• Title/Summary/Keyword: 신축계

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양계장 증$\cdot$$\cdot$신축, 사전환경성검토에 묶여 진퇴양난

  • 대한양계협회
    • KOREAN POULTRY JOURNAL
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    • v.33 no.12 s.386
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    • pp.93-95
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    • 2001
  • 충남 연기군에서 채란업에 종사하는 L사장은 최근 농장부지에 연접하여 계란 선별장 및 보관창고 200평을 신축을 허가 받기 위하여 군청에 들렀다가 환경보호과 직원으로부터 사전환경성검토를 받아야 신축허가가 가능하다는 말을 듣고 사전환경성검토를 받기 위한 준비중이다. 그러나 사전환경성검토 같은 환경정책은 양계인에게는 생소한 분야이고 보니 L 사장도 이에 대한 전문지식이 없어 어려움을 겪고 있다. 앞으로도 다른 양계 농가에서도 이와 같은 사례가 많을 것으로 판단되어 사전환경성 검토에 대하여 알아본다.

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A Study on System Stress Analysis of High Temperature Plant Piping with Expansion Joints and Load Hangers (신축이음과 하중행거가 함께 설치된 고온플랜트 배관계의 시스템응력 해석 연구)

  • Park, Do Jun;Yu, Jong Min;Han, Seung Yeon;Yoon, Kee Bong;Kim, Ji Yoon
    • Journal of Energy Engineering
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    • v.23 no.3
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    • pp.116-124
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    • 2014
  • In the plants operated under high temperature condition, piping system load analysis is often performed to prevent accidents caused by thermal deformation and also to locate inspection prioritity points of the piping system. In this study, piping system stress analysis was performed for a pipe system between the reactors in a process plant. The piping system includes typically installed hangers and expansion joints. In order to evaluate the effects of structural components such as hangers and expansion joints, the case for the expansion joint or the hanger under abnormal operation is considered. By comparison anlaysis results of piping system during normal operation and abnormal operation, the role of each pipe components are studied.

Stretchable Characteristics and Power Generation Properties of a Stretchable Thermoelectric Module Filled with PDMS (PDMS로 충진된 신축열전모듈의 신축특성과 발전특성)

  • Han, Kee Sun;Oh, Tae Sung
    • Journal of the Microelectronics and Packaging Society
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    • v.26 no.4
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    • pp.149-156
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    • 2019
  • A stretchable thermoelectric module consisting of 5 pairs of Bi2Te3-based hot-pressed p-n thermoelectric legs was processed by filling the module inside with polydimethylsiloxane (PDMS) and removing the top and bottom substrates. Its stretchable characteristics and power generation properties were measured. The integrity of the module was kept well even after 10 strain cycles ranging from 0 to 0.1. With increasing the tensile strain to 0.2, the module circuitry became open because of joint failure between Cu electrodes and thermoelectric legs. The stretchable thermoelectric module exhibited an open circuit voltage of 4.6 mV with a temperature difference of 2.2K across both ends of thermoelectric legs, and changes in its open circuit voltage were below 5% for tensile strains of 0~0.1. Being elongated for a strain of 0.1, it exhibited the maximum output power of 18.5 ㎼ with the temperature difference of 2.2K across its both ends.

Properties of High Impact Resisting Mortar based on Polyurethane (폴리우레탄계 고내충격성 모르타르의 물성치 연구)

  • Lee, Chin-Yong;Choi, Dong-Uk;Ha, Sang-Su;Kim, Dong-Wan
    • Proceedings of the Korea Concrete Institute Conference
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    • 2008.11a
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    • pp.645-648
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    • 2008
  • The expansion joint is an important part of the bridge, but the failure is occurred on the non-shrinkage concrete which is connected to the slab of the bridge and the expansion joint, and the other problem is the release of anchors in expansion joint due to the impact and vibration during the driven car on the bridge, especially an overloaded car. In this study, to overcome the failure of non-shrinkage of concrete, high impact resisting mortar is developed. The high impact resisting mortar shall be a polyurethane material compounded with an aggregate system to develop excellent flexibility characteristics, high load bearing capacity.

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건축계소식

  • Korea Institute of Registered Architects
    • Korean Architects
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    • v.4 no.12 s.12
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    • pp.8-12
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    • 1969
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