• Title/Summary/Keyword: Efficient Energy Use

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Efficient Energy Management for Pyro-processing of Solids - (1) Heat & Mass Balance and Evaluation (고체 고온공정에서 효율적 에너지 관리 - (1) 공정 열정산 및 평가 방법)

  • Ha, Daeseung;Choi, Sangmin
    • Journal of the Korean Society of Combustion
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    • v.21 no.1
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    • pp.18-30
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    • 2016
  • Pyro-process of solids is the way to heat solid materials under high temperature. In this processing, energy efficient use is one of the main concerns due to its high energy consumption of bulk materials. To calculate the energy use of processes, heat & mass balance in simplified 0-dimensional model was performed. Energy calculation by this simplified model can lead to confusion due to simplification. Thus, it is necessary to understand considerations of energy analysis. In this study, cement manufacturing as a very common example of pyro-processing of solids, was introduced for explaining considerations of energy analysis for energy efficient use.

A Study on the Energy Use Behavior according to Apartment Residents' Characteristics (공동주택 거주자의 특성에 따른 에너지사용행태에 관한 연구)

  • Cho, Sung-Heui;Jung, Su-Jin
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2011.04a
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    • pp.116-120
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    • 2011
  • With population growth and quality of life improvement, household energy use also has increased. Under this circumstances, consumers are increasingly required to seek for efficient ways of energy saving. However, precedent studies have largely overlooked energy consumers' consumption behavior, and particularly little research has been conducted on energy consumption or saving patterns of residents living in apartments, which account for over 50% of the Korean housing market. Therefore, this study examined apartment residents' energy use behavior according to apartment residents' characteristics in order to efficient energy use and management. To this examination, survey was conducted of housewives living in apartments in Busan, and 403 data were analyzed by the SPSS WIN 12.0 program. With respect to their energy behavior according to characteristics of subjects, it was different depending on income, housing size, age, the length of residence, and the education standard. When higher income group and larger housing size group, residents were not doing 'passive saving' and 'comfort oriented.' When younger, they were 'comfort oriented.' When well-educated, they were 'comfort oriented.' Also, with regard to the length of residence, significant difference was found. The results of this study can be utilized as effective guidelines in efficient management, policy making, and education method reflecting energy use behavior of energy users.

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Clustering Algorithms for Reducing Energy Consumption - A Review

  • Kinza Mubasher;Rahat Mansha
    • International Journal of Computer Science & Network Security
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    • v.23 no.7
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    • pp.109-118
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    • 2023
  • Energy awareness is an essential design flaw in wireless sensor network. Clustering is the most highly regarded energy-efficient technique that offers various benefits such as energy efficiency and network lifetime. Clusters create hierarchical WSNs that introduce the efficient use of limited sensor node resources and thus enhance the life of the network. The goal of this paper is to provide an analysis of the various energy efficient clustering algorithms. Analysis is based on the energy efficiency and network lifetime. This review paper provides an analysis of different energy-efficient clustering algorithms for WSNs.

Energy Performance Evaluation of a New Commercial Building using Calibrated As-built Simulation with Monitoring Data (건물에너지 모니터링 및 시뮬레이션을 활용한 신축건물의 에너지성능평가)

  • Song, Su-Won
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.20 no.3
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    • pp.155-166
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    • 2008
  • The performance evaluation of a new building is becoming more important because efficient design alone is often not sufficient to deliver an efficient building. However, there is a lack of standard evaluation methods to measure the energy performance of a new construction that has Energy Conservation Design Measures(ECDMs). This study presents an enhanced method based on calibrated whole-building simulation for evaluating the energy performance of new commercial buildings and demonstrates its use using a case-study building, including: an Energy Use Index(EUI) comparison with sub-metered data and an evaluation of the performance of specific ECDMs. The use of this method has determined that the case-study building was shown to use approximately 47% less energy than the base-case building that has the same shape and function as the case-study building(i.e., calibrated as-built simulation mode]), but doesn't include the simulated ECDMs.

Design and Implementation of an ESS for Efficient Power Management of Stand-Alone Type Street Lights (효율적 전력 관리를 위한 독립형 가로등의 ESS 설계 및 구현)

  • Kang, Jingu
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.12 no.2
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    • pp.1-6
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    • 2016
  • Several efforts to replace the use of existing fossil energy resources have already been made around the world. As a result, a new industry of renewable energy has been created, and efficient energy distribution and storage has been promoted intensively. Among the newly explored renewable energy sources, the most widely used one is solar energy generation, which has a high market potential. An energy storage system (ESS) is a system as required. In this paper, the design and implementation of an ESS for the efficient use of power in stand-alone street lights is presented. In current ESS applied to stand-alone street lights, either 12V~24V DC (from solar power) or 110V~220V AC (from commercial power) is used to recharge power in systems with lithium batteries. In this study, an ESS that can support both solar power and commercial power was designed and implemented; it can also perform emergency recharge of portable devices from solar powered street lights. This system can maximize the scalability of ESSes using lithium batteries with efficient energy conversion, with the advantage of being an eco-friendly technology. In a ripple effect, it can also be applied to smart grids, electric vehicles, and new, renewable storage markets where energy storage technology is required.

