|Title||Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools|
|Publication Type||Journal Article|
|Year of Publication||2008|
|Authors||Arlid Gustavsen, Dariush K Arasteh, Bjørn Petter Jelle, Dragan C Curcija, Christian Kohler|
|Journal||Journal of Building Physics|
While window frames typically represent 20-30% of the overall window area, their impact on the total window heat transfer rates may be much larger. This effect is even greater in low-conductance (highly insulating) windows which incorporate very low conductance glazings. Developing low-conductance window frames requires accurate simulation tools for product research and development. Based on a literature review and an evaluation of current methods of modeling heat transfer through window frames, we conclude that current procedures specified in ISO standards are not sufficiently adequate for accurately evaluating heat transfer through the low-conductance frames.
We conclude that the near-term priorities for improving the modeling of heat transfer through low-conductance frames are:
|LBNL Report Number|| |