• Title/Summary/Keyword: RELUX

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Recycling of EAF Dust by Semi-continuous High Kinetic Process

  • Zoz, H.;Kaupp, G.;Ren, H.;Goepel, K.;Naimi-Jamal, M. R.
    • Proceedings of the Korean Powder Metallurgy Institute Conference
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    • 2006.09a
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    • pp.491-492
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    • 2006
  • The horizontal high energy rotor ball mill ($Simoloyer^{(R)}$) is used to break and activate dry solids. It is used for dry-milling and in the vertical mount for wet-milling in leaching processes. Technical electric arc furnace (EAF) dust with high contents of zinc oxide, zinc ferrite and magnetite is efficiently separated by ambient temperature leaching. The process shows promise for industrial application

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A Study on the Lighting Distribution Optimal Design of 250 W LED Streetlight (250 W급 LED가로등의 배광 최적설계에 관한 연구)

  • Shin, Wang-Soo;Lee, Seung-Min;Gwon, Young-Guk;Lee, Jin-Youle;Park, Dae-Hee
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.28 no.6
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    • pp.408-413
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    • 2015
  • Road lighting has emerged in importance as an essential system to secure safety and visibility for drivers and pedestrians. According to the Road Lighting Standards (KS A 3701), the luminance uniformity (U0) should be 0.4, the luminance uniformity for lanes (UI) should be 0.5, and a threshold increment (TI) of 10% should be satisfied. In this study, we conducted simulations using the Relux program in which the secondary optical lens was applied to a 21 W engine. Ten LED engines were installed on a two-way four-lane road, and the simulation result satisfied the requirements with U0 0.47, UI 0.63 and TI 8%. The U0, UI, and TI were compared with the angle of the LED streetlight varied in the range of $9^{\circ}{\sim}15^{\circ}$ with $0.5^{\circ}$ intervals. The range was selected as ${\pm}25%$ of the standard inclination angle of $12^{\circ}$ according to the Road Lighting Standard. The U0 was high and the UI and TI were low when the tilting angle was in the range of $9.5^{\circ}{\sim}10.5^{\circ}$. Consequently, an optimum-design of lighting distribution was obtained for the concrete two-way four-lane road when the inclination angle was $9^{\circ}$.

The Study of domestic application for the Guideline of Model Outdoor Lighting Ordinance (MLO 옥외조명 설치지침의 국내 적용성 연구)

  • Jung, Jong-Hwan;Lee, Kyumok;Gu, Jinhoi
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.11
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    • pp.20-29
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    • 2012
  • The outdoor lighting is provided for a variety of purposes, for work or recreation, for safety or security, for amenity and for advertising or display. But the effects of lighting on the natural environment can be difficult to quantify. At present, in many countries, various policies to manage the light trespass from outdoor light have been planned. For example, Model Lighting Ordinance(MLO) will allow communities to drastically reduce light pollution and glare and lower excessive light levels. The recommended practices of the IES can be met using readily available, reasonably priced lighting equipment. So, it this paper, we analyze the effect of road lighting on light trespass using by RELUX program. And then we consider the possibility of practical application of BUG rating in Korea.

A Study on the Comparison of the PV Module Generation from Daylight Irradiation and Indoor Lighting Savings with Lighting Simulation (일사량 분석을 통한 PV모듈 발전량과 시뮬레이션을 이용한 실내 조명에너지 절감량 비교)

  • Park, Yoon-Min;Hong, Seong-Kwan;Choi, An-Seop
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.17-24
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    • 2010
  • Recently, BIPV system which is good enough for maintenance and functions with the shading system is being used. However BIPV system with the shading system is different from existing PV module because of using flexible PV module. Prior to the application of the BIPV system, the clearness index was calculated by Erbs et al.(1982) and analyzed for the amount of electric power generation of sky irradiance with measured data. To predict electric lighting energy savings in daylit space, electric lighting power savings with amount of PV module electric power generation was compared by using Relux 2010 software in this study.

Optimize Optical Design of 180W class LED Street Lighting Modules (180W급 LED가로등 최적 배광각 설계)

  • Kim, Kyoung-Onn;Eo, Ik-Soo;Suh, Eui-Suk;Song, Sang-Bin;Kim, Gi-Hoon;Park, Joung-Wook
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.1615_1616
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    • 2009
  • LED 조명기구의 광학적, 기구적 설계의 최적화 방안이 여러 가지로 논의 되고 있는 가운데, 본 연구에서는 LED 조명기구 중에서도 점차 활용에 대한 시도가 증가하고 있는 LED 가로등의 적절한 배광을 달성하기 위한 광학 설계를 하였다. 그리고 Lens와 Reflector의 결합이 아닌 Reflector만을 이용한 배광 제어 설계 방법을 제시 하였다. LED 가로등 모듈의 설계는 Photopia를 사용하였고, 도로 적용 시뮬레이션은 Relux를 이용하여 설계결과에 대한 성능을 검증하였다.

