An energy harvesting system utilizing wind pressure fluctuations on high-rise building envelope

2017 ◽  
Author(s):  
Jae-Chan Park ◽  
In-Ho Kim ◽  
Seon-Jun Jang ◽  
Hyung-Jo Jung
Keyword(s):  
Energy Harvesting ◽  
Pressure Fluctuations ◽  
Building Envelope ◽  
Wind Pressure ◽  
High Rise ◽  
High Rise Building ◽  
Energy Harvesting System

scholarly journals Wind tunnel tests of aerodynamic interference of the high-rise building and its nearest city surroundings

2013 ◽  
Vol 12 (2) ◽  
pp. 079-086
Author(s):  
Grzegorz Bosak
Keyword(s):  
Wind Tunnel ◽  
Building Design ◽  
Wind Pressure ◽  
Horizontal Wind ◽  
Wind Tunnel Tests ◽  
Wind Action ◽  
Building Model ◽  
High Rise ◽  
High Rise Building ◽  
Aerodynamic Interference

The paper summarizes the results of wind tunnel tests of the influence of aerodynamic interference on wind action of a high-rise building design in Warsaw. Measurements were accomplished in Wind Engineering Laboratory of Cracow University of Technology. Wind pressures on external surfaces of the building model were acquired in two different situations. Firstly, only the building model was placed in the tunnel working section, secondly, the building model with the nearest surroundings was taken under consideration. A study of the character of wind action differences caused by the nearest surroundings of the building was the main aim of the paper. Wind pressure coefficients on the external building surfaces and the difference of horizontal wind action on full scale were compared.

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 Feasibility Study of Fluctuating Wind Pressure around High-Rise Buildings as a Potential Energy-Harvesting Source

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4032 ◽  
Author(s):  
Park ◽  
Kim ◽  
Jung
Keyword(s):  
Energy Source ◽  
Energy Harvesting ◽  
Wind Turbine ◽  
Wind Pressure ◽  
Experimental Conditions ◽  
Energy Harvesters ◽  
High Rise ◽  
New Locations ◽  
Noise Vibration ◽  
Fluctuating Wind

As the importance of sustainable energy increases, wind power generation systems utilizing wind energy around high-rise buildings are being developed. However, in existing wind turbine systems, it is necessary to solve noise, vibration problems, and structural issues for the installation of large-sized systems. In addition, small wind turbine systems can be installed only in limited areas such as roofs and corners, because their efficiency is limited to high and stable wind speed. For this reason, the distribution of fluctuating wind pressure around high-rise buildings was analyzed, and its feasibility as an energy source was evaluated, reflecting that fluctuating wind pressure can be used in vibration-based energy-harvesters. To achieve this, firstly, experimental conditions and theories were established to check the characteristic of wind pressure around high-rise buildings. The experiment was divided into the environment without surrounding buildings and the urban environment. Next, the pressure distribution around high-rise buildings and the quantitative results obtained from the experiment were determined. Finally, based on the results obtained from the experiments, the feasibility of fluctuating wind pressure as an energy-harvesting source was analyzed. From this study, it was found that fluctuating wind pressure can be used as a new energy source at new locations of high-rise buildings that were not utilized previously.

scholarly journals Study of Wind Loads and Wind Speed Amplifications on High-Rise Building with Opening by Numerical Simulation and Wind Tunnel Test

2020 ◽  
Vol 2020 ◽  
pp. 1-24
Author(s):  
Fu-Bin Chen ◽  
Xiao-Lu Wang ◽  
Yun Zhao ◽  
Yuan-Bo Li ◽  
Qiu-Sheng Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Wind Speed ◽  
Wind Tunnel ◽  
Wind Pressure ◽  
Wind Loads ◽  
Structural Safety ◽  
Pressure Coefficients ◽  
High Rise ◽  
High Rise Building ◽  
The Mean

High-rise buildings are very sensitive to wind excitations, and wind-induced responses have always been the key factors for structural design. Facade openings have often been used as aerodynamic measures for wind-resistant design of high-rise buildings to meet the requirement of structural safety and comfort. Obvious wind speed amplifications can also be observed inside the openings. Therefore, implementing wind turbines in the openings is of great importance for the utilization of abundant wind energy resources in high-rise buildings and the development of green buildings. Based on numerical simulation and wind tunnel testing, the wind loads and wind speed amplifications on high-rise buildings with openings are investigated in detail. The three-dimensional numerical simulation for wind effects on high-rise building with openings was firstly carried out on FLUENT 15.0 platform by SST k − ε model. The mean wind pressure coefficients and the wind flow characteristics were obtained. The wind speed amplifications at the opening were analyzed, and the distribution law of wind speed in the openings is presented. Meanwhile, a series of wind tunnel tests were conducted to assess the mean and fluctuating wind pressure coefficients in high-rise building models with various opening rates. The variation of wind pressure distribution at typical measuring layers with wind direction was analyzed. Finally, the wind speed amplifications in the openings were studied and verified by the numerical simulation results.

