• KIEAE Journal
• /
• v.6 no.1
• /
• pp.3-10
• /
• 2006

As has been expected, economic factors are a major consideration in almost every decision in building design process. Assuming that improving a lighting system, existing or proposed, will reduce operating cost, what preliminary economic guidelines can be established to determine whether any proposed investment appears cost effective? In such a case a reasonable technique to compare system costs is by life-cycle costing. Stated simply, a life-cycle cost represents the total cost of a system over its entire life cycle, that is, the sum of first cost and all future costs. This paper aims to exemplify the benefit of daylighting in term of economic consideration. Four different electric lighting system designs are proposed and a lighting control system that is continuously operating according to the level of daylight in the space has been adapted. The accumulated performance of electric and daylighting is figured out to declare the effective depth of daylight in the space. The analysis on the saving amount of lighting energy due to daylight has been undertaken in answer to the question, that is, several projects are being considered, which is the most desirable from the cost-effectiveness viewpoint. The result shows clearly that although denser layout of lighting fixtures might be more effective to interface to the level of daylight ceaselessly changeable, its economic benefit may not meet the expected criterion the reason of increased initial investment and maintenance cost for the fixtures and control hardware.

• Korean Institute of Interior Design Journal
• /
• v.22 no.1
• /
• pp.47-54
• /
• 2013

For the office work environmental design, the importance of the design management is increased to improve operation efficiency as well as the aesthetic environmental implementation of the function today. Lighting is a required element ineffective operation environment. It has become more important for the aesthetic, economic, and practical reasons, to consider the luminous environment and the lighting of visual tasks separately. When the brightness is insufficient, productivity deteriorates, and the layout of the lighting located by mistake causes the fatigue of eyes. Productivity rises to office in a large number of studies so as satisfaction is low in general in the dark office, and to be bright. Therefore the purpose of this research is to suggest the right direction of lighting design of office building area. 11newly renovated office buildings are selected for this luminous environment research. We could conclusions as following through this research. First, it was planned brighter than the recommended lighting level in the most space. It shows that the accurate lighting design criteria is needed in order to achieve proper lighting environment. Second, the application of the LED lighting fixtures is continuously increased in the recent office lighting environment. It is explained that it is applied for reasons of the electrical energy reduction and the maintenance efficiency with the long life time. Third, the consideration of the lighting plan for the difference of working types is not enough. with various communication configuration through an independent plan, and the effective lighting plan that appropriateness preparation design and energy saving area vailable must be applied. Fourth, the lighting environment of the lobby needs a specialized lighting plan as are presentative space of the building.

• KIEAE Journal
• /
• v.11 no.6
• /
• pp.127-132
• /
• 2011

Since the late 20th century, countries of the world have made every effort to solve environmental problems due to global warming. The Korean Government has also made various efforts on reducing energy and $CO_2$ emission under the motto of "Low-Carbon Green Growth". In order to achieve the goal to reduce energy in the construction field, severe design standards and regulations on saving energy in new buildings have been established. However, for maximizing the reduction of energy in buildings, it is time to focus on deteriorated buildings where applications of energy saving designs and techniques have been insufficient. Especially, there are little guidelines and researches on reducing energy through remodeling at deteriorated school buildings which were built over 20 years ago. This paper suggests the priority of factors to reduce energy on the remodeling process at deteriorated school buildings using the AHP(Analytic Hierarchy Process) method. For applying the AHP method, the survey of staffs in the Education Offices and board members in the Korea Institute of Ecological Architecture and Environment was conducted via e-mail. As a result, factors of insulation, daylighting, system control, and windows turned out important in the energy reducing remodeling process at deteriorated school buildings, while factors of artificial lighting, solar heating, ventilation, and system did relatively unimportant.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2001.11a
• /
• pp.31-34
• /
• 2001

Changing to a 24-hour urbanistic life style, a night time activities constituted for a major portion. Important of a beautiful exterior lighting as well as safety, and security concerns become increasingly. However, the removal or control of the excessive lighting is considered more important then increasing the brightness of the lamps to achieve bother safety and security. Representing a cheerful and leisure environment from the exterior lighting can also harmonize two aspects of energy saving and sustaining green environment. Designing of exterior lighting at the ＯＯ Agricultural & Fishery Circulation center symbolizes the suitability, convenience and production. It's design and analysis represent the optimum urban night time environment.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.15 no.3
• /
• pp.1-9
• /
• 2001

At the beginning of the lighting design, the improvement of lighting design method and standardization of the lighting design needed for saving lighting energy in the building design that can help to choose a high efficiency luminaire and it can calculate LLF(light loss factor). for that reason Average Illumination Calculation Software using ZCM for lighting designer was developed.

• Proceedings of the Korea Contents Association Conference
• /
• 2014.11a
• /
• pp.255-256
• /
• 2014

현재 대학공연장에 다양하고 화려한 조명을 많이 사용된다. 많은 수량이 필요한 등기구에 활용가능한 LED 등기구가 대체 선호되고, LED 등기구 장점인 에너지 절감에 대해 연구를 진행하였다. 설비와 장비에 대한 교체 비용을 포함하여 기존할로겐 등기구보다 LED등기구가 약3,000만원 정도 에너지 절감이 되는 것을 알 수 있었다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 1989.10a
• /
• pp.59-64
• /
• 1989

Daylight is regarded by most people as preferred light source for interior lig-hting. With poper design, daylight can save electric lighting during daytime. This paper attemptes to show that bett-er use of daylight might be the balanced use of supplementary artificial lighting at times and places where the natural 1-ighting is inadequate with consequent c-ost and energy saving.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.14 no.6
• /
• pp.235-243
• /
• 2014

In this paper, we propose an efficient control system for intelligent LED indoor lighting. The proposed an efficient control system for intelligent LED indoor lighting were included to elements such as daylight intensity measured through the PIR sensor and illuminance sensor at lighting style by the schedule defined and the occupancy detection. And it was controlled lighting through to the wireless sensor network, and was designed for the energy savings. Also, the lighting control of indoor lighting based on occupancy detection detect fine movements using a PIR sensor. And an unnecessary lighting intensity control of the window-side and the inside were controlled according to daylight level measurement result using the light sensor. In daylight inflow many case, the window-side lighting was to automatically darker, and in daylight inflow less case, was designed to be automatically bright. The efficiency validate results of an efficient control system for intelligent LED indoor lighting, the brightness of the indoor light were to maximize the energy saving by controlling in real time when entering as indoor a little that external lighting or daylight.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.10a
• /
• pp.971-974
• /
• 2014

Reflect the social concerns of recent energy saving in this paper. The LED market is continuing to grow continuously. But it is now high light energy conversion led lights., We propose converting the light energy-saving method for these LED lights. Generated the cumulative loss of the conversion done at each light change from the current power of the LED lights. The cumulative loss to achieve minimal energy loss resulting from the improved performance.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.24 no.1
• /
• pp.1-8
• /
• 2010

Recently, the demand of landscape lighting for underwater dam is rapidly increased by expansion of hydrophilic space. But it occurred the problems such as weakness of safety and display effect of underwater dam lighting lamp currently in use. Therefore, for solving these problems and improving underwater dam lighting lamp, this paper is focused on safety, energy saving, display flexibility of underwater dam lighting lamp and analyzed the related deriving problems by research on the actual condition. As a result, it presents a developed LED mold type underwater light instead of underwater dam lighting lamp. By the results of this research, it is considered that practical use of underwater dam lighting is very useful in waterside space for dams, water fountain, swimming pool, and etc. Moreover, it can be extended/applied in various ways.