• Title/Summary/Keyword: Triple glazing

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Analysis of the Optimal Thickness and the Heat Transmission for the Triple Glazing System with Vacuum and Carbon Dioxide Gaps (진공 및 이산화탄소 삼중유리 시스템의 최적 두께 및 열관류율 분석)

  • Baek, Sang-Hoon
    • Land and Housing Review
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    • v.11 no.3
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    • pp.61-68
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    • 2020
  • Advanced glazing systems with excellent heat transmission values (Ug-Value) have been developed to reduce the energy consumption and the greenhouse gas emission. This study proposes a triple glazing system consisting of gaps with a vacuum and a carbon dioxide gas layer which is one of greenhouse gases. As a fundamental stage, this study is focused on calculating the optimal glazing thickness and the Ug-Value via a computer simulation, Therm & Window package. As the results, it was presented that the optimal thickness of the proposed triple glazing system is 22.2 mm, and the Ug-Value is 0.273 W/㎡·K. If this glazing system is to be applied to buildings, it could not only reduce building energy consumption but could also contribute to the treatment of carbon dioxide gas which is one of greenhouse gases.

Case Study on 5kWp Transparent Thin-Film BIPV System (5kW급 투광형 박막 BIPV시스템의 실증연구)

  • An, Young-Sub;Kim, Sung-Tae;Lee, Sung-Jin;Song, Jong-Hwa;Hwang, Sang-Kun;Yoon, Jong-Ho
    • Journal of the Korean Solar Energy Society
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    • v.30 no.4
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    • pp.29-35
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    • 2010
  • This study has been carried out empirical research on Transparent Thin-film BIPV modules, BIPV modules installed on the exterior of the building are applied a laminated module 1kWp, double-glazing module 3kWp and triple-glazing module 1kWp. Applied to the total capacity of BIPV modules are 5kWp. In this study, design and construction process of BIPV systems is presented. In addition, through monitoring of the BIPV system, the temperature and the power characteristics of each module were analyzed. During the measurement period, the module temperature measurement results, the maximum surface temperature of $51.5^{\circ}C$ triple-glazing BIPV module showed the highest, followed by double-glazing BIPV module $49.1^{\circ}C$, $44.7^{\circ}C$ laminated modules, respectively. Power output results, the daily average double-layer modules showed 4.10kWh/day, triple-glazing module 1.57kWh, respectively 1.81kWh laminated modules. In particular, the power efficiency of triple-glazing BIPV module was lower than the power efficiency of the laminated BIPV module. This phenomenon is considered to be affected by the module temperature. In the future, BIPV modules in this study the relationship between module temperature and power characteristics plans to identify.

A Study on the Energy Performance Evaluation of Window System with the Balcony Types of Apartments (공동주택 세대내 발코니 유형별 창호의 냉난방 에너지 성능분석 연구)

  • Yoon, Jong-Ho;An, Young-Sub;Kim, Byoung-Soo;Hwang, Sang-Kun
    • Journal of the Korean Solar Energy Society
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    • v.27 no.1
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    • pp.83-90
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    • 2007
  • Apartment balcony has been indiscreetly remodeled since the government permitted remodeling on January 2006. But remodeled balcony has a few problems such as increase of heating energy, surface condensation and cold draft. The reason of thermal problem is mainly caused by the window system in a extended balcony. The purpose of this study is to analyze heating and cooling energy and propose the efficient window types for the extended balcony area of a apartment building. 4 types of window system which have fairly high U value in Korea are investigated as follows ; double clear glass, double low-e glass, triple clear glass and triple low-e glass. Comparing double clear 91ass with double low-e glass, triple clear glass and triple low-e glass, simulation results show that 10%, 7% and 15% saving of total primary energy can be expected.

