Energy Efficiency Of High-rise Buildings Research Articles

Optimization of Double-Skin Façades for Heating and Cooling in High-Rise Buildings: A Case Study in Kuwait City

In hot arid climates such as Kuwait, the challenge of heat transfer through building façades has prompted significant debate. Determining the heating and cooling loads of buildings in such environments is crucial to assess their energy efficiency. Objectives: This research was undertaken to gauge the energy efficiency of high-rise buildings outfitted with double facades in Kuwait City, emphasizing their heating and cooling loads. Methods: A parametric computer simulation was employed, utilizing the eQUEST program, to model a prototype of a high-rise building with double facades in Kuwait City. This model was used to quantify the double façade's efficacy in mitigating heating and cooling loads, drawing comparisons with typical glazing buildings in the city. Results: Findings indicate that the total energy consumption for space conditioning in buildings with DSFs was 235 MWh/year for heating and 2,890 MWh/year for cooling, aligning well with the energy conservation program (MEW/R-6/2014) benchmarks in Kuwait. Additionally, when optimally configured with materials like polycarbonate and an optimal cavity width of 50cm, DSFs contributed to a significant reduction in building loads. Specifically, the DSFs constituted 2,900 MWh/year of the total cooling load and 235 MWh/year of the heating load. Conclusion: Our results underscore the potential of double-skin façades in decreasing energy consumption for both heating and cooling purposes, demonstrating their superiority over conventional high-rise building facades in Kuwait City.

Sustainable High-rises

Sustainable High-rises

Sustainable High-rises

Sustainable High-rises

Assessment of Factors Affecting the Energy Efficiency of High-Rise Buildings in Modern Cities

The problem of energy consumption of modern high-rise buildings is becoming increasingly important. The growing number of high-rise buildings and the development of urban infrastructure have resulted in the increased energy consumption. Modern high-rise building construction affects the density of urban space and significantly changes local climatic conditions. The development of local climatic factors in thigh-rise building construction and their impact on the energy efficiency of buildings is a relevant and insufficiently studied problem. The article analyzes the influence of modern urban development on the climatic and aerodynamic conditions of the terrain. The assessment of climatic factors influencing heat losses of a high-rise building is carried out. High-rise buildings in the city of Moscow are considered; calculations are made and qualitative and quantitative parameters of the variation in the main climatic factors are given with reference to the architecture of the building. Using the example of the Evolution Tower, calculations have been made and dependency graphs of the temperature and wind speed on the height of the building are presented. The results of the research can be used to assess the influence of climatic factors on the energy costs of high-rise buildings, and can be taken into account in the design of modern energy-efficient buildings.

Energy efficiency of high-rise buildings

The article is devoted to analysis of tendencies and advanced technologies in the field of energy supply and energy efficiency of tall buildings, to the history of the emergence of the concept of "efficiency" and its current interpretation. Also the article show the difference of evaluation criteria of the leading rating systems LEED and BREEAM. Authors reviewed the latest technologies applied in the construction of energy efficient buildings. Methodological approach to the design of tall buildings taking into account energy efficiency needs to include the primary energy saving; to seek the possibility of production and accumulation of alternative electric energy by converting energy from the sun and wind with the help of special technical devices; the application of regenerative technologies.

Smart glass as the method of improving the energy efficiency of high-rise buildings

The question that has to be answered in high-rise building is glazing and its service life conditions. Contemporary market offers several types of window units, for instance, wooden, aluminum, PVC and combined models. Wooden and PVC windows become the most widespread and competitive between each other. In recent times design engineers choose smart glass. In this article, the advantages and drawbacks of all types of windows are reviewed, and the recommendations are given according to choice of window type in order to improve energy efficiency of buildings.

Optimization of thermal stability of structural elements of high-rise buildings to increase their energy efficiency

The problem of improving energy efficiency of modern urban buildings is becoming increasingly important. Urbanization, which con-tributes to the growth of megacities, causes an increase in the number of modern high-rise buildings and the development of urban infrastructure, resulting in increased energy consumption. When dealing with the energy efficiency of high-rise buildings, it is necessary to take into account such factors as the location, building orientation with respect to the cardinal di-rections, functional purposes, a three-dimensional and design solutions. Conservation of energy inside high-rise buildings, which contributes to minimum energy consumption in order to create and maintain a comforta-ble temperature, is one of the urgent tasks. This problem can be solved by thermal insulation of cladding and the use of effective heat-insulating ma-terials to reduce the negative impact of climatic factors on high-rise build-ings. Using the example of the Evolution Tower, we analyzed Moscow City high-rise buildings, made calculations and graphs of variation in the temperature and wind speed throughout the height of the building. An in-crease in wind speed and a decrease in temperature throughout the height of the building create extreme conditions that affect the heat loss of high-rise buildings, which must be taken into account in the heat protection of external enclosing structures.

The improvement of thermal characteristics of autoclave aerated concrete for energy efficient high-rise buildings application

Nowadays, the problem of energy saving is very relevant. One of the ways to reduction energy consumption in construction materials production and construction of civil and industrial high-rise buildings is the application of claddings with heat-insulating performance. The concept of energy efficiency of high-rise buildings is closely related to environmental aspect and sustainability of applied construction materials; reducing service costs; energy saving and microclimate comfortability. A complexity of architectural and structural design as well as aesthetic characteristics of construction materials are also should be considered. The high interest focused on materials with combined properties. This work is oriented on the study of energy efficiency of buildings by improving heat-insulation and strength performance of autoclave aerated concrete. The applied method of sulfate activation of lime allows monitoring phase and structure formation in aerated concrete. The optimal mix design of aerated concrete with the compressive strength up to 8.5 MPa and decreased density up to 760 kg/m3 was proposed. Analysis of structure at macro-and microscale was performed as well as the criteria of an optimal porosity formation was considered a number, size, shape of pore and density of interior partition. SEM analysis and BET method were performed in this research work. The research results demonstrated the correlation between structure and vapor permeability resistance, also it was found that the increase of strength can lead to reduction of thermal conductivity.