• 에너지공학
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• 제24권4호
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• pp.183-191
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• 2015

친환경적이면서 영구적인 저에너지 절약방안에 대한 연구는 지금도 미래도 영원한 과제일 것이다. 다만 그 절차에 있어 누구나 쉽게 접근이 가능하고 절감요소를 적용함으로서 사용자에게 가시적인 이익이 나타내는 생활밀착형 절감기술이 요구되고 있다. 정부의 정책에 있어 기존건축물 에너지성능 개선은 그 절차가 복잡하고 전문가에 의뢰시 소요비용과 신뢰성 문제가 야기 되었다. 이에 따라 본 연구는 유즈가 간단히 프로그램에서 내가 교체하고픈 부위 요소만 선택하면 에너지변화량과 등급예측을 가능하게 함으로서 개인별 취향에 따른 맞춤형 설계가 가능하게 하여 언제 어디서나 간단하고 편리한 에너지개선안을 제시하고자 한다.

• KIEAE Journal
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• 제16권2호
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• pp.5-10
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• 2016

Purpose: Recently, many public office buildings which were built by curtain wall increased rapidly, but the results of the investigation of the government, these buildings have been found that the heating and cooling thermal load is high, and showed low energy efficiency. Method: To evaluate the effects by applying outdoor louver and indoor blind, which can control solar radiation in order to reduce the heating and cooling load of public office building which was built by glass curtain wall. The heating and cooling load was calculated via Energyplus, building and outdoor louver, indoor blind were modeled by Google sketchup connected to Energyplus. Result: The results of this study were as follows; the case of applying various outdoor louver, the heating and cooling load all decreased as compared to the case without applying outdoor louver, the case of applying indoor blind, the heating and cooling load decreased as compared to the case without applying indoor blind, but indoor blind showed low energy performance comparing outdoor louver.

• 한국태양에너지학회 논문집
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• 제38권3호
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• pp.37-45
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• 2018

The purpose of this study is to review all phases of the pilot project through the implementation of the Green Remodeling process. The Green Remodeling process was developed to facilitate anyone's ease of use. The Green Remodeling process consists of five phases : project, plan, design, construction, operation and maintenance. Each stage simulation was performed and the energy saving was predicted. Architects can easily obtain energy information of a building. In this study, we propose a green remodeling proposal plan through pilot project. Ultimately, the spread of green remodeling will greatly contribute to achieving the goal of reducing greenhouse gas emissions.

• 도시과학
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• 제11권1호
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• pp.15-20
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• 2022

The issue of hotel energy use is growing more significant as the hotel industry expands. It is important to take into account the electrical installation and space-specific features in a room unit in order to comprehend the energy consumption of a hotel guestroom. In light of this, this study aimed to analyze standby power for enhancing the energy efficiency of a hotel guestroom during check-out status. This study was conducted in three steps: (i) data collection; (ii) analysis of energy consumption patterns; and (iii) analysis of energy efficiency improvement plan. The main findings of this study can be summarized as follows. First, 32.24% of energy was used in fan coil unit) during check-out status. Second, a hotel guestroom had a 4.30% energy saving potential, based on energy consumption patterns during check-out status. This study can contribute to support hotel management to operate guestrooms differently by helping them identify patterns in energy use and realize potential savings.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.946-951
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• 2009

The research aims to study a new, optimum and renewable energy application method that can cover the minimum energy and operation costs within a range of school budgets. By deriving the optimum application method, it is expected to maximize the cooling/heating and water heating energy saving efficiencies for educational facilities. Therefore, this research carried out a study on the new/renewable energy utilization technique diffusion expansion method and the optimum method. As a result, the first optimum plan was introduced with the multi-type geothermal heat pump 174kW + solar heat collector $94\;m^2$ + highly efficient electronic cooling/heating device (EHP) 249.4kW. On the other hand, the second optimum plan was induced as the multi-type geothermal heat pump 255.2kW + highly efficient electronic cooling/heating device (EHP) 168.2kW.

• 설비공학논문집
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• 제21권10호
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• pp.564-574
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• 2009

The study is conducted to study a new, optimum and new and renewable energy application method that can cover the minimum energy and operation costs within a range of school budgets. By deriving the optimum application method, it is expected to maximize the cooling/heating and hot water supply energy saving efficiencies for educational facilities. Therefore, this research implemented a study on the new and renewable energy utilization technique diffusion expansion method and the optimum method. As a result, the first optimum plan was introduced with the multi-type geothermal heat pump 475.6 kW+highly efficient electronic cooling/heating device(EHP) 545.2 kW. On the other hand, the second optimum plan was induced as the multi-type geothermal heat pump 261kW+solar heat collector $240\;m^2$+highly efficient electronic cooling/heating device(EHP) 759.8 kW.

