Analysis of light tubes in interior daylighting system for building

Abstract

Analysis of vertical light tubes, and diffuser as daylighting system in buildings is presented. The solar light energy is directly addressed to the chosen area of the building with a light tube and diffuser guiding structure. This work highlights illuminance obtained by light tubes in a three storied office building. Field investigation with a scaled prototype and simulations with HOLIGILM, and DIALux are analyzed. It is observed that light tubes can offer large savings in electricity usage by using natural daylight.

Daylighting Application Suitable for Architectural Design With Light Tube in Warehouses

“…With its multiple reflection mechanism, the light tubes transmit the sunlight more homogeneously. Daylight has several advantages in terms of human health and comfort (Hopkinson and Petherbridge, 1966, Plympton, et al 2000, Kim and Kim, 2010, Mohapatra et al 2020. Daylight systems can reduce heating and cooling costs in buildings (Lapsa et al 2007, Darula et al 2013, Kocifaj et al 2008, Mohapatra et al 2020.…”

“…Daylight has several advantages in terms of human health and comfort (Hopkinson and Petherbridge, 1966, Plympton, et al 2000, Kim and Kim, 2010, Mohapatra et al 2020. Daylight systems can reduce heating and cooling costs in buildings (Lapsa et al 2007, Darula et al 2013, Kocifaj et al 2008, Mohapatra et al 2020. With the use of light tubes, daylight creates a positive effect in areas that receive much less light than windows (Whitehead, 1998, Kocifaj et al, 2008, Carter, 2002.…”

“…Using daylight or natural light can reduce energy consumption by up to 30%. The light tube saves energy (Dutton and Shao, 2007, Shao et al 1998, Oakley et al 2000, Mohapatra et al 2020). In addition, the use of light tubes provides benefits to human health in terms of circadian rhythm and physiological effects (Kennedy and ORourke, 2015, Hanneborg, 1901, Mohapatra et al 2020.…”

“…The light tube saves energy (Dutton and Shao, 2007, Shao et al 1998, Oakley et al 2000, Mohapatra et al 2020). In addition, the use of light tubes provides benefits to human health in terms of circadian rhythm and physiological effects (Kennedy and ORourke, 2015, Hanneborg, 1901, Mohapatra et al 2020. It was first discovered by Hanneborg of Norway in 1900 that a light tube brings light to the central area inside large structures (Hanneborg, 1901, Smart, 1983.…”

“…It was first discovered by Hanneborg of Norway in 1900 that a light tube brings light to the central area inside large structures (Hanneborg, 1901, Smart, 1983. Fiber optic lighting as a new technology that will create a light tube effect today also has very good transmission properties, but Fiber optic lighting is very expensive compared to light tubes (Smart, 1983, Mohapatra et al 2020. Nowadays, the light tube has become popular in the development of daylight technology.…”