. A database of window annual energy use in typical North American residences
  2. Future advanced windows for zero-energy homes
  3. Gas-filled panels: an update on applications in the building thermal envelope
  4. Highly insulating glazing systems using non-structural center glazing layers
  5. Issues associated with the use of infrared thermography for experimental testing of insulated systems
  6. State-of-the-Art Highly Insulating Window Frames ¨C Research and Market Review
  7. Surface temperatures of insulated glazing units: infrared thermography laboratory measurements
  8. Window-related energy consumption in the US residential and commercial building stock
  9. Zero energy windows  





CRDBER, at Building Envelope Performance Laboratory, CBS, BCEE, ENCS, Concordia, April 2010