A Study on the Heat Transfer Phenomenon through the Glazing System (창호를 통한 열전달 현상에 관한 연구)

  • Kang, Eun-Yul;Oh, Myung-Won;Kim, Byung-Sean
    • 한국태양에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.32-37
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    • 2009
  • An energy loss through the window system occupies about 10 to 30 percent on energy consumption of the whole building. That is the reason, several elements for a building composition of window system are the weakest from the heat. Insulation performance increases for the reducing heat loss. Heat transfer through the window system that is reducing heat transfer through conduction, convection and radiation. Insulation performance reinforcement methods classify improving heat specific quality of window system and improving efficiency of whole window system. The most application method among each methods is reducing emission ratio of the window system(Low-E glass), increasing a number of glazing(multiple window) and a method of vacuuming between glazing and glazing. Therefore this study is investigated a sort of glazing and specific character, U-value calculation with changing glazing thickness and calculation of temperature distribution and U-value with a glazing charging gas kind from double glazing. For a conclusion, an aspect of U-value figure at the smallest value case of vacuum glazing with Low-E coating. That means insulation efficiency is the best advantage during a building plan selecting vacuum glazing with Low-E coating for a energy saving aspect. In this way, U-value become different the number of glazing, coating whether or not and selecting injection gas. Therefore selecting of glazing is very important after due consideration by a characteristic and use of building and consideration of strong point and weak point.

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Energy Saving by Combination of Element Technologies of Zero-Energy House (제로에너지 주택용 요소기술 조합에 따른 에너지절감에 관한 연구)

  • Shin, Hyun-Cheol;Jang, Gun-Eik
    • KIEAE Journal
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    • v.15 no.4
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    • pp.77-84
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    • 2015
  • Purpose: In 2008, As the green growth policy was presented, Green Building is made any effort to propagation. In this paper, the respective technologies that are able to considerably reduce the energy demands for heating, cooling, hot-water, lighting and ventilation among the variety of technologies were selected. Method: Design factors such as (1) External insulation, (2) Triple glazing window, (3) LED lighting, (4) External venetian blind, (5) Geothermal and (6) Heat recovery ventilator were derived. In addition, energy saving effects in terms of energy demand, energy consumption and energy cost were investigated using EnergyPlus, building energy analysis tool. Result : The results were as follows. (1) It can be seen that high insulated triple glazing window, heat recovery ventilator and external insulation technology is excellent for energy demand. (2) Unlike energy demand, saving effect of energy consumption and energy cost was shown in order of Geothermal > Triple Window > Heat recovery Ventilation> Insulation> LED Lighting > EVB Blind.

A "Fabric-First" Approach to Sustainable Tall Building Design

  • Oldfield, Philip
    • International Journal of High-Rise Buildings
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    • v.6 no.2
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    • pp.177-185
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    • 2017
  • This research suggests the most effective way for improving energy efficiency in tall buildings is a "fabric-first" approach. This involves optimizing the performance of the building form and envelope as a first priority, with additional technologies a secondary consideration. The paper explores a specific fabric-first energy standard known as "Passivhaus". Buildings that meet this standard typically use 75% less heating and cooling. The results show tall buildings have an intrinsic advantage in achieving Passivhaus performance, as compared to low-rise buildings, due to their compact form, minimizing heat loss. This means high-rises can meet Passivhaus energy standards with double-glazing and moderate levels of insulation, as compared to other typologies where triple-glazing and super-insulation are commonplace. However, the author also suggests that designers need to develop strategies to minimize overheating in Passivhaus high-rises, and reduce the quantity of glazing typical in high-rise residential buildings, to improve their energy efficiency.

Effects of Various Factors on the Energy Consumption of Korean-Style Apartment Houses (한국형 아파트의 냉난방 에너지에 미치는 제 인자의 영향)

  • 유호선;현석균;홍희기
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.14 no.11
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    • pp.972-980
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    • 2002
  • This work is aimed at estimating the effects of various factors on the energy consumption of Korean-style apartment houses using TRNSYS. The factors considered here include the nominal size of floor area, type of remodeling, azimuth, sidewall insulation, and window type. Based on some assumptions, an actual apartment house is simplified into a model that is used for thermal load calculations. The simplified model is validated by showing a good agreement with the actual one in the predicted result. Remodeling balconies into unconditioned buffer spaces yields a favorable thermal performance in comparison with the original type regardless of the nominal size. Incorporating balconies into a conditioned indoor space leads to sharp increases in thermal loads, which must be avoided in view of energy conservation as well as structural problem. A quantitative assessment on the azimuthal effect indicates that the heating energy can be saved up to 16% by taking the south or southeast direction. Reduction in the heating load with enhancing the sidewall insulation is gradual, so that a cost-effectiveness analysis may be needed when amending the regulations concerned. Glazing appears to significantly affect the heat transfer through window. A typical case illustrates that the heating load is decreased about 25% by simply adopting triple glazing instead of double glazing.

