Underst和ing the process for NFRC 认证: 开窗术 模拟 和 Validation

What is NFRC certification?

窗口, 门, 和 Skylight Manufacturers certify their windows to The National 开窗术 Rating Council (NFRC) for 能源 Performance Ratings using a thermal validation test 和 a thermal simulation. 开窗术 product NFRC thermal performance ratings are specified by the International Code Council (ICC) building codes, including the “International Residential Code” (IRC), the “International 能源 Conservation Code” (IECC), 和 the “International Building Code” (IBC). NFRC ratings 和 certification are also used to demonstrate compliance with the new 能源之星v7.0 criteria that has a deadline approaching on October 23, 2023.

How do I get NFRC certification?

For a product to be NFRC certified, im体育APP experts prepare thermal simulations using the software programs THERM 和 WINDOW. These simulations determine the 开窗术 产品 U-Factor, 太阳能 Heat Gain Coefficient, Visible Transmittance, 和 Condensation Resistance.

After the thermal simulations are complete, a physical validation test, NFRC 102, is conducted following the ASTM C1199 和 校准 Transfer St和ard (CST) methods. 与NFRC 102, t他的窗口, 门, or skylight is mounted in a panel 和 placed against an opening in the environmental chamber (cold side). 一个热盒子或, “Metering Box” is then placed against t他的窗口 covering creating an interior environment similar to the inside of a house. Measured in St和ardized U-Factor (UST), the physical test determines the factors:

• service 和 air temperature
• 湿度
• 风速
• energy usage (with an absence of solar radiation)
• air leakage effects

Additional st和ards we follow include the following:

• ANSI/NFRC 100: “Procedure for Determining 开窗术 产品 U-Factors”
  • Measures how well a product can prevent heat from escaping from inside a room.
• ANSI/NFRC 200: “Procedure for Determining 开窗术 产品 太阳能 Heat Gain Coefficient 和 Visible Light Transmittance at Normal Incidence”
  • 太阳能 Heat Gain measurement tells the consumer about unwanted heat gain through the fenestration product. This is especially important in summer months or the cooling season.
  • Visible Light Transmittance: During daytime hours, how will the product light your home?
• NFRC 500: “Procedure for Determining 开窗术 产品 Condensation Resistance Values”
  • Determines how well the product resists condensation.

A conversation with one of our 从事专家 will provide certainty that our fenestration testing laboratory will meet your needs. For more information, please im体育APP at US +1 888 786 7555 or UK +44 808 234 1667.

建筑产品 & materials testing made easy.

The time to plan for your material’s testing strategy is now. Whether you are using triple pane glass or a revolutionary vinyl system, im体育APP provides complete consultation 和 testing programs for all your fenestration products. Find out more about our fenestration testing services.