scholarly journals THE IMPACT OF THERMAL PERFORMANCE ON THE ROOF SURFACE TO ENERGY EFFICIENT OF HIGH-RISE BUILDING IN THE TROPICAL REGION

Arsitektura ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 129
Author(s):  
Sri Yuliani ◽  
Wiwik Setyaningsih
Keyword(s):  
Thermal Performance ◽  
Energy Efficient ◽  
Heat Load ◽  
Building Envelope ◽  
Tropical Region ◽  
High Rise ◽  
High Rise Building ◽  
Real Model ◽  
Urban Heat ◽  
The Impact

<p class="Abstract"><em>The surface temperature of the building material may release a heat load in the micro-environment. The largest building envelope receives the heat load of solar radiation is the roof. The strategic roof position at the top of the building has the opportunity to radiate heat received into the environment. Heat emissions lead to rising temperatures, so it is necessary to lower the temperature in micro-environment. When the heat of the building is not lowered will lead to an increase in the urban heat island (UHI). The objective of the study was to find the relationship between the thermal performance of the roof of the building and the energy efficiency in the high-rise building, in order to establish efficient thermal comfort. The research method uses experimental way in real model which is in Surakarta City, as humid tropical climate area. The result of the study is a comparison of the heat performance of three roofing materials which would later recommend the criteria of energy efficient roof for high buildings.</em><em></em></p>

scholarly journals Transition towards an energy-efficient scientific Office Setup in Austria’s largest (Plus-)Plus-Energy Office Building – an Analysis

2020 ◽  
Vol 172 ◽  
pp. 22008
Author(s):  
Alexander David ◽  
Thomas Bednar
Keyword(s):  
Energy Efficient ◽  
Cooling System ◽  
Electrical Power ◽  
Transition Process ◽  
Office Building ◽  
High Rise ◽  
High Rise Building ◽  
Electrical Power Consumption ◽  
The Impact ◽  
Over 40 Years

Near the center of Vienna one can find the world’s first office tower which was designed to feed more energy into the power grid than is required to operate and use the building. This building is the result of the refurbishment of an over 40 years old high-rise building. The so called “(Plus-)Plus-Energy Office High-Rise Building” offers office space for several institutes of the TU Wien. The building was planned and simulated under the premise that every office occupant uses highly energy-efficient IT-hardware which would result in an average electrical power consumption of approximately 50 Watts per office workplace. Moreover, the cooling system of the building was planned for this case, allowing only for a minimal internal thermal load. To realize the simulation results, conventional office IT-hardware needs to be substituted by energy-efficient one and all intensive computing processes, e.g. simulations, ought to be outsourced into the building’s server room. This research presents the challenges faced during the transition from a conventional scientific office setup to an energy-efficient one. The method which was used to encourage the occupants to participate in this transition process will be discussed and the impact on the building’s energy consumption will be shown.

Energy-Efficient Design of Super High-Rise Building in Hot Summer and Cold Winter Zone

2013 ◽  
Vol 361-363 ◽  
pp. 408-413
Author(s):  
Wan Ying Qu
Keyword(s):  
Energy Efficient ◽  
Natural Ventilation ◽  
Building Envelope ◽  
Living Environment ◽  
Land Resource ◽  
Efficient Design ◽  
Cold Winter ◽  
High Rise ◽  
High Rise Building ◽  
Energy Efficient Design

With advances in technology and development, it has become very important to raise the citys land resource utilization. Super high-rise building is not only save the land, but also destruct the living environment. According to the climatic characteristics and geographical position of Hot Summer and Cold Winter, present situation of energy-saving in super high-rise buildings, this paper analyses energy-efficient design strategy of super high-rise building from natural ventilation, and energy efficiency of building envelope and renewable green space.

Optical properties of traditional clay tiles for ventilated roofs and implication on roof thermal performance

2018 ◽  
Vol 42 (4) ◽  
pp. 484-505 ◽  
Author(s):  
Elisa Di Giuseppe ◽  
Simona Sabbatini ◽  
Nikita Cozzolino ◽  
Pierluigi Stipa ◽  
Marco D’Orazio
Keyword(s):  
Optical Properties ◽  
Thermal Performance ◽  
Temperate Climate ◽  
Second Phase ◽  
Analysis Tool ◽  
Urban Heat ◽  
Indoor Comfort ◽  
The Impact ◽  
Clay Tiles ◽  
Warm Temperate

A remarkable advantage of clay tiles roof coverings in hot climates is the realization of a ventilated air layer between them and the roofing underlay that allows a natural and forced convection through the tiles joints and the channel from eaves to ridge, thus cooling the roof materials. However recently, in many countries, regulatory developments on buildings energy efficiency or buildings sustainability certification protocols are increasingly encouraging the use of alternative strategies, with the aim of reducing the urban heat island (UHI) effect and the buildings’ cooling consumptions. Among them, the use of ‘cool’ materials for roof covering. These mandatory or voluntary measures de facto push the construction products market towards specific directions, risking penalizing traditional components such as clay tiles. This article reports the results of experimental and numerical activities carried out in order to extensively characterize the optical properties of clay tile materials and investigate their impact, also coupled with above sheathing ventilation, on the thermal performance of a ventilated roof under warm-temperate climate. In the first phase of the research, the main optical properties of over 30 different clay products have been experimentally characterized in order to get a clear and extensive picture of such properties for the materials spread in the market. In a second phase, starting from the thermal data collected on an experimental real-scale building, a dynamic energy analysis tool was calibrated and used to perform simulations by varying the optical properties of the roof covering thus assessing the impact on the roof temperatures, also in comparison to a clay tiles roof. The results underline that the use of the above sheathing ventilation obtained through clay tiles is an effective strategy to reduce roof temperatures, even if covering materials are not qualified as ‘cool’, thus impacting on both UHI and indoor comfort.

The Sustainable Development of Ecological High-Rise Building Design

2011 ◽  
Vol 71-78 ◽  
pp. 465-469
Author(s):  
Bai Tao Mao
Keyword(s):  
Building Design ◽  
The Sustainable Development ◽  
High Rise ◽  
High Rise Building ◽  
The Social ◽  
Special Symbol ◽  
Symbolic Value ◽  
The Moment ◽  
The Impact ◽  
The City

A city high-rise building of the environmental balance, and its prominent position in the image and the place has a special symbol. However, high-rise buildings developed to reduce the symbolic value that it has attributed to the relevant system of architectural forms. As more and more dense urban high-rise buildings stand, we should be carefully evaluated: its ecological evvironment, will be the effect? Because of its height and volume, a high-rise building than in the top or bottom is likely in terms of physical environment on the social environment and the impact is much greater. Disturb the existing high-rise buildings in varying degrees between the various functions of the city, increasing the city high-rise buildings in the moment, how to properly control the rapid of high-rise buildings in order to maintain a sustainable ecosystem, is a question worth considering.

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