  This paper evaluates the energy performance of a new daylighting system,
patented by the author, in a regular closed office space. The advantage of this
new system as opposed to conventional venetian blinds is its rotating
capability, which improves the energy efficiency of the space. Computer
simulation method has been conducted to examine the performance of this new
system on the south aperture of a closed-office space with 30% Window to Wall
ratio (WWR) in three cities in Iran with different climate zones based on
ASHRAE: Tehran (3B), Tabriz (4B), and Yazd (2B). The simulation has been
implemented in Honeybee platform with EnergyPlus engine to simulate the
combined total load consisting of heating, cooling, and lighting loads. To
control lighting, a dimming control is applied to the space. The results of the
study represent the benefits of the reversible daylighting system (RDS) over
the state of the art venetian blinds to improve the energy efficiency of the
space through just changing the location of the blind during heating/cooling
demand time of the year.