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Analysis of the Change of Intensity Distribution and Luminous Environment by Reflector Shape in Indirect Reflected LED Luminaires (간접 반사형 LED 조명기구의 반사판 형태에 따른 배광형태 및 조명환경 변화 분석)

  • Kim, Yu-Sin;Choi, An-Seop
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.25 no.1
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    • pp.9-17
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    • 2011
  • Development of high efficiency and eco-friendly LED source has been progressed continuously. Also, by nation's regulations, public institutions have changed existing luminaires to LED luminaires. However, there are several differences between existing luminaires and the intensity distribution of general planar LED luminaires. In case of changing existing luminaires to LED luminaires, by such differences, there are inefficiencies both quality aspect and energy aspect in luminous environment. Therefore, this study aims to conduct a study on the changes of intensity distribution and luminous environment by reflector shapes in indirect reflected LED luminaires with software for optical design of a luminaire (Photopia 2.0) and lighting design of a space (ReluxPro). This study shows the changes of intensity distribution and luminous environment of indirect reflected LED luminaires and indirect fluorescent lamp luminaires by reflector shapes.

Analysis of Energy Saving according to Control Method of Lighting Control System using Daylight (자연광을 이용한 조명제어시스템의 제어방법에 따른 에너지 절감률 분석)

  • Moon, Seung-Mi;Kwon, Sook-Youn;Im, Kyoung-Mi;Lim, Jae-Hyun
    • Proceedings of the Korean Information Science Society Conference
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    • 2012.06d
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    • pp.462-464
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    • 2012
  • 최근 건물 내 에너지 소비량의 30%를 점유하고 있는 조명 에너지 절감을 위해 자연광을 이용하여 인공조명의 의존도를 낮추고 에너지 사용을 최소화하기 위한 다양한 연구가 진행되고 있다. 이에 본 논문에서는 조명 에너지 소비 절감 및 재실자의 작업 능률 향상을 위해 조명시뮬레이션 소프트웨어인 Relux를 이용하여 소규모 사무 공간을 3D로 모델링하고, 이를 기준으로 시간대별 자연광의 유입량에 따라 조명장치를 점멸제어, 조광제어, 스텝제어의 다양한 제어방법을 적용하여 반복적인 시뮬레이션 과정을 통해 각 제어방법에 따른 에너지 절감률을 비교 및 분석하였다. 분석 결과 조광제어가 60.5%로 가장 높은 에너지 절감률을 보였다.

Optimal Layout Simulation and Verification of LED Lighting for Improvement of Light Uniformity in Plant Factory (식물공장의 광 균일도 향상을 위한 LED 최적 배치 시뮬레이션 및 검증)

  • Lee, Hwa-Soo;Kwon, Sook-Youn;Lim, Jae-Hyun
    • Proceedings of the Korean Information Science Society Conference
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    • 2012.06d
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    • pp.381-383
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    • 2012
  • 식물재배용 인공광 최적 배치에 따른 균일한 조도 분포는 고품질의 식물 생산을 가능하게 한다. 그러나 기존에 상용화된 식물재배시스템의 경우, 인공광 배치에 따른 조도 분포 시뮬레이션 등의 전처리 과정이 생략된 채 제작되어 생산 품질의 편차를 초래하는 문제점을 가지고 있다. 이에 본 논문은 식물재배단의 광 균일도 향상을 위해 조명 설계 소프트웨어인 Relux를 이용하여 LED 조명장치의 높이, 간격 등의 배치를 달리함에 따라 변화하는 각 재배단의 조도 분포 및 균일도, 그리고 전체 에너지 소비량 등을 사전에 시뮬레이션 함으로써 대상 식물재배에 적합한 조명장치의 최적 위치를 파악하고자 한다. 또한, 포터블 조도측정기를 이용하여 재배단의 각 식물의 위치를 기준으로 실 측정한 결과 데이터와 비교 분석 과정을 거쳐 본 시뮬레이션 결과의 신뢰도를 입증하고자 한다.

Development of the Smart Lighting Control System for Plant Factory (식물공장용 스마트 조명제어 시스템 개발)

  • Lee, Won-Sub;Kim, Sung-Gaun
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.425-428
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    • 2011
  • 회전식 스마트 조명 시스템은 기존 식물공장에 무수히 많이 설치되는 LED와 형광등을 대신하여 비교적 적은 양으로 설치된 LED와 형광등을 회전시키는 시스템으로써 작물 재식판의 작물들에게 필요한 광을 회전하며 공급하는 방법이다. 이로 인하여 식물공장에 조명 시스템을 설치할 때 방생되는 고가의 초기 설치비용을 해결하고자 하는 시스템이다. 본 논문에서는 식물이 생장하는데 필요한 광량과 광속, 광양자속 밀도를 계산하고 블레이드에 설치되는 LED의 개수를 설정하였으며, 조명 시뮬레이션 프로그램 Relux를 이용하여 조명 장치가 회전함에 따라 조명장치의 중심과 바깥쪽에 생기는 광량의 차이를 확인 하였다.

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A Study on Optical Losses for Tubular LED Lamp's Components (직관형 LED램프의 구성부품별 광손실에 관한 연구)

  • Jeong, Hee-Suk;Park, Chang-Kyu
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.25 no.7
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    • pp.1-8
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    • 2011
  • The high efficiency tubular LED lamp has been developed. But, it occurs optical losses in consists of LED package, module, diffuser etc.. By Measuring the tubular LED lamp's luminous flux, we compared and analyzed about the effect of optical losses for each component and actually using measured luminous intensity distribution data, illuminance distribution was simulated by Relux. Optical losses are 24[%] from LED package to luminaire and the tubular LED lamp can be replaced with fluorescent lamp. In this paper, we could provide data for optimum lighting design by analyzing the optical characteristics for developing and propagating the tubular LED lamp.