The hot box

The Hot Box by SAFIERA is used to test energy efficiency of fenestration elements

The AAAMSA Group established the South African Fenestration and Insulation Energy Rating Association (SAFIERA) to support its drive to promote energy efficiency in the building industry. SAFIERA’s primary goal is to provide a fair, accurate, and reliable energy performance rating system.

The energy performance rating process is based on the complementary use of computer simulation and physical system testing to establish energy performance ratings for fenestration and thermal insulated building envelope systems.

The formation of the association has led to an investment by the AAAMSA Group for the construction and commissioning of its flagship RGHB test facility. The RGHB, located at the Thermal Test Laboratory (TLL) on the CSIR campus, can be used to determine the heat transmission values (U-values) of most building envelope systems in accordance with ASTM C 1363-05 and ASTM 1199.

Test specimens are mounted in a test frame between two climatic chambers, exposing the one side of the test specimen to typical room conditions and the other side to typical cold external conditions respectively.

Room conditions are typically 21°C and airflow conditions representing natural convection, while the cold external conditions are typically -18°C and airflow velocities of up to 20 km/hr.

By carefully calibrating and characterizing the RGHB, it is possible to determine the comparative and absolute U-values of various specimens in a controlled environment.

Although the RGHB is currently configured to test fenestration elements, it can easily be reconfigured to test practically any other insulated building envelope system. Tests are normally performed for building envelope systems in a vertical orientation, but by rotating the RGHB, measurements can also be performed for the test specimen at any inclination in between vertical and horizontal.

To allow comparison of the results of the fenestration testing, the standard dimensions for fenestration specimens are 1195mm wide x 1495mm high; with a tolerance of 2mm. Manufacturers should ensure that the specimens presented for testing have been successfully tested for air leakage.

The maximum specimen dimension that can be tested in the RGHB is 4100mm wide x 3600mm high. For non-standard test specimens and tests, it is important for manufacturers to consult with TTL prior to the manufacturing

Previous story
keyboard_arrow_upForever beautiful
keyboard_arrow_downForever beautiful

Aluwood Projects' new aluminium garage door is ready to set the market ablaze with its revolutionary design and wood look finishes

Next story
keyboard_arrow_upCreating space
keyboard_arrow_downCreating space

The heart of the BETA® Drywall System is the galvanised steel framework with floor tracks and vertical studs that are assembled to form a strong structure for the assembly of a wide range of partitioning designs

keyboard_arrow_upHigh-speed door solutions from Maxiflex are cool!
keyboard_arrow_downHigh-speed door solutions from Maxiflex are cool!

High-speed roll-up doors from Maxiflex are helping to maintain constant temperatures inside the cold storage and refrigeration areas of Makro Riversands and Makro Springfield located in Gauteng and Kwazulu-Natal (KZN) respectively.

keyboard_arrow_upa.b.e. launches new white cement on SA market
keyboard_arrow_downa.b.e. launches new white cement on SA market

abe CEM-blanc is a general-purpose white Portland cement that provides superior early-strength with added aesthetic and decorative opportunities offered by its colour tone, high strength and durability.

keyboard_arrow_upBuilding the business case for housing microfinance in sub-Saharan Africa
keyboard_arrow_downBuilding the business case for housing microfinance in sub-Saharan Africa

A new study from Habitat for Humanity says that housing microfinance can and should become a mainstream offering for financial institutions in Sub-Saharan Africa as they respond to growing housing needs in the region, particularly from poor people.