Immersive virtual reality as a tool for lighting design: applications and opportunities

Immersive virtual reality offers a wide range of applications. Immersive virtual reality in particular can play an important role in lighting design, thanks to its ability to allow a quick assessment between different design choices based on spaces, colours and light. However, immersive virtual reality has to guarantee a correct reproduction of light behaviour from photometric and visual points of view, in order to be effectively used for lighting analysis. This paper presents a literature review aimed to analyse the activities of the research groups operating in this field that have addressed, with different approaches and points of view, the issue of iVR applications in the reproduction of environments illuminated by either daylight or electric lighting, as well as a combination of them.

Visual performance of home offices: a case study

The design of the lighting systems in conventional office environments is typically supported by domain specialists. However, the same is not true of home offices, whose arrangements frequently result from ad hoc and do-it-yourself activities. This circumstance may have ramifications for occupants’ health, comfort, and productivity, given the recent significant increase in home officing prevalence. In this context, the present contribution reports on a detailed case study of lighting conditions in a number of home office settings. Thereby, nine home offices (located in the city of Izmir, Turkey) were investigated. The home offices serve a variety of professionals. The study involved measurements under daylight and electrical light conditions. Moreover, simulations were conducted to explore improvement opportunities. The investigation results point to a highly uneven level of performance across the selected cases. The visual conditions were found to be generally better under daylighting conditions, despite some instances of excessive illuminance. Electrical lighting analysis results reveal in many cases insufficient light levels due, in part, to unsuitable types and positions of the luminaires. Simulation-based optimization exercises suggest that the visual conditions in the studied home offices can be considerably improved via changes in the number and types of the luminaires.

The Artificial Lighting Analysis of Study Rooms in Dormitories and Classrooms Islamic Boarding School Of Lil Banat Parepare

This study aims to find out the intensity of light in the study room of Islamic boarding school of DDI Lil Banat Parepare. Measurements are taken in rooms that are often used by students to learn, namely classes and dormitories. The type of research used is quantitative by simulation method. Variables are tied to exposure measurement i.e. light intensity. While the variables are free, namely the arrangement of light points and the layout of the study room. Measurements were carried out over three days using a digital lux meter tool. The measurement results showed that the intensity of light in the dormitory did not meet the Indonesian National Standard for study space both night and day. During the day classrooms meet Indonesian National Standards but not at night. Although students as a space user is comfortable with the condition of light intensity in the study room and can learn according to these conditions, students still feel some complaints in the form of sore eyes, tense eyes and difficulty focusing. Thus, researchers made recommendations on the design of study rooms that can make students more comfortable learning in dormitories and classrooms so as to reduce complaints while studying. Lighting design recommendations are made in several alternatives by adding the number of lamps and changing the type of lamp using Dialux simulation. The simulation results of the study room lighting design recommendations have met the standards for use so that it can be applied to dormitories and classes at the Islamic boarding school of DDI Lil Banat Parepare. Keywords: Artificial lighting design; study room; light intensity

Analisis Pencahayaan Ruangan Pada Ruang Kelas Di Universitas Singaperbangsa Karawang Menggunakan Dialux Evo 9.1

Room lighting is an important factor in the work environment to improve performance and is also a factor in occupational health and safety. Lighting that is not up to standard can cause eye fatigue, resulting in decreased worker performance. In educational institutions, the classroom is the room that is used most often compared to other rooms, so that the classroom needs adequate lighting to support the occurrence of teaching and learning activities in the room. In two classrooms at University of Singapperbangsa Karawang, indoor lighting analysis was carried out to determine the level of lighting. The purpose of this study is to determine whether the lighting level in the classroom is in accordance with the SNI 03-6575-2001 standard, which is 250 Lux. Based on the calculation of the number of lights, in class 1 it takes 8 lights and in class 2 it takes 14 lights. Calculations using Dialux Evo 9.1 in class 1 the lighting level during the day are 280 lux and at night is 187 Lux, while in class 2 the lighting level is 189 Lux during the day and 199 Lux at night. This shows that it is necessary to repair the lighting installation.

Sustainable Low Carbon Urban Lighting Analysis: Case Study of Bandung City

Nowadays, lighting technology is in the transition period from conventional lighting to LED, which more environmentally friendly due to free of harmful substances such as mercury, lead, or other hazardous chemicals and gases. This low light pollution because directional light is carefully distributed precisely to the intended location. Performance of the lights also brighter than other lights. This research measuring the reduction of CO2 gas emissions before and after PJU (street lights) in Bandung is changed from the conventional to the LED, also mapping the CO2 gas emissions in six Development Areas (SWK). The basis for this research approach is a case study with before and after comparison, meaning that this approach only applies to one object that is the same as comparing the condition of the object before and after the treatment. In this study, the evaluation research method used is a causal method, which is a method that is more directed at impact evaluation research. Scientifically and objectively, PJU LED provides low CO2 emissions gas by up to 26 % in Bandung city. Keywords: CO2 emission, the light emitted diode (LED), street lights.

A new approach for extending the possibilities of collaboration between BIM, GIS and Web environments to increase the efficiency of building space management

The paper presents the approach that extends the opportunities of Web environments in BIM model processing and allows implementation of the bigger amount of analysis that is based on the object’s positioning. With the developed relations, the objects in the BIM model can be considered not just like independent 3D objects in the WebGL environment but as objects that are linked between each other and can act by the rules that defined to each type of the objects. Correlated co-ordinates will be useful for the architects, building operators and facility managers who use the BIM model for the management of the building and its components. This method can be used to increase the effectiveness of space management, clash detection, relocation management and space programming as well as existing conditions modelling and lighting analysis can be done in a way that is more efficient due to possibility of implementation of the survey coordinate system that will give the coordinates to each object in the scene.