• 제목/요약/키워드: Vertical PV

검색결과 27건 처리시간 0.021초

Morphological and morphometric study of pulmonary vein anatomy in relation to cardiac invasive and electrophysiological procedures

  • Harshal Oza;Bhavik Doshi
    • Anatomy and Cell Biology
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    • 제56권4호
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    • pp.428-434
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    • 2023
  • Pulmonary veins (PVs) and their myocardial sleeves play an important role in the development of atrial fibrillation. Hence, detailed knowledge of PV anatomy is required to improve the procedural success rate and prevent complications during cardiac procedures. The aim of this study was to evaluate the PV anatomy along with anatomical variations in the Indian population. Total 100 formalin fixed cadaveric hearts were examined. The number and pattern of the PVs were observed along with the measurement of their horizontal and vertical diameters. The ovality index for each PV was calculated. Classical PV pattern was observed in 62% cases. Variant pattern like additional right middle PV pattern and left common PV pattern were found in 20% and 10% cases respectively. A separate pattern with presence of both right middle PV and left common PV was observed in 6% cases. In the classical pattern right superior PV was the largest followed by right inferior, left superior and left inferior PV. The additional right middle PV had the smallest diameter whereas the left common PV had the largest diameter. Almost all the veins had greater vertical diameters in comparison to horizontal diameters. The variant PVs were oval and had greater ovality index compared to the normal PVs. In classical pattern 54.8% hearts whereas in variant pattern 79% hearts had one or more oval PV. The given data can help clinicians for planning and execution of various interventional and electrophysiological procedures involving PVs.

건물일체형 투명 PV복층창의 설치조건에 따른 단위출력당 발전특성 분석연구 (A Study on the Power Performance Measurement of Transparent Thin-film PV Windows of BIPV Depending on the Inclined Angle)

  • 안영섭;송종화;김석기;이성진;윤종호
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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    • pp.55-60
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    • 2008
  • This study is on the analysis of power output of transparent thin-film PV windows which are integrated into the building envelope instead of traditional windows. 3 installation angles of vertical, horizontal and $30^{\circ}C$ inclination are investigated. To measure power output of PV windows, full scale mock-up house was designed and constructed. The power performance of PV window system was analyzed for horizontal angle, declination angle and vertical angle according to incline angle. Monitoring data are gathered from November 2006 to August 2007 and statistical analysis is performed to analysis a characteristics of power performance of transparent PV windows. Results show that annual power output of PV window with horizontal angle is 844.4kWh/kWp/year, declination angle 1,060kWh/kWp/year and vertical angle 431.6 kWh/kWp/year.

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아파트 입면형 PV적용방식의 발전성능효과해석 연구 (A simulation analysis of PV application method effect on electric power performance in an apartment wall facade)

  • 서정훈;허정호
    • 한국태양에너지학회 논문집
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    • 제26권3호
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    • pp.25-32
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    • 2006
  • The objective of this study is to investigate the effect of building integrated PV application method on power generation. PV modules were integrated to a hypothetical apartment building facade in Seoul, Korea. Three different design options of PV panel mounted on exterior wall were developed for the analysis of cooling effects through ventilation. Numerical simulations using TRNSYS coupled with COMIS were executed to evaluate the design options. Their facade configurations are such as vertically installed PV panels with or without air gap between PV rear surface and exterior wall surface, and the tilted PV panels attached to the exterior wall at an angle of to the horizontal. Parametric results show that there is little difference regardless of the air 9ap width between PV rear surface and exterior wall surface. Special strategies which could effectively cool a PV panel to increase the electric power are required if we prefer to a vertical facade configuration in a building integrated PV installation. Consequently, it is expected that there is no reason for architect to install vertically PV panels with air gap unless active strategies are considered.

태양에너지를 이용한 열-전기 동시생산을 위한 PV-Solarwall 단위모듈 성능평가 연구 (The Performance Evaluation Study of PV-Solarwall Unit Module Solar Thermal-Electric Energy)

  • 김용환;조일식;이의준;현명택;강은철
    • 한국태양에너지학회 논문집
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    • 제25권3호
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    • pp.69-75
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    • 2005
  • The PV-Solarwall system has been introduced as a promising alternative to harness solar energy for both heating applications and electricity generation simultaneously. The system comprises a PV solar panel(for electricity generation). In addition, the solarwall incorporates a fan strategically located behind the PV panel to bring the warm and fresh air from the solarwall into the room. Because of its location and convective cooling principle, the fan also serves to reduce the operating temperature of the PV panel thereby increasing its efficiency. So this PV-Solarwall system holds much promise for saving heating and electricity costs compared with a PV system without solarwall. In particular, by controlling the tilt angle of the entire PV-Solarwall system between $0^{\circ}$(horizontal) and $90^{\circ}$(vertical), the performance of the system can be further evaluated. It is expected that the range of tilt angle PV-Solarwall between $40^{\circ}$ and $50^{\circ}$ will improve the output of the system.

수직형 태양광발전모듈의 계절별 일사획득 및 온도변화에 따른 출력특성 변화에 관한 연구 (Study on variation of electrical characteristics of vertical PV module according to the change of irradiance and temperature)

  • 박경은;강기환;김현일;유권종;김준태
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2008년도 추계학술발표대회 논문집
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    • pp.57-62
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    • 2008
  • Building Integrated PV(BIPV) is one of the best fascinating PV application technologies. To apply PV module in building, various factors should be reflected such as installation position, shading, temperature, and so on. Especially the installation condition should be considered, for the generation performance of PV module is changed or the generation loss is appeared according to installation position, method, and etc. This study investigates variation of electrical characteristics of a PV module according to the change of irradiance and temperature. From this experimental study, we confirmed that the irradiance, the temperature variation and the generation performance of a PV module were appeared differently according seasonal variation. Actually the PV module installed in building facade showed high-generation performance in winter.