An Energy Efficient Routing Algorithm Based on Clustering in Wireless Sensor Network (무선센서 네트워크에서의 에너지 효율적인 클러스터링에 의한 라우팅 알고리즘)

  • Rhee, Chung-Sei
    • Convergence Security Journal
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    • v.16 no.2
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    • pp.3-9
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    • 2016
  • Recently, a lot of researches have been done to increase the life span of network using the energy efficient sensor node in WSN. In the WSN environment, we must use limited amount of energy and hardware. Therefore, it is necessary to design energy efficient communication protocol and use limited resources. Cluster based routing method such as LEACH and HEED get the energy efficient routing using data communication between cluster head and related member nodes. In this paper, we propose an energy efficient routing algorithm as well as performance result using simulation.

Thermal Behavior of Air Conditioning System in an Indoor Energy Storage System (실내 에너지저장시스템 공조시스템의 열적 거동에 관한 연구)

  • Kim, Junyoung;Choi, Naksam;Kim, Jintaek
    • New & Renewable Energy
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    • v.17 no.1
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    • pp.33-39
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    • 2021
  • The energy use is increasing as the quality of human life improves. and research on the efficient use of energy in ESS (Energy Storage System) is ongoing. An air conditioner is required for the efficient use of an ESS, as are data on the distribution of the temperature of the latter based on the capacity of the air conditioner. In the absence of an air conditioner, the battery of the ESS reaches its maximum temperature of 40℃ after 2 h. When an air conditioner is present, the temperature of the battery stabilizes as the capacity of the former increases.

Towards More Efficient Energy Use for Green Remediation (녹색정화를 위한 에너지의 효율적 이용)

  • Hwang, Sang-Il
    • Journal of Soil and Groundwater Environment
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    • v.14 no.6
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    • pp.95-100
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    • 2009
  • Strategies incorporating more efficient energy use into remediation of contaminated sites, which are those of important elements in green remediation, are developed and discussed in this work. Firstly, from several case studies of remedial actions in Korea, thermal desorption and/or in-situ method including pump-and-treat were found energy intensive and soil washing less intensive. In order to use energy efficiently and minimize use of fossil fuels during land revitalization process, it is necessary to optimize energy intensive systems, to use low energy remediation systems (such as bioremediation), and to integrate renewable energy sources. Furthermore, economic incentive systems such as subsidy need to be adopted if renewable energy sources are incorporated into remediation of contaminated sites.

A Study on the Institutionalization of Energy Efficient Operation and Maintenance Program for Existing Buildings (기존 건축물의 운영단계 에너지효율 개선을 위한 관리 및 제도화 방안 연구)

  • Cho, Jinkyun;Lee, Youngjae
    • Journal of the Korean Solar Energy Society
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    • v.40 no.3
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    • pp.33-42
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    • 2020
  • Operational energy is the energy that is used during the occupancy stage of building life cycle. It is associated with relatively longer proportion of infrastructure's service life and can constitute 80-90% of the total energy. Assessing the energy use in buildings is essential since they are significant contributors to energy demand. In this regard, energy performance of buildings has become the focus of many regulations. This paper aimed to review the regulations about the energy performance of buildings during their operational stage in Korea. For energy efficient operation program for existing buildings, governments should implement policies and support voluntary programs that rely on collecting and managing building performance data and using this data to inform public and private-sector operation and maintenance strategies. Implementing these policies and programs requires tools and processes for collecting, curating, managing, analyzing, and publishing this data. Energy assessment tool, that is a data resource management tool that enables to assess energy use across the entire portfolio of buildings, is also required.

Recommended Practice for the Improvement of the Unit Cost of Power Consumption in Non-utility Electrical Installation (자가용전기설비의 전력원단위 향상을 위한 전력관리 방안)

  • 김세동
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2000.11a
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    • pp.235-240
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    • 2000
  • This paper presents the reasonable method for electric power management through efficient use of electricity. With a rapid of national economics and living standard, electrical energy consumption markedly increased. Especially it is increased electrical energy consumption in commercial buildings and thus an energy conservation through efficient use of electricity became more important.

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