#Relux light simulation windows

Daylight redirection is achieved through the prismatic louver geometry and proper orientation, whereas thermal energy harvesting is achieved through IR absorption from the liquid (e.g., water) within the prisms.

The LFPL system was installed in a south-facing room in New York City and evaluated for indoor daylight penetration and potential for thermal energy harvesting.

This paper, describes moreВ В» the design and experimental demonstration of a Liquid Filled Prismatic Louver (LFPL) system, which combines both energy-saving strategies. While there are many available faГ§ade-based technologies that can perform daylighting or solar thermal energy harvesting, there remains a limitation in available systems that can perform both of them simultaneously. Solar energy harvesting systems can mitigate energy costs from mechanical systems by managing incoming thermal loads or capturing solar energy that can be used to supplement thermal systems in the building. Effective daylighting implementation enhances the amount of useful natural light within a space and offsets the need for electric lighting. Two significant design strategies for mitigating building energy consumption are daylight redirection and solar energy harvesting.

#Relux light simulation windows

Life-cycle costs were lowest for the building configuration with the light-guide system and low-emissivity windows installed The payback period for the light-guide system was estimated at less than 10 years for Boston and Fort Worth, while close to 20 years would be required in Edmonton. High-thermal-resistance windows can reduce heating loads by more than 30% while decreasing the necessary boiler size. The lighting load reduction, coupled with the decrease in cooling loads, results in whole-building electrical consumption and peak demand reductions of up to 6% each, along with a corresponding decrease in chiller size. Results show that the annual electric lighting load for a 12.2 m (40ft) deep interior core area adjacent to south-facing perimeter offices (i.e., 39% of the interior core) can be reduced between 44% and 66%, depending on the city. Building configurations were simulated for Edmonton, Boston, and Fort Worth. The most energy-efficient south-facing offices have a lighting power density of less than 5W/mK]) windows on the perimeter-daylit offices. A recent study has shown that these offices' occupants are highly satisfied with their lighting environment.

All south-facing office rooms within the LESO solar experimental building in Lausanne (Switzerland) are equipped with a given type of ADS. Anidolic Daylighting Systems (ADS) are one type of very effective facade-integrated daylighting systems. Making daylight more available in office buildings can not only contribute to significant energy savings but also enhance the occupants' performance and wellbeing. Electric lighting is responsible for up to one third of an office building's electricity needs.