![]() We would love it if you continued to visit the site, as we plan on implementing new ways to interact with the site and each other in the future. ![]() There have been over 1.7 million messages on the forums, over 140,000 topics, with over 53,000 members joining since 1999. We would like to thank all the active participants of these forums over the years for their friendliness, helpfulness, and community spirit. However, the technology behind the platform we are using is, unfortunately, incompatible with the forum. AP has launched a new and improved website that offers a better layout, and enhanced functionality. SHGC does not reference single pane, double strength glass, and can be used to calculate energy performance for all times of day and year because it takes the angles of the sun and window treatment into account.We’re very sorry to have to inform you that we are no longer able to continue running the AP forums. Shading Coefficient (SC): The previously used term “Shading Coefficient” has been replaced by SHGC, which is a more useful and accurate way of describing the shading effect of shades and all types of windows and glass. The lower the SHGC, the more effective a solar screen fabric is at stopping the heat from entering the room. Solar Heat Gain Coefficient (SHGC): Indicates the amount of solar radiation that enters an interior space through both the window and the shade in the form of heat, compared to the total amount of solar radiation. A low figure (<10) indicates effective glare reduction. ![]() ![]() VLT is impacted by the openness factor, fabric color, and the amount of light that transmits through the fabric. Visible light transmittance (VLT): The percentage of the available visible light allowed to pass through the solar screen shade and window combined. Fabric color itself does not affect openness across a fabric product line. The more open the fabric, the more solar radiation passes through open space rather than fabric, affecting the overall performance and amount of glare protection, heat protection, and view-through. Openness factor (or Density): Measurement of the relative area of the fabric’s openings, or holes. The total value of all 3 percentages equals 100% of the available solar radiation. A low percentage indicates fabrics that absorb little solar energy.Īll of the available solar radiation is either transmitted through, absorbed by or reflected by the fabric. Solar absorptance (As): The proportion of solar energy absorbed by the fabric alone. A high percentage indicates fabrics that reflect solar energy well. Solar reflectance (Rs): The proportion of solar energy reflected away by the fabric alone. A low percentage indicates fabrics that reduce solar energy well. Solar transmittance (Ts): The proportion of solar energy transmitted through the fabric alone. The visible and invisible combined, or “spectrum”, make up what we see as light, feel as heat, and UV (ultraviolet) rays that are not seen or felt, but have damaging effects on skin, eyes and furnishings. Some of it is visible, some is not visible. What we call “sunlight” is the energy, or radiation that comes from the sun. Part of the information collectively known as “fenestration data” Understanding solar/optical/thermal factors
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |