Academic literature on the topic 'Simulation and Lux-level'

Karawo embroidery processes are carried out without using machine technology. This research aims to optimize the lighting of the Gorontalo karawo fabric production house. The method used is by surveying, conducting direct measurements, and distributing questionnaires. A simulation is carried out using Dialux Evo 9.0 in existing conditions and after the addition of lights. Simulation measurement shows an average lighting value of 461.3 lux from 07.00 to 17.00. The result does not meet the SNI 16-7062-2004 for fine work, which is a minimum of 1000-2000 lux. Based on the measurements on the field, it was found that the lighting level only ranged from 22.19 lux to 30.78 lux. According to the karawo craftsmen, 33% had headaches and eye pain during the production process, and 33% had eye pain. Moreover, based on the simulation with the light on, the average intensity is 1107.4 lux and reached the specified standard.

The effects of illuminance level and lamp type were investigated for crime prevention in Thai pedestrian walkways aimed to examine the effects of illuminance on perceived safety, pedestrian behaviour, and criminal identification as part of crime prevention. Laboratory tests were carried out at the Faculty of Architecture, Kasetsart University. Five levels of illuminance: 10, 20, 50, 100, and 200 lux, and the types of lamps—HPS, LED Daylight and LED Warm White were investigated. Experimental tests were performed using a 3D model with DIALux simulation. Results showed that each lamp type required a different illuminance to optimize crime prevention. The HPS lamp with an illuminance of 200 lux was found to be the most suitable level for perceived safety, while 10 lux was suitable for pedestrian behaviour and 10 lux was suitable for criminal identification. For the LED Daylight lamp, the illuminance of 200 lux was the most appropriate level for perceived safety, while 20 lux was suitable for pedestrian behaviour and 10-20 lux was enough for criminal identification. For the LED Warm-white lamp, the illuminance of 10 lux was the most appropriate level for perceived safety, with 20 lux for pedestrian behaviour, and 10-20 lux for criminal identification.

Lighting is one of the essential aspects of architectural design because it is crucial for room ambiance. Artificial and natural lighting affect the architectural element and the furniture. Using simulation tools is beneficial for measuring the reflective level of furniture elements to the room's lighting. DIALux Evo3 is computer software to support artificial and natural lighting simulation for interior spaces up to a particular room standard. This study uses the DIALux Evo3 software to conduct the trial-anderror process. The level of reflection on an interior element affects the lux value. This study will focus on the aspects of the ceiling, chairs, and table furniture using the trial and error method by simulating until a difference looms. The focus simulation focuses on setting the reflective coating in the DIALux Evo3 software on ceiling elements, chairs, and tables. The literature method examines aspects of DIALux Evo3 and the points measured in the simulation process. This simulation uses 15 lamps. This study aims to prove that the choice of paint finishing affects the results produced by the vertical illuminance (adaptive) parameter and utilizes technology in architecture. The conclusion is that interior elements such as ceilings, chairs, and tables with reflective elements affect the artificial light. The aspect with low reflectivity requires a high lux value compared to architectural and interior components with high reflectance

Several issues with public street lighting are often found and do not meet the Indonesian National Standard (SNI). Common problems include uneven spacing between streetlight poles, improper pole heights, poorly organized streetlight installations, and incorrect selection of lamp types and wattages according to the SNI standards. The lack of streetlights on busy road sections results in inefficient operation and discomfort for road users due to inadequate light intensity at the streetlight locations caused by various factors. To address these issues, solutions are needed to improve the existing situation, including energy-saving measures for public street lighting. Some necessary actions include replacing non-compliant streetlights and conducting evaluations by relevant authorities after installation works are completed. The existing condition of streetlights along the Semayang Toll Road shows an average illumination level produced by 150W SON-T lamps of 3.1 lux with light uniformity of 0.0, which does not comply with SNI 7391:2008. Simulation results using Dialux 4.13 software indicate that the average illumination level produced by Philips LED luminaires of 150W is 11 lux with a light uniformity of 0.106 lux, meeting SNI 7391:2008 requirements. Similarly, for Philips LED luminaires of 120W, the average illumination level is 11 lux with a light uniformity of 0.114 lux, thus meeting the standards. Based on the simulation results using Dialux 4.13 software, the use of 120W LED lamps for public street lighting on the Semayang Toll Road can lead to a 20% reduction in electricity consumption.

Purpose Considering that time spent outdoors is protective for myopia, we investigated how ambient light levels reaching the eye varies across 9 outdoor and 4 indoor locations in 5 different environmental conditions. Methods Illuminance (lux) was recorded using a lux meter under conditions of weather (sunny/cloudy), time of a day (7:00,10:00,13:00, and 16:00 hours), seasons (summer/winter), and sun protection (hat and cap) in outdoor and indoor locations. Nine outdoor locations were “open playground”, “under a translucent artificial-shade”, “under a porch facing east”, “under a porch facing south”, “under a big tree”, “between three buildings”, “within 4 buildings”, and “canopy”. As a ninth outdoor location, “Under a glass bowl” in the outdoor location was used as a simulation for “glass classroom model” and measurement was taken at the floor level only to determine in overall the illuminance conditions with glass covered on all sides. The 4 indoor locations included “room with multiple large windows”, “room with combination light source”, “room with multiple artificial lights”, and “room with single artificial light”. Results The overall median illuminance level (median; Q1-Q3) recorded in 9 outdoor locations was 8 times higher than that of all indoor locations (1175;197–5400 lux vs. 179;50–333 lux). Highest illuminance in outdoor locations was recorded in “open playground” (9300;4100–16825 lux), followed by “under a translucent artificial shade (8180;4200–13300 lux) and the lowest in “within 4 buildings” (11;6–20 lux). Illuminance under ‘Canopy’, ‘between three buildings’ and ‘within four buildings’ was similar to that of indoor locations (<1000 lux). Time of the day, weather, season, sensor position and using sun protection did not alter illuminance to change from high to low level (>1000 to <1000 lux). Among indoor locations, illuminance in “room with multiple large windows” crossed 1000 lux at a specific time points on both sunny and cloudy days. Conclusions Illuminance levels in outdoors and indoors varied with location type, but not with other conditions. Given the variation in illuminance in different locations, and the impact it may have on myopia control, appropriate detailed recommendations seems necessary while suggesting time outdoors as an anti-myopia strategy to ensure desired outcomes.

Daylighting is essential for enhancing the lighting ambiance and ensuring occupants' visual comfort in a café. Nowadays, a café is not only a leisure destination, but also becomes a preferred place for people working remotely. Consequently, the necessity for proper daylighting in a café becomes crucial to achieve customers' visual comfort. Regarding daylighting, windows play a pivotal role in bringing natural light into a building. Thus, the Window-to-Wall Ratio (WWR) percentage has a significant impact on the illuminance level within the building. To prevent visual discomfort, the Leadership in Energy and Environmental Design (LEED) v4.1 Standard for daylight measurement will serve as the parameter to achieve an acceptable level of illuminance, ranging between 300 lux and 3,000 lux at both 9 AM and 3 PM. The objective of this research is to determine the optimal WWR percentage in a case study café to achieve an acceptable illuminance level based on the LEED v4.1 standard, using Velux as the simulation software. The research methodology involves measuring the existing illuminance level of the case study café using a lux meter to validate the building simulation results. Subsequently, the 3D model of the café will be simulated in Velux with varying Window-to-Wall Ratios (WWR) to identify the optimal WWR that aligns with the LEED v4.1 standard for daylight measurement.

Abstract: Natural lighting comes from the sun, while the artificial lighting comes from artificial light (lamp). Lighting is needed to do the activities in a room, whether it is natural or artificial lighting. The amount of natural lighting depends on the location and the dimension of windows as well as the direction of the trajectory of the sun. Window, which has a larger opening, will allow much sun light. Artificial lighting depends on the types of lamp and the power of light transmission (watts). If the power of light transmission is greater, the light will be brighter. Certain activities will need different illumination level. The standard of illumination level for the studio of drawing is 750 lux because the activities require high precision. In the initial study to determine whether the lighting conditions in the studio has already met the requirement of illumination level, luxmeter is used to measure the illumination level for three days. The result of the measurement indicates that the natural lighting, which is available today, has not reached 750 lux. This study uses Ecotect Radiance Simulation Program to improve natural and artificial lighting in the studio of drawing. To achieve the actual results of the simulation of artificial lighting, the simulation uses Erco lights series LED White 72689.000 Opton which is placed 2.5 meters from the floor. The simulation shows that the average value of random samples is 1749, 7 lux. Simulation of the natural lighting uses the climate of Palembang city. Therefore, it is advisable to replace the existing artificial lighting with the lights.Keywords: natural lighting, artificial lighting, architectural drawing studioAbstrak: Pencahayaan alami adalah pencahayaan yang bersumber dari sinar matahari, sedangkan sumber pencahayaan buatan berasal dari sinar buatan (lampu). Sebuah ruang dengan segala aktivitas didalamnya membutuhkan pencahayaan, baik itu alami maupun buatan. Pencahayaan alami yang masuk ke dalam ruangan dipengaruhi oleh letak dan ukuran jendela, serta arah lintasan matahari. Semakin besar bukaan pada jendela, maka cahaya yang masuk akan semakin besar pula. Pencahayaan buatan yang maksimal dipengaruhi oleh jenis lampu dan kekuatan daya pancar (watt). Semakin besar daya yang digunakan, maka lampu tersebut akan semakin terang. Fungsi ruang yang berbeda akan membutuhkan tingkat iluminasi yang berbeda. Tingkat iluminasi standar untuk ruang studio gambar adalah 750 lux karena termasuk aktivitas yang membutuhkan ketelitian tinggi. Pada penelitian awal, yang dilakukan untuk mengetahui apakah kondisi pencahayaan pada ruang studio gambar telah memenuhi standar, dilakukan pengukuran dengan menggunakan luxmeter selama tiga hari. Hasil dari pengukuran tersebut menunjukkan bahwa pencahayaan alami yang ada saat ini belum mencapai 750 lux. Pada penelitian ini dilakukan simulasi dengan program Ecotect Radiance untuk memperbaiki pencahayaan alami dan buatan pada ruang studio gambar. Untuk mendekati hasil sebenarnya dalam simulasi pencahayaan buatan, digunakan lampu Erco seri Opton LED White 72689.000 yang diletakkan setinggi 2,5 meter dari lantai. Dari simulasi ini, diperoleh nilai rata-rata dari sampel acak sebesar 1749,7 lux. Simulasi pencahayaan alami menggunakan iklim kota Palembang. Oleh karena itu, disarankan untuk mengganti pencahayaan buatan yang ada saat ini dengan lampu tersebut.Kata kunci: pencahayaan alami, pencahayaan buatan, studio gambar

Most buildings have spaces far from the windows that require artificial lighting for illumination throughout the day. In fact, artificial lighting contributes to the second highest electrical energy consumption, especially in educational institutions that require more lighting. One of the appropriate solutions to illuminate areas far from windows is using a fiber optic daylighting system. FOD is used to distribute sunlight into the spaces away from the window. This research tested the lighting levels produced by alternative collector and diffuser models of FOD systems to meet the lighting level standards (lux) in discussion room P. 06. 05. Petra Christian University. This research uses experimental methods under actual weather exposure and simulation with DIALux software. Simulation results show that the room requires 6 collectors and 2 diffusers, arranged centrally and symmetrically. It produces 365 lux and a uniformity ratio of 0.59, which meets the standard. The lighting level data used was at 10:30 AM during partially cloudy conditions.

Insufficient and uneven light distribution in the workplace affect the quality of work that requires high precision. In addition, inadequate lighting not only affects the health of workers but is also linked with a condition called 'Sick Building Syndrome'. The artificial light in factories is commonly manually controlled, resulting in energy wastage. Hence this paper presents a smart lighting and shading system to create both comfort lighting and energy-efficient factory environment. Three-dimensional modelling simulations were built using Tinkercad and Revit. The control system built utilizes the motorized skylight solar shades and the artificial high LED Bay, which able to adapt with the fluctuating factory lighting condition. If the light enters the factory through the motorized shade on the factory ceiling is insufficient or uneven, the artificial light will be switched on. The implementation of both mechanisms managed to improve the light distribution evenness and keep the light intensity level in the factory in the range between 885 lux and 1306 Lux from 9am to 6pm, while from 6pm onwards at average of about 900 lux. Furthermore, the electrical energy consumption is reduced significantly during the daytime as the control system has utilized the sunlight as part of the light source for the factory. The smart system can save as much as 22.39%, or 55.2128kWh from 9am to 7pm. In conclusion, the smart lighting and shading control system has proven the effectiveness theoretically, and the objectives were achieved.

The room requires specific lighting according to its function. One way to achieve the room's optimal comfort is to adjust the natural or artificial lighting to the required standards. This research aims to study daylight intensity in the architectural classroom studio on the sixth floor of Building C Universitas Trisakti and compare it with the illuminance level requirements stipulated in SNI 6197: 2011. This study hypothesizes that the natural intensity of the room, which also functions as an architectural drawing studio, is incompatible with conventional lectures. The measuring instrument was the Lutron LM 8000A Light Lux Meter, while the natural lighting contour simulation used Dialux Evo 9. The results show that the measured natural lighting intensity is unevenly distributed. There are bright zones in the room that exceed the standard value of the illuminance level (> 350-750 lux) and dark zones that are below the standard of illuminance (<350-750 lux), with a distance of 0.5 m - 3m from a row of window openings as a source of lighting.