A good work environment in school is crucial in order to effectively teach and learn. Two factors that have a strong impact on the environment in a classroom is the lighting and the sound level. Research has shown that both light and sound have an impact on the health, and while a lot of research has been done on the work environment and the impact by different factors, very few studies have focused on how light and sound affect each other. The purpose of this study is to shed light on how the lighting can affect the sound level in a classroom. The results of this study could be used as a reference as to how the lighting should be set up in order to creative the most effective work environment in a classroom. In order to study if the sound level changes depending on the lighting, a quantitative field experiment has been performed. The study took place in a classroom with 6th graders in primary school. During 12 weekdays over a period of 3 weeks, the decibel values were logged to find out whether the sound level changed. During the first week, the original lighting was used. During the second week, the light was dimmed, and during the third and final week, the light was unevenly spread out. The results show that the sound level is indeed affected by the lighting in the classroom. The unevenly spread out lighting setup with a focus on vertical surfaces resulted in the lowest sound level. One conclusion that can be drawn is that more focus on the ambient light affects the students positively. The most important conclusion is that a lighting setup with different luminaires and a variety of the light levels and spread depending of the time of the day and season, is affecting the sound level and work environment in the classroom in a positive way. / En bra arbetsmiljö i skolan är en viktig förutsättning för att kunna förmedla kunskap. Två parametrar som har stor betydelse i ett klassrum är belysningen och ljudnivån. Forskning visar att både ljus och ljud påverkar hälsan men trots mängden forskning gällande arbetsmiljön och dess påverkande parametrar finns det fåtal forskningar som studerar hur ljus och ljud påverkar varandra. Syftet med studien och denna rapport är att öka kunskapen om hur ljussättning kan påverka ljudnivån i ett klassrum i grundskolan. Studien kan användas som underlag för hur klassrum bör belysas för att påverka arbetsmiljön i ett klassrum. För att undersöka om ljudnivå förändras vid förändrad ljusnivå respektive förändrad ljusfördelning har ett kvantitativt fältexperiment utförts. Studien genomfördes i ett hemklassrum för årskurs 6 och under tolv veckodagar under tre veckors tid loggades decibelvärden. Under vecka 1 var klassrummets ursprungliga belysning kvar, under vecka 2 sänktes ljusnivån och sista veckan skapades en ojämn ljusfördelning. Resultaten visar att ljudnivån kan ändras i ett klassrum med hjälp av belysningen, och studien resulterade i att den ojämna belysningen med fokus på vertikala ytor och omfältsljuset gav den lägsta ljudnivån. Slutsatser som kan dras av resultaten är bland annat att mer fokus på omgivningsljuset påverkar elevernas välmående i en positiv riktning. Den viktigaste slutsatsen är ändå att en belysningslösning med tillgång till olika typer av armaturer och möjlighet att kunna variera både ljusnivå och ljusfördelning beroende på lektion och tid på dygnet och årstid bidrar till en bättre arbetsmiljö i klassrummet.

Submitted by William Justo Figueiro (williamjf) on 2015-06-25T22:57:04Z No. of bitstreams: 1 37.pdf: 3114902 bytes, checksum: 4bb3e86045ed3d7de9871884757e4501 (MD5) / Made available in DSpace on 2015-06-25T22:57:04Z (GMT). No. of bitstreams: 1 37.pdf: 3114902 bytes, checksum: 4bb3e86045ed3d7de9871884757e4501 (MD5) Previous issue date: 2014 / Nenhuma / Contemporaneamente, com as cidades se tornando cada vez mais verticais, é difícil projetar espaços urbanos em que a iluminação e o calor do sol consigam atingir o solo e os andares inferiores dos prédios urbanos de maneira a não prejudicar a saúde da população. Diante das limitações físicas para a análise do grau de iluminação natural de um grande conjunto de prédios torna-se necessária a simulação através de modelos computacionais. Parâmetros como a localização geográfica, altura, número e distância entre os prédios são usados para a identificação dos níveis de radiação solar e os consequentes desafios ambientais e tecnológicos a serem superados visando a sustentabilidade. O objetivo deste trabalho é analisar o grau de iluminação natural externa em áreas urbanas para que se possa buscar uma solução técnica a fim de propiciar ao homem as condições prediais adequadas de iluminação e temperatura. Para tanto, é apresentado um modelo de iluminação de prédios que contempla simulações que permitem tanto a análise do grau de iluminação por prédio quanto a análise do grau de iluminação global em um grande conjunto de prédios em função do parâmetro através da técnica de PCA. / Contemporaneously, cities are becoming more vertical, it is difficult to design urban spaces in which light and heat from the sun would attain the ground and lower floors of urban buildings in a way that does not harm the health of the population. Given the physical limitations to the analysis of the degree of natural lighting of a large number of buildings, it is necessary to simulate it by computer modeling. Parameters such as geographical location, height, number and distance between buildings are used to identify levels of solar radiation and the resulting environmental and technological challenges to be overcome for the sustainability. The objective of this work is to analyze the degree of outside natural lighting in urban areas to seek a technical solution in order to provide the suitable human conditions of lighting and temperature. For this, a model lighting of buildings that includes simulations that allow both the analysis of the degree of illumination building as the analysis of the degree of global illumination on a large set of buildings is presented. The result is presented using the technique of PCA.