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Most of nations likely in Europe, and America, the developed countries, prosecute onward on the Zero Energy Polices directing into all new buildings to be zero-energy buildings around the year 2020 to 2030. In 2010, European Union (EU) legislated the definite direction of policy about the zero-energy Building through the major building energy guideline, EPBD (Energy Performance of Building Directive) recast. All member states should be supervised that all new buildings have to be nearly zero-energy buildings until the year 2020, and until the end of year 2018 all public buildings should prescribe guarantee to be the zero energy building. In America, the establishment of target was made that the greenhouse gas emission shall be reduced up to 80%. Also, all new government office buildings should follow the construction design procedure for the net zero energy building after the year 2020, so at the end of the year 2030 all office buildings would meet the demand for net-zero energy building. In Japan, 2010 Energy Basis Plan was proposed that all new public buildings until the year 2020 shall attain an average of the net zero energy building provision, and also for the new buildings until the year 2030. In Korea, the residential buildings would meet 50% reduction as a low energy level, above 90% reduction of heating & cooling energy as a passive house level from 2017, and all should be compulsory to apply the zero energy house standard from 2025. For the non-residential building, 30% reduction in the year 2017, 60% reduction in the year 2020, and all should be compulsory to be the zero energy building in the year 2025. Since the year 2009 the thermal insulation standard of the building envelope is intensified annually to meet the passive house standard by the year 2017. On this article, the current domestic and foreign policies about the prevalence of zero energy building procedure are minutely examined. The four categories of policy & standard procedure are proposed instrumentally about the zero energy building policy & action strategy.
In energy-saving buildings, unlike the construction technologies of conventional buildings, elemental technologies for implementing building sustainability and green buildings are applied in complex and diverse ways allowing the management elements of construction projects to gradually increase. Further, more efficient project implementation separate from the traditional methods is required to implement the energy-saving buildings due to the high level technology required and the decision-making processes of effective technology application in terms of cost, are also necessary. In this study, we intend to establish an integrated design method and process for high-rise zero-carbon green homes of South Korea and present the analysis results of the construction details and energy performance derived from the effective project implementation. As a result, the final energy performance simulation implemented using the technologies, materials, and details selected by the proposed integrated design method confirmed, in the areas of heating, cooling and lighting as the primary goal of this study, 87% reduction of heating and more than 50% reduction of power, verifying the proposed integrated design process and passive details can be a solution that is applicable to high-rise apartment buildings.
A double skin system for curtain wall buildings has been proposed as an energy efficient system because it is known to minimize environmental impacts from outside while utilizing natural conditions. If applied with appropriate plans, various environmental advantages can be secured, such as reducing heating load by thermal buffering in winter, and cooling load by blocking. Although a variety of methods have been devised for reducing building energy consumption in double skin window systems, improving insulation performance has generally been the main focus, unfortunately which causes overheating in summer, not only increasing cooling loads but also resulting in thermal discomfort for residents. Therefore, quantitative performance analysis data such as Solar Heat Gain Coefficient (SHGC) of the developed Slim-type Double Skin Window (SDSW) Systems need to be presented in order to reduce cooling energy consumption. In this study, various SHGC tests of the SDSW system using solar simulator have been conducted in conditions of blinds open and closed, and in different window opening positions. Simulation evaluations applying these data were carried out for comparison with the values obtained by SHGC experiments. Values of the SHGC tests based on KS L 9107 ranged from 0.07 to 0.30. Furthermore, Simulation tools Window grounded on ISO 15099 were used for calculating SHGC, and these results were within 5% of the SHGC test values as per KS L 9107. In total, SHGC data of 20 type samples are presented for the developed SDSC system, and the samples are categorized according to the glass type and the blind slit angles.
Purpose: The energy consumption in Uzbekistan buildings accounts for more than half of the total energy consumption in Uzbekistan. In particular, Uzbekistan is estimated to produce 100 million tons of carbon dioxide per year only through the use of building energy. In particular, residential buildings have caused the largest energy consumption in Uzbekistan. For this reason, this study analyzed the standard rural housing plans of Uzbekistan and suggested energy saving alternatives by improving the insulation performance. Method: This research was conducted in four stages. For the first step, preliminary investigations were carried out such as climate analysis of Uzbekistan and prior studies on Uzbekistan buildings' energy consumption. For the second step, the Uzbekistan building regulations were analyzed in order to improve the standard rural housing in Uzbekistan and confirm the direction of the alternatives. For the third step, the analysis of the rural housing plans were conducted to optimize the design of the AOP system to be installed in Tashkent. Finally, simulation results of energy efficient alternatives were compared with the result of existing standard rural housing and the model house constructed in Tashkent. Result: Energy efficient alternatives were calculated to consume 64%~76% less heating energy than the existing standard rural housing.
The purpose of this study is analyzing the application effect of the Solar Control Window(SCW) developed in Korea when used in Hanoi, Vietnam. For the field application, the SCW is needed to be renovated according to the Vietnamese climate and market characteristics. First, the Cooling load is much larger than the Heating load in Vietnam because of the climate characteristics. Second, double glazing is used for constructing new buildings nowadays while single glazing is generally applied in existing buildings in Vietnam. For these reasons, the double window with single glazing and blinds is developed for Vietnamese Buildings. Plus, two types of SCW are proposed for new buildings and existing buildings each. Application of the renovated SCWs results in about 18% savings of cooling and heating energy consumption compared to the existing buildings.
This study aims to investigate optimized mechanical pressurization of each outdoor air temperature in order to resolve noise problems associated with stack effect. For this study, noise levels resulted by stack effect was measured during three months of winter, and airtight practices and mechanical pressurization practices of each outdoor air condition employed on a high-rise office building under operation. Noise level was measured in the elevator halls located on the lobby floor(1st floor) and the highest floor (47th floor). The average noise level of the 1st floor was 59 dB(A) under all HVAC system-off, exceeding the recommended level 57 dB(A), even after average of 9dB(A) was reduced after airtight practices were employed, After mechanical pressurization practices as pressurized floor in high-rise zone were employed, most noise levels met the recommended niose level 57 dB(A) for 1F elevator lobby and 48 dB(A) for 47F elevator lobby.