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에너지 생산성 분석 기반 양면발전형 수직 태양전지의 활용 가능성 탐색 (A Study on the Applicability of Double-Sided Vertical Photovoltaic Panels Based on Energy Productivity Analysis)

  • 최승주;한승훈
    • 신재생에너지
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    • 제19권4호
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    • pp.84-97
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    • 2023
  • This study aimed to investigate the feasibility and potential applications of utilizing bifacial photovoltaic (PV) panels from an architectural perspective. It also aimed to establish a foundational dataset for installation and operational guidelines for bifacial PV panels through a comparative analysis of energy production performance with single PV panels. The research encompassed several key steps, including a comprehensive literature review, calculation of solar surface radiation values, development of datasets for bifacial and single PV energy production, and a performance comparison between both approaches. The results of the study show that bifacial PV panels exhibit optimized energy production capabilities within the range of 40 to 80 degrees, contingent upon the specific installation location. Consequently, it is recommended that the installation of bifacial PV panels in Korea should primarily focus on southwest-to-west orientation. Furthermore, it was concluded that bifacial PV panels could contribute an equivalent or even superior level of energy production compared to single PV panels, even if their performance exhibited a marginally lower efficiency of 2% to 5% with an 18% power generation efficiency.

영농형 태양광 발전시스템의 특성 및 연구동향 (Characteristics and Research Trend of Agrivoltaics)

  • 장석진;박진주;이준신
    • Current Photovoltaic Research
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    • 제12권3호
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    • pp.74-79
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    • 2024
  • Photovoltaics (PV) is gaining attention as an alternative energy source to fossil fuels. Although the demand for PV is increasing, it requires more than three times the space compared to conventional power generation, leading to limtation of available land for PV installations. Agrivoltaics is combined with agriculture and solar power generation at the same space, making it highly efficient in terms of land use. This review explores various forms of agrivoltaics systems currently being researched and examines the relationship between energy production and agricultural productivity in these systems. With agrivoltaics, about 70-80% of the energy production of conventional solar power can be achieved, while agricultural yields can reach up to 90% of those produced through conventional farming methods.

사례분석에 의한 강구조 스타디움 레일 시스템 분류 (Classification of Rail System in Steel Structure Stadiums by Case Study)

  • 김혜성;윤성원
    • 한국공간구조학회논문집
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    • 제10권1호
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    • pp.67-74
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    • 2010
  • 국내에 설치될 강구조 스타디움에 향후 신재생에너지 중 하나인 태양광 발전을 위한 PV 시스템을 적용하는 것에 따른 강재 어레이에 관한 기초 연구로 해외의 사례를 토대로 구성되었다. 연구를 진행하기 위하여 1990년대 이후 PV 시스템이 적용된 강구조 스타디움 20건을 사례 분석 대상으로 선정하였다. 선정된 20건의 강구조 스타디움을 PV 모듈을 고정하기 위하여 설치된 레일 시스템에 따라 분류해 보았다. 그 결과 격자고정방식 중 선형모듈고정방식과 지붕 통합형이 전체의 28%에 해당되는 것으로 조사되었으며 그 뒤로 레일 고정형 17%, 세로 고정방식 중 모듈그룹 고정 11% 순으로 조사되었다. 또한 스타디움 내부에는 주로 격자 고정방식 중 선형모듈 고정방식과 지붕통합형이 적용되고 있었으며 스타디움 외부나 그 외 부분에서는 앵글 브라킷으로 PV 모듈이 고정되고 있는 것으로 조사되었다.

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전단-스팬비가 작은 고강도철근콘크리트 보의 전단성능 (Shear Capacity of Higth-Strength Concrete Beams With a Shear Span-Depth Ratio Between 1.5 and 2.5)

  • 문정일;안종문;김대근;이광수;이승훈;오정근;장일영;신성우
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1992년도 가을 학술발표회 논문집
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    • pp.106-110
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    • 1992
  • This paper is an experimental study on shear capacity of the high strength R/C beams with a shear span-depth ratio between 1.5 and 2.5. a total of 15 beams was tested to determine diagonal cracking and ultimate shear strength. The major variables are shear span-depth ratio (a/d=1.5, 2.0. 2.5) , vertical shear reinforcements ratio(Vs = 0 , 25, 50, 75, 100% ( Vs = Pv/Pv(ACI)), and concrete compressive strength (f'c= 747㎏/㎠). Test results indicate that ACI 318-89 Eq(11-31) generally underestimates shear strength carried by vertical shear reinforcements, and the mode of failure may change from shear tension to shear compression for the beams having higher Vs than 75%, thus the effectiveness of r-fy on ultimate shear strength (vu) decreased.

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고정식 집속형 PV모듈 복합패널의 BIPV적용성 검토 (A Study on the Application of Fixed-concentrated PV Module Hybrid Panel for BIPV)

  • 서유진;허창수
    • 한국태양에너지학회 논문집
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    • 제25권4호
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    • pp.77-83
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    • 2005
  • The verified thermal efficiency, thermal capacity confirmed the effects of the cooling system. Therefore, it is useful for preventing the PV cell temperature rising when solar radiation accumulates in summer. When adopting a hybrid panel for the BIPV system, the affected areas include the vertical outside walls facing the south, southeast, and southwest on the curtain walls excluding windows. The standards on replace aluminum panel which were the popular exterior material were investigated, Designing practice made sure that it could be manufactured in various sizes, and confirmed the most proper method to install a hybrid panel in the BIPV system.