• Title/Summary/Keyword: Charge behavior

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Effect of Electric Charge on the Operating Behavior of Air-conditioner and Thermal Comfort in Summer Season (여름철 전기요금이 거주자의 냉방기 조작과 온열감에 미치는 효과)

  • Kwon, Suh-Hyun;Bae, Nu-Ri;Chun, Chung-Yoon
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.19 no.10
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    • pp.703-709
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    • 2007
  • Much energy is used in occupying stage of the Building Life Cycle. Electric charge is one of the various factors that influence on energy use of residents. This study focused on electric charge and searched that whether electric charge affects residents' behavior of operating air conditioner and their controlled indoor climate. We surveyed three groups for field study ; A group is residents who live in a studio apartment, B group is residents who live in a university dormitory and C group is residents who live in a apartment with their family. The A and C groups are charged for electric as energy consumption they used. And the B group is students who live in a university dormitory and they are not charged for their energy consumption. We measured the time to use the air conditioner for cooling, on/off temperature of air conditioner, and room air temperature for these three groups. The result shows that consideration for electric charge affects to the residents' behavior of operating air conditioner and their acceptable thermal range.

Analysis of Wall-charge behavior using V-Q Lissajous' figure in AC-PDP driving (AC-PDP 구동에 있어서 V-Q Lissajous' Figure을 이용한 벽전하 거동분석)

  • Chung, Jong-Kab;Cho, Woo-Sung;Choi, Chang-Hun;Ju, Byeong-Keon;Park, Sun-Woo;Kim, Chul-Ju;Rho, Seung-Ryong;Kim, Young-Cho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.11a
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    • pp.111-115
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    • 2002
  • To understand the discharge characteristics in AC-PDP, it is necessary to study on the wall charge behavior. But, it is difficult to measure the wall charge directly. In this paper, the V-Q Lissajous' figure is used to measure the wall charge indirectly and analyze the wall charge behavior. With the V-Q Lissajous' figure, the discharge characteristics of AC-PDP are studied according to vary driving conditions, such as the frequency, pulse duty ratio, and rising & falling time. As a result, the V-Q Lissajous' figure is used to measure the discharge characteristics of the AC-PDP. It is confirmed that firing initial voltage and firing final voltage for discharge are effected by the aboved variables. Related with the wall voltage generation, it is thought that the difference of the slope at the V-Q Lissajous' figure is caused by charged ions inside the dielectric layer.

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Behavior of Residual Charges in Water-tree Degraded XLPE Sheets and Cable

  • Ebinuma, Yasumitsu;Masui, Noriaki
    • Transactions on Electrical and Electronic Materials
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    • v.7 no.5
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    • pp.224-229
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    • 2006
  • Many studies have been done on the application of residual charge measurement in cable degradation diagnosis. In this paper, the behavior of residual charges measured with water-tree degraded XLPE sheets and cable are discussed. At charge injection process, the charge is injected by applying dc voltage as a conventional method, suddenly cut-off ac voltage or impulse voltage. Therefore the residual charge is influenced by the applying process. At charge release process, transient dc current flows when applying ac high voltage and also ac high voltage superimposed to dc low voltage. From the results, new diagnosis method is suggested.

The Effect of Second-level Supervisor's Ethical Leadership on Employee' Proactive Behavior(Taking Charge Behavior, Helping Behavior): The Mediating Effect of Immediate Supervisor's Transformational Leadership (차상위 리더의 윤리적 리더십이 구성원의 선제적 행동(주도적 행동·도움행동)에 미치는 영향: 팀장의 변혁적 리더십의 매개효과를 중심으로)

  • Park, Jae-Chun;Bok, Kyoung-Soo;Kim, Ju-Seob
    • The Journal of the Korea Contents Association
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    • v.16 no.10
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    • pp.730-744
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    • 2016
  • This study attempt to test not only the impact of leadership(second-level supervisor's ethical leadership, immediate supervisor's transformational leadership) on followers' proactive behavior, but also the effect second-level supervisor's ethical leadership on leader's transformational leadership(i.e. TL). In particular, immediate supervisor's TL is explored as a mediating variable in the relationship between second-level supervisor's ethical leadership and followers' proactive behavior. The summary of the hierarchical regression analyses results was as follows: First, the paper showed that second-level supervisor's moral behavior was positively related to immediate supervisor's TL. But behavioral integrity and consistency across contexts was not found to play a unique role in predicting immediate supervisor's TL. Second, second-level supervisor's moral behavior was a positive impact on employee' taking charge behavior and helping behavior. and behavioral integrity was a positive impact on employee' taking charge behavior. But consistency across contexts was not found to play a unique role in predicting proactive behavior. Third, immediate supervisor's TL was a positive impact on employee' taking charge behavior and helping behavior. Finally, the effects of second-level supervisor's moral behavior on employee' proactive behavior were mediated by immediate supervisor's TL. Theoretical and practical implications of our findings as well as directions for future research are provided.

3D Visualization of Packing Behavior of Charge Material (장입재 충전 거동의 3차원 시각화)

  • Sang-Hwan Lee
    • Journal of Korea Foundry Society
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    • v.42 no.6
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    • pp.347-357
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    • 2022
  • In this study, 3D visualization of the packing behavior of the charge material in a foundry was attempted. It was simulated based on the practical conditions of the charge material and the melting furnace. It was confirmed whether the 3D visual simulation realistically implements the packing behavior of the manufacturing site. The realistic packing state by the 3D visual simulation was compared with the ideal packing state. It was analyzed in which case the difference between the two packing states occurred. The advantages of applying the 3D visual simulation to the manufacturing process were investigated, and various application plans in the casting industry were proposed.

Charge Accunmulation Characteristics in LDPE (저밀도 폴리에틸렌의 전하축적 특성)

  • ;;Tatsuo Takada
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.41 no.1
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    • pp.42-49
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    • 1992
  • Charge accumulation characteristics in low density polyethylene (LDPE) has been discussed based upon the internal charge distrubution measured by the pulsed electroacoustic technique. When the negative voltage with respect to earth is applied to the upper electrode, the negative charges near the anode and the positive charges near the cathode are accumulated in LDPE. Also, there was an asymmetric behavior of charge accumulation exhibiting that the charge accumulation near the anode keeps increasing whereas that near the cathode increases first and then decreases. Besides, under the present test conditions the internal charge distrubution becomes stabilized eventually. When the positive voltage with respect to earth is applied to the upper electrode, on the other hand, no such asymmetric charge accumulation was found. Therefore, it can be concluded that the heterocharges are accumulated at the surface region of LDPE subjected to high do voltages and that the begavior of charge accumulation depends on the polarity of do voltage and the position of charge accumulation.

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Charge Confinement and Interfacial Engineering of Electrophosphorescent OLED

  • Chin, Byung-Doo;Lee, Chang-Hee
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1203-1205
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    • 2007
  • Confinement of charge carrier and exciton is the essential factor for enhancing the efficiency and stability of the electrophosphorescent devices. The interplay between the properties of emitters and other adjacent layers are studied based on the physical interpretation with difference of energy level, charge carrier mobility, and corresponding charge-trapping behavior.

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Thermo-Mechanical Behavior of Type 304 Stainless Slab in Hot Charge Rolling Condition (스테인리스 304 슬라브의 HCR 조건시 열적/기계적 거동)

  • C.G. Sun;S.M. Hwang
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2003.10a
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    • pp.183-186
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    • 2003
  • A finite element-based, integrated process model is presented for a three dimensional, coupled analysis of the thermal and mechanical behavior of type 304 stainless slab during hot charge rolling (HCR) and cold charge rolling (CCR) processes. The validity of the proposed model is examined through comparison with measurements. The susceptibility on micro-crack initiation or propagation due to the thermal stress in these two different process conditions was examined. The model's capability of revealing the effect of diverse process parameters is demonstrated through a series of process simulation.

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A Study on the Correction of Error Induced by FTOD for Investigation of a Metal Jet Behavior (금속제트 거동 분석에서의 FTOD 오차 보정에 관한 연구)

  • Joo, Jaehyun;Lee, Heonjoo;Kim, Siwoo
    • Journal of the Korea Institute of Military Science and Technology
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    • v.17 no.5
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    • pp.577-584
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    • 2014
  • In this study, the behavior of a shaped charge projectile's metal jet was analyzed using flash radiography. The projectile was installed horizontally to observe the behavior of jet for enough time. While the X-ray tube heads are fixed at one point, the behavior range of the jet is wide in this experimental set up, therefore the angle between the X-ray tube heads and the jet tip is changed continuously as jet moves forward. Jet particle's locations calculated from the X-ray films become different from their real positions under this situation because of the film to object distance(FTOD) and correction for error by FTOD is required. In this study, a method was devised to correct the error by FTOD and this was applied for the investigation of jet behavior of a 70 mm caliber's shaped charge.

A Numerica analysis on the lift-off motion of Free Conducting Particle in GIS (GIS내에 함유된 자유 도전성 파티클의 거동해석)

  • Lee, Bang-Wook;Koo, Ja-Yoon
    • Proceedings of the KIEE Conference
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    • 1996.07c
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    • pp.1925-1928
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    • 1996
  • In this work, the behavior of conducting wire type particles existing inside the cylinder type coaxial electrode has been systematically investigated by charge simulation method and electrostatic force analysis from the view point of the acquired charging before being lifted off into the gap under the high ac voltage. Spheroidal charge are adopted as a image charge for the CSM analysis in order to calculate the acquired charges of the particles which are erected on the surface of the outer electrode. For this purpose, different material of the particle and their lengths and diameters have been considered in view to calculate their lift-off field, acquired charge and to understand their effect on the lift-off voltage. The results imply that the particle lengths and diameter have an different influence on the particle behavior in GIS system.

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