Solving Air Conditioning Problems in a Design Project Using Energy-Efficient Daylighting Systems Based on Hollow Tubular Light Guides

Abstract

Abstract In our work we demonstrate a developed design project for lighting a 24-hour cafe at one of the largest airports in Russia. The project is based on use of energy-efficient technology for delivering natural light to rooms with constant presence of people. The existing option includes only minor artificial lighting. Employees and passengers who, for various reasons, have to stay in the terminal cafe for a long time, experience certain discomfort and fatigue for lack of natural light and continuous air conditioning in summer time. The proposed design project allows not only to radically change the interior atmosphere of the cafe due to natural sunlight and diffuse light, but also significantly save energy costs associated with continuous round-the-clock energy consuming artificial lighting and air conditioning in summer, contribute to improving the psychological comfort of people and preserving the natural environment. This statement is confirmed in this article below by the heat engineering calculation performed in Ansys calculation complex. There are no analogues to this project. Illumination calculations were performed in improved DIALux program, into which the relevant information on the applied daylighting systems was integrated. The calculation of the economic profitability of the design project confirms feasibility of material costs.