• KIEAE Journal
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• 제14권2호
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• pp.37-46
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• 2014

University buildings are energy-guzzling facility that consume more than 10,000TOE within a campus annually. Even the consumption is on an upswing trend. Behind such high consumption are there cheap power rates for education facility, lack of high-efficiency equipment and ever-increasing use of various information equipment. Being keenly aware that greenhouse gas emission increases due to such rise of energy consumption, the present study carried out a case study. In the case study, the study chose the buildings of E university from top 10 universities that consume energy most in Seoul and examined the current status of their energy consumption and greenhouse gas emission. And then it set the reduction target of greenhouse gas by year. Putting aside a middle and long-termed strategy for later endeavor, it first established the 1st year's implementation plan (2014) for energy saving and greenhouse gas reduction with limited budget and according to greenhouse gas reduction target. The plan is specified as follows. Targets for energy saving are mainly divided into two sectors: machine equipment and electric equipment. 7 ideas were proposed. Three ideas to improve machine equipment are to replace with high-efficiency boilers and chillers and to adjust the position of the cooling tower. By doing so, it was estimated that energy could be saved by 176.34TOE in total and greenhouse gas could be reduced by 370.771t$CO_2$-eq. Four ideas to improve electric equipment include the replacement with LED lights, LED emergency lights and high-efficiency motors and the installation of motion sensors. It was calculated that such replacement could conserve 1,076.08TOE (electric energy) and reduce 2,181.420t$CO_2$-eq (greenhouse gas).

• Journal of Advanced Marine Engineering and Technology
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• 제31권5호
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• pp.592-598
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• 2007

The fuel charge is getting higher in navigation cost. Therefore, shipowners try to find the method for reducing oil consumption. ESS(Energy Saving System) is one of he method. ESS is the system consisted with two inverters, ESS control unit and monitoring system. Two inverters control two main sea water cooling pumps. In the ESS control Unit, the control algorithm finds optimized point to decrease a power consumption of main sea water cooling pumps. Monitoring system observes ESS not to work improperly. ESS is experimented in the laboratory with real condition and analyzed in every view. After experiment, the result of the experiment shows that the control algorithm works correctly and safely. ESS has a plan to be operated in the ship soon. In that case, additional devices are needed to connect ESS with cooling system of the vessel. So the development of addition device is needed and being studied.

• 설비공학논문집
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• 제25권10호
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• pp.540-547
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• 2013

We experimented with the energy saving effect of applying a multiplex heat pump system and suggests a dissemination plan for new and existing educational facilities. The development and dissemination of a new system could reduce energy consumption by up to 57%, and help solve environmental issues. Experimental performance evaluated in the kindergarten to analyze the energy saving effect of the cooling and heating system. The average daily COP of the cooling and heating period in the field test was 3.79. Our results showed that the annual energy consumption was reduced, and proved that the multiplex heat pump system is effective in reducing energy consumption.

• 한국재난정보학회 논문집
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• 제20권1호
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• pp.117-127
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• 2024

연구목적: 중소기업 제조공장에서 에너지 관리, 온도, 습도, 분진 및 가스, 공기 질, 기계작동 상태 등을 통합적으로 모니터링하여 에너지 절감 및 제조 공장 인프라의 안전성 향상을 위한 기반 연구를 수행하는 것이 목적이다. 연구방법: 이를 위해 디지털 전력량계 및 IoT 센서를 통해 에너지 관련 데이터 및 환경적인 정보들을 실시간으로 수집하였으며, 수집된 정보를 기반으로 모니터링 및 분석을 통해 에너지 절감을 위한 상황 전파 및 대응을 위한 연구를 진행하였다. 연구결과: ESG 경영 활동의 핵심 지표에 속하는 에너지관리, 비용 절감과 안전성 향상을 고려한 적용 방안을 제시하였다. 결론: 본 연구는 기업에서 실제적인 사례 연구로 스마트공장에서 다양한 센서 장치와 관련된 장치들을 활용하였으며, 이를 통해 수집된 정보를 기반으로 에너지 절감 및 안전성 향상에 대한 기반의 체계를 제시하였다.