This, in turn, will reduce the energy efficiency of the home. If one of the barriers is insufficient, it affects the other barriers. All barriers play unique roles as part of the building envelope. All of these layers work together harmoniously. The building envelope is made up of multiple layers of barriers: air barrier, vapour barrier, thermal barrier, weather barrier, and interior/exterior finishes. Essentially, it is what protects you from the harsh elements - rain, snow, wind, and sun. What Is A Building Envelope?Ī building envelope is what separates conditioned and unconditioned space in a home or building. This results in reduced overall performance, reduced energy efficiency of the home, and increased utility bills. Again, if there are any holes or leaks in the home, it will notably increase the need for your mechanical system to continuously run in order to keep your home comfortable. The building envelope is also concerned with the technical performance of the home. Therefore, if there are any holes or leaks in the building envelope, you are significantly reducing the overall energy efficiency of the structure. The building envelope is what separates conditioned and unconditioned space. The building envelope is one of the most important pieces of your home, and one of the most important aspects in achieving overall home energy efficiency. The results can help architects and engineers in improving design features in order to achieve improved thermal performance.Building Envelopes, Energy Efficiency, and Your Home Most of the effort in this paper will be made to compare thermal characteristics of typical envelope design in two cities through a computational approach rather than computer modeling which usually needs a great deal of assumptions. Finally, two case-studies which represent typical high-rise buildings in Tabriz, Iran and Ankara, Turkey will be scrutinized with respect to their envelope design to see how the typical design and construction practices in two cities affect heat transfer through envelope during winter and thus, change heating energy consumption requirements. How the envelope design can impact the thermal performance of buildings is then studied. To do this, first the energy efficiency and its implications in building sector is briefly discussed. This article mainly aims at studying the issue of heating energy efficiency through envelope design in high-rise buildings. Since a big portion of heat transfer in buildings is through envelopes, designing and implementing energy-efficient envelopes would result in major improvements in thermal and energy performance of buildings. A main way to achieve this goal is to improve buildings' energy conservation attributes. That's why improving energy performance of buildings has been a key element in discussions about environmental sustainability in buildings in recent decades. Also, about the same percentage of carbon dioxide is emitted because of buildings' construction, maintenance and operation. Systematic evaluation on EETP for three different residential building types, were put forward to assess the energy efficiency and thermal performance of three different building types.Ībout 50% of the primary energy is consumed in buildings. 183 households were sampled and experiments were separately done in typical examples of three different building types. This region in China was selected for the evaluation of EETP (energy and thermal performance analysis), because of its special weather conditions, huge energy consumption (as both heating in winter and cooling in summer are necessary), and other regional characteristics. A survey, in the form of a questionnaire, of energy consumption and thermal situation in different residential building types (detached house, multi-story building, high-rise building), was undertaken in three cities (Shanghai, Hangzhou, and Changzhou) in hot-summer and cold-winter regions, these three cities were selected to represent the most flourishing economic provinces. To fulfill the Chinese government's commitment that Chinese CO 2 emissions would peak in 2030, as a result, improving the energy efficiency and reducing the emissions from the building sector is significantly important. In China, REC (residential energy consumption) is the second largest energy use category (10%) following the industry.
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