The purpose of this study is indused to visibility of visual task when a park of visual task covered with veiling reflection by the transparent materials. As a way, we induce the evaluating systems to the visual task by grasping the rolation between the physical factors and visibility.

쾌적한 환경을 제공하기 위한 조명은 보건 위생 및 작업 능률 등에 커다란 영향을 미친다. 그러나 적절하지 못한 조명은 전술한 내용을 약화시키며 에너지 낭비를 초래하게 된다. 그러므로 적절한 조도기준이 필요하다. 본 연구에서는 세계각국의 조도기준 자료를 수집 분석하고 우리나라 사람을 대상으로 한 실험결과를 적용하여 우리나라에 적합한 조도기준을 설정하였다. 본 연구의 결과는 조도설계 및 관리의 효율화 및 작업능률의 극대화를 이룰수 있으며, 조명 에너지 관리의 효율화를 통한 에너지 절감의 효과를 얻을 것이라 기대된다.

본 램프는 자체설계제작 기술에 의해 개발된 것으로서 국내 여건에 맞게 시동전압, 광속, 연색지수등에 중점을 두고 개발하였다. 시동특성, 밝기 연색지수 등 거의 모든 면에 있어서 선진제품과 동등수준, 그이상이다. 아직까지 수명시험이 완료되지않아 정확한 평가를 내릴수는 없으나 초기특성에 있어서는 선진제품보다 우수하다. 이번에 개발완료한 옥내용 메탈할라이드 램프는 점포조명, 전시장조명용으로 각광을 받고있으며 현재 전량 수입에 의존하고있다. 국내여건에 맞게 설계제작된 본 램프가 본격생산되는 94년 초가 되며는 수입을 억제 국내조명산업을 보호할수 있으리라 생각된다.

This study investigates the relationship between size, illumination ,and display of show window. The average width, heigh, and depth of show windows in Taegu area were 341.3, 233.4, and 125.8cm, respectively. As light source, halogen lamp was most frequently used, followed by fluorescent lamp and incandescence lamp. In the actual illumination, however, a combined use of more than 2 light sources was common. Further, a local illumination method, e.g., spot light, was generally adopted. The thought of employers and employees in fashion shops about display and illumination was examined aw well. On the whole, the necessity and importance of display were well recognized but the fact that the illumination should be hamonized with other factors such as color and arrangement of goods was underestimated.

현재의 오피스는 공간이 좁고, 바닥위의 배선이 장애물이며, 형광전구가 노출된 조명으로 실내 작업환경에 대한 고려가 매우 미약한 점에 의심할 여지가 없다고 생각된다. 특히 OA기기의 도입에 따른 집무 공간의 감소, 프린터 소음, 기기의 발생열, 배선, VDT(Visual Display Terminal:화면이 있는 OA기기) 작업과 관련된 환경 관리, 작업관리, 건강관리의 필요성등의 문제가 발생하고 있다. 그러므로 쾌적한 분위기를 구성요소로 조명은 실의 LAY OUT, 표면처리, 배색등 인테리어 디자인과 함께 그 효과를 최대한으로 연출하도록 되리라 생각된다. 따라서, 자연채광 이용을 통하여 절감될 수 있는 인공조명(형광등)의 제어방법으로서 본 논문에서는 점멸방식(ON,OFF)을 시도하였으며 점멸에 따른 급격한 조도저하를 보다 심리적인 차원을 고려한 실내조명 조광장치(천정형태와 외부에 댄 반사판)로 인한 실내조도 분포의 영향에 대하여 파악하고자 하였다.

형광등용 안정기의 실태를 파악하기 위하여, 제조시설 및 관리실태를 조사하고, 제품의 품질 특성을 조사하였다. 본 논문에서는 실태 평가를 위한 평가방법을 제시하고 이를 사용하였으며, 특히 형광등에서 가장 중요한 광출력 특성을 평가하기 위한 고아출력 평가인자를 제안하였다. 논문 자료를 위하여 8개사를 직접 방문하였으며, 제품 평가를 위하여는 입력 220[V] 형광램프 40[W] 1등용을 대상으로 하였다.

In this paper, it is proposed the the SCADA(Supervisory control and Data Acquisition) system in Apartment complex. The proposed SCADA system make use of the computer CRT(Cathod RAy Tube), which automatically observe the Electrical Facility, Elvator Facility, Fire Alarm Facility and process in the real-time data. In order to improve the hardware performance and the information process, the SCADA system composed of master-slave topology and decentralized the supervisory Facility. This system is expected the retrenchment of construction expenditure and the level-up of supervisory execution.

This paper shows the discharge characteristics of liquid nitrogen under plane to plane electrode, needle to plance electrode, inserting teflon insulator in plane to plane electrode at atmospheric pressure. The main experimental device of this paper is cryostat. The important results obtained from this study are sa follows. Breakdown voltage of LN2 under N-P electrode is higher than that of under P-P electrode at atmospheric pressure. Breakdown duration time is longer with increase of electode gap under the P-P, N-P electrodes. The formation of bubbles by evaporation is observed in spite of non-applying source at atmospheric pressure and the creation of corona confirmed. Breakdown voltage and breakdown duration time are in proportion to increase of diameter in case of inserting teflon insulator. Partial discharge characteristics of thickness 0.5[mm] is that 채굼 voltage of teflon insulator rose with increase of diameter in each [pps].

The Modeling analysis and design of a high frequency LC-type series and LLCC-type parallel resonant converter oprating in the continous conduction is presented. The state-plane diagram representation of the converter response gives and good insight into the converter operation. A set of characterisric frequency are plotted which design parameters can be obtained.

This paper persents the measurement method using a spinning cylinder system for stream-ing electrification of transformer oil. The spinning cylinder system has a simple mechan-ical construction, and requires less oil com-pared to the other methods. Alse, the effects of various admixtures on the static electri-fication and properties of tranformer oil can be easily investigated. Experiments showed that addition of the BTA reduced the streaming electrification and the polarity of static electrification wasconver-ted to negative at 50 ∼ 70[ppm] of BTA

The application of epxy composite materials for the outdoor insulating systems has some significant advan-tages compared with conventional inorganic materials, that is low weight in combination with high mechanical strength, small dimensions and design versatility. The paper describes the results of high voltage investigations carried out different aging types of epoxy resin insulator and silicone grease coating. The insulators have been exposed 3000 hours to weather-o-meter and 12 months to outdoor. In this connection, the main study of paper is form the basis of develop-ment of principal technologies of epoxy composites which ard: (1)manufacturing of insulator, (2)high vol-tage testing under dry and wet condition, (3)mechani-cal properties, (4)accelerated weather-ometer test and outdoor exposed, artificial polution.

This paper describes the modeling of winding vibration for a variation of load and temperature. The structural changes in transformer windings due to heat cause the change of vibration patterns. The vibration signals were detected by the accelerometer on the transformer windings. The real values were compared with estimated value using least-squares method, vibration model was cstablished and with this model, error compared with original signal was less than -50[db]. These results could be applied to diagnosis of incipient failures of the power transformers.

This paper presents the technical requirements and configuration of power demand control system in office building Generally, the peak power demand is occurred in cooling period. For power demand control in existing building, the most effective control points are the motors for air handling units.