• 제목/요약/키워드: Energy Requirements

검색결과 1,371건 처리시간 0.027초

초고층 주거건물의 에너지 성능 분석에 관한 연구 (A Study on the Analysis of Energy Performance of High-rise Residential Buildings)

  • 석호태;김장한;정만석
    • 한국주거학회논문집
    • /
    • 제15권4호
    • /
    • pp.35-43
    • /
    • 2004
  • The environment pollution is very important problem. Even at the field of architecture, a study about method of saving energy and constructing environment friendly building will have performed with activity. But trends of Korea housing market are changed that the height of building become more higher and the level of comfort going up. Therefore, these requirements force to increase the energy usage for indoor environmental controls. Thus, the purpose of this study is to reduce the heating and cooling energy requirements of High-rise Residential Buildings by the analysis of Energy Performance. From now on, we search improvement plan for the most efficient Energy Saving at present High-rise Residential Buildings.

품질기록(品質記錄) 관리(管理)를 위한 효율적(效率的)인 System 수립(樹立) 방안(方案) (A Study on the Establishing Efficient System for the Control of Quality Records)

  • 이상복;김영세;홍경식
    • 품질경영학회지
    • /
    • 제23권2호
    • /
    • pp.103-112
    • /
    • 1995
  • This paper describes the method of establishing efficient system for the control of quality records. To establish the best control system of quality records, the organization must not only understand ISO Code requirements for quality record complectly but also identify the documents to be controlled as a quality records correctly. In addition, when establishing the system, the organization must absolutely consider the fact that quality records shall be maintained to demonstrate conformance to specified requirements and the effective operation of the quality system. This will provide the guidance which need to establish the system for quality control to the organization which produces documents in accordance with ISO Code requirements.

  • PDF

벼의 순환병류건조기(循環竝流乾操機)의 시뮬레이션 (Simulation of Rice Circulating Concurrent-flow Dryer)

  • 금동혁;이왕석
    • Journal of Biosystems Engineering
    • /
    • 제13권3호
    • /
    • pp.59-70
    • /
    • 1988
  • A computer simulation model for rice circulating concurrent-flow dryer was developed and verified by conduction a series of pilot-scale experiment. The effects of design parameter and operating conditions on dryer performance were analyzed by using simulation. The results indicated that the developed model was found suitable for analyzing operating characteristics. The other results from simulation also showed that; 1) an increse in the initial moisture content resulted in an increase in the drying rate and a reduction in the grain temperature and total energy requirements. 2) an increase in the drying air temperature resulted in an increase in the drying rate and grain temperature. 3) an increase in air flow rate resulted in an radical increase in drying rate, fan power requirements and total energy requirements but an radical decrease in final head rice yield. 4) an increase in the bed depth resulted in an increase in fan power requirements and a lowering of the final head rice yield.

  • PDF

선행연구 분석을 통한 녹색건축 인증제의 개선방향에 관한 연구 - 공동주택 부문을 중심으로 (A Study on the Improvement of G-SEED through Analysis of the Previous Studies - Based on Apartment Houses)

  • 윤요선;류수훈
    • KIEAE Journal
    • /
    • 제13권5호
    • /
    • pp.31-42
    • /
    • 2013
  • Green Standard for Energy and Environmental Design (G-SEED) is evaluates the eco-friendliness of the building as an abjective means. Study in green building is made actively, and is being developed through constant revision. However, study results of green building have not been fully reflected in the standard. Therefore, this study analyzes the previous studies about G-SEED and checks the reflection of requirements. This study will be a reference of future revision of G-SEED. Score of items are divided into low and high score items. These items should be reflected appropriately in the standard through the score adjustment. Some requirements proposed in previous studies was reflected, while substantial requirements was not reflected. Proposed improvement requirements are classed as to establish specific standards, strengthen standards, propose a new evaluation method to existing items, and add new items.

A DEVELOPMENT FRAMEWORK FOR SOFTWARE SECURITY IN NUCLEAR SAFETY SYSTEMS: INTEGRATING SECURE DEVELOPMENT AND SYSTEM SECURITY ACTIVITIES

  • Park, Jaekwan;Suh, Yongsuk
    • Nuclear Engineering and Technology
    • /
    • 제46권1호
    • /
    • pp.47-54
    • /
    • 2014
  • The protection of nuclear safety software is essential in that a failure can result in significant economic loss and physical damage to the public. However, software security has often been ignored in nuclear safety software development. To enforce security considerations, nuclear regulator commission recently issued and revised the security regulations for nuclear computer-based systems. It is a great challenge for nuclear developers to comply with the security requirements. However, there is still no clear software development process regarding security activities. This paper proposes an integrated development process suitable for the secure development requirements and system security requirements described by various regulatory bodies. It provides a three-stage framework with eight security activities as the software development process. Detailed descriptions are useful for software developers and licensees to understand the regulatory requirements and to establish a detailed activity plan for software design and engineering.

에너지 저장기술의 최적 서비스 선정 방법 (Optimal ES (Energy Storage) Service Selection Method)

  • 이지현;제갈성;김현실;맹종호
    • Current Photovoltaic Research
    • /
    • 제11권2호
    • /
    • pp.58-65
    • /
    • 2023
  • The expanding significance of energy storage (ES) technology is increasing the acceptability of power systems by augmenting renewable energy supply. To deploy such ES technologies, we must select the optimal technology that meets the requirements of the system and confirm the technical and economic feasibility of the business model based on it. Herein, we propose a method and tool for selecting the optimal ES technology and service suitable for meeting the requirements of the system, based on its performance characteristics. The method described in this study can be used to discover and apply various ES technologies and develop business models with excellent economic feasibility.

Applicability of the induction bending process to the P91 pipe of the PGSFR

  • Kim, Nak Hyun;Kim, Jong Bum;Kim, Sung Kyun
    • Nuclear Engineering and Technology
    • /
    • 제53권5호
    • /
    • pp.1580-1586
    • /
    • 2021
  • The application of induction bending processes to industrial pipe production is increasing. The induction bending process has the effect of reducing the number of inspections and preventing leaks by reducing the weld of the pipe. For these reasons, efforts have been made to apply an induction bending process to the pipe of the PGSFR under development in Korea and this is the first attempt in the SFR design. Since the PGSFR pipe has a relatively large diameter-to-thickness ratio, it is difficult to fabricate an induction bending pipe that meets the requirements. In addition, the material properties may change because the pipe heats to a very high temperature during the induction bending process. In this study, P91 pipes were fabricated by induction bending, and the results from analyzing the induction bending process' applicability to the P91 pipe of the PGSFR are examined. The various dimensional measurements of the pipes fabricated by the induction bending process were surveyed to determine whether the requirements of the ASME Code were met. The minimum thickness, ovality, and wall buckling measured in the fabricated pipe met all the requirements. Tensile, impact, and hardness tests at various locations of the fabricated pipe also satisfied the requirements.