LJUSFÄRGMÄTTNADENS PÅVERKAN PÅ ENERGIEFFEKTIVITET OCH TRYGGHETSKÄNSLA

Sammanfattning: The high electricity prices are a talked about issue in today's society where many peoplefind themselves in a critical situation as a result of them. In a more long-termperspective, Sweden faces a goal of a comprehensive transformation of the energysystem. Lighting is a contributing factor to the energy system and energy use. Light inthe form of lighting is important for the visibility of objects and the surroundings, whichis a contributing factor to safety in society.The stock market price for electricity prices in December 2022 shows a sharp risethroughout Sweden and the forecast for today's electricity prices continues to rise(Konsumenternas, 2022). Energy consumption has a direct correlation to electricitycosts and dimmed LED light sources lead to lower energy consumption (Jägerbrand,2011). An important aspect in how the sense of safety, security and architecture isemphasized is the color rendering and light level of the lighting. A study carried out byMinchen et al (2020) proves that a light source with an increased color saturation and alower used illuminance can give rise to an equivalent visibility of a board as a lightsource with lower color saturation and higher illuminance.The aim is to identify and describe previous areas of knowledge about the colorsaturation and color reproduction of light sources. Tentative theory must be tested tosee if future outcomes can be predicted with the aim of lowering the light level andenergy consumption through increased color saturation and its impact on visibility andperceived safety.In order to achieve the aim and answer the study's questions, a literature search has beencarried out, in both primary and secondary sources, with keywords and search stringsin the scientific database Web of science together with the help of the snowball methodand snowball technique. In addition, available light source data from light sourcesuppliers has been analyzed to investigate the correlation between energy consumptionand color saturation. In order to further investigate the subject and answer the questions,an experiment was carried out with two different lighting scenarios of a modeled tunnel.During the experiment, participants contributed quantitative and qualitative data byanswering questionnaires for these scenarios.The study shows that light color saturation has an impact on the energy efficiency oflight sources and that different interpretations of how light color saturation and lightlevel affect the perceived visibility. The study indicates that a lower light level can beapplied without negatively affecting safety if other factors for the environment are takeninto account, where one of the contributing factors may be light color saturation.