The Condensation Risk Assessment of Vacuum Multi-Layer Glass and Triple Glass using the Temperature Difference Ratio (진공복층 유리와 3중 유리의 결로 위험성 평가)

  • Won, Jong-Seo;Nam, Jung-Woo
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.25 no.11
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    • pp.573-577
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    • 2013
  • An external window directly affects the energy performance of its building. In modern well-insulated buildings, U-values for walls of 0.36 $W/m^2K$ or even lower can be realized. In such buildings, glazing with typical U-value of 2.1 $W/m^2K$ or higher creates thermal weak spots on the facade. The performance of the existing triple glass window has been limited to energy savings and condensation prevention. In this study, the performance of condensation prevention of a vacuum multi-layer glass was analyzed. The final conclusion through mock-up experiments is as follows. The surface temperature of the vacuum multi-layer glass was $2^{\circ}C$ higher, and the temperature difference ratio (TDR) was 0.07 lower, than the corresponding values of the triple glass.

An Evaluation of Application Possibility of Window System in the Building based on Optical Characteristics Analysis of DSSC (염료감응태양전지의 광학특성분석을 통한 건축창호 적용가능성 평가 연구)

  • Sim, Se-Ra;Yoon, Jong-Ho;Jeong, Seon-Yeong;Baek, Nam-Choon
    • Journal of the Korean Solar Energy Society
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    • v.31 no.3
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    • pp.109-115
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    • 2011
  • It can gain both the electric energy production and disperse of light at the same time if DSSC is applied in the building as window system. It means to help facade design and to be used in lighting, heating, cooling energy directly by applicating DSSC BIPV window that is possible to daylighting and materialization of color. For this, optical characteristics analysis that is basic step must take precedence. So, basic databases of DSSC are builded and optical performances according to the double and triple glazing are evaluated by analyzing spectral data of various colored DSSC. As a result, Green(4) has the highest visible transmittance that is 28.8%, and Blue(3) has the lowest that is 0.3%. And, in case of optical performance of Green(4) depending on the incidence angle, SHGC and Tsol are decreased sharply from more than $60^{\circ}C$. Finally, It is judged that Red(4), Green(1), (4), Blue(4) are suitable for application in office building because visible transmittance is high and solar heat gain coefficient is low relatively in spite of composing to double and triple glazing.

Study of Design Strategy to Reduce Energy Consumption in a Standard Office Building (사무용 건물의 에너지 절감을 위한 요소별 성능 분석 및 디자인 전략에 관한 연구)

  • Yang, Ja-Kang;Kim, Chul-Ho;Kim, Kang-Soo
    • KIEAE Journal
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    • v.16 no.2
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    • pp.23-31
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    • 2016
  • Purpose: Recently energy consumption is rapidly increasing due to continuous development of social evolution in various field. In this situation, there is a lot of effort to reduce this energy consumption in many ways, especially in building energy. Preceding studies already started to analyze the housing area such as zero energy house and passive house by researching annual building energy consumption, but to apply the results of housing to office building is insufficient since it has different consumption tendency. Method: In this study, eQuest program was used for simulation and the base model is selected among standard office building in ASHRAE 90.1. Variables are divided into passive and active factors for comparison. Result: In passive factors, glazing system showed the highest energy saving rate by 21.3% with triple low-e glass and enhancing wall u-value showed the lowest energy saving rate by 3.6% with 0.15 m2/K. In active factors, VAV system showed 30.9% energy saving rate when compared to CAV system, and heat exchanger showed 10.2% energy saving rate. For regeneration energy part, photovoltaic panel generated 10.4% of base annual energy usage.