Static Analysis of Wind Energy Building under the Action of Equivalent Wind Load

2011 ◽  
Vol 94-96 ◽  
pp. 1569-1572 ◽  
Author(s):  
Xiao Jun Guan ◽  
Guo Ping Chen ◽  
Ying Yang
Keyword(s):  
Wind Energy ◽  
Static Analysis ◽  
Wind Pressure ◽  
Building Structure ◽  
Dead Load ◽  
High Rise ◽  
High Rise Building ◽  
New Energy ◽  
Load Action ◽  
Environmental Requirements

In the recent years, people begin to concern more about the development of new energy source, because of the global economic development and more stringent environmental requirements. The wind power is rapidly developed for its low price and it’s friendly to environment and the wind energy and building integration also becomes a very important mode to develop new energy sources. The wind driven generator and high-rise building structure were integrated, and ANSYS was used to complete the static analysis of the equivalent dead load action of high-rise building with wind driven generator under six different wind pressure. By comparing the results of the calculations, the feasibility of the wind energy and building integration was initially verified.

scholarly journals Analysis of technical solutions of stacks in high-rise buildings

2021 ◽  
Vol 1209 (1) ◽  
pp. 012006
Author(s):  
M Sokol ◽  
J Peráčková
Keyword(s):  
Structural Design ◽  
Pressure Fluctuations ◽  
High Rise ◽  
High Rise Building ◽  
Foul Water ◽  
Protection Systems ◽  
Technical Solutions ◽  
Unpleasant Smell ◽  
Suitable System

Abstract Nowadays, due to the maximum use of building lands, high-rise buildings in the cities are coming to the forefront of construction. A high-rise building is a building that, due to its height, requires a different technical, technological and structural design. Due to the increasing floors of buildings, more and more demands are placed on sanitary installations in terms of hygiene and quality of distribution. With the drainage in a high-rise building, the biggest problem arises in the design of stacks, which must be given individual attention. Foul water stacks must be designed in such a way that the overpressure and negative pressure created in them do not cause the extraction of water from traps and thus the spread of unpleasant smell in the building. Fluctuations in the pressure in stacks are influenced by many other factors, such as the method of venting of the stack, the fitting used on the stack, or the transition of the stack to the drain. When dimensioning stacks in addition to the correct design, it is also necessary to use a suitable system, which significantly affects the investment costs. A properly chosen system can save a lot of money that could arise from excessive dimensions, unnecessary fire protection systems, or anchorages. The paper deals with a theoretical analysis of modern technical solutions that positively affect pressure fluctuations in waste water pipes in high-rise buildings.

scholarly journals Analysis of Wind Effect on High-Rise Building for Different Terrain Category

2017 ◽  
Vol 2 (12) ◽  
pp. 23
Author(s):  
Chinedum Vincent Okafor ◽  
Kevin Chucks Okolie ◽  
Mbanusi Echefuna Cyril ◽  
Chinenye Pamela Okafor
Keyword(s):  
Wind Speed ◽  
Wind Pressure ◽  
Wind Effect ◽  
Element Analysis ◽  
Nodal Displacement ◽  
Building Model ◽  
High Rise ◽  
High Rise Building ◽  
Profile Equation ◽  
Terrain Category

This paper analyzed the effect of wind loadings on high-rise building for different terrain categories. The wind speed and design wind pressure for the different terrain categories adopted for this study were calculated as per logarithmic wind profile equation and BS6399-2:1997 respectively. Also, the nodal displacement of a 3D high-rise building model with reference to the calculated design wind loads were performed using finite element analysis software(STADDPROV8I). From the result obtained, it was shown that Terrain category IV when compared to other terrain categories recorded lower wind speed and pressure from the ground to a height of about 10m. The writers also observed that at greater terrain category(TC4), the wind speed and pressure tends to be much higher at the top floors(10m-48m) of the high-rise building whereas, terrain categories (TC3, TC2, TC1) recorded lower wind speed and pressure at that same height(10m-48m). this disparity however was discovered to be due to a phenomenon known as gust effect. Also, the nodal displacement for the different terrain category (TC4, TC3, TC2 and TC1) on each floor of the high-rise building increased uniformly in respective pattern as the height of the 3D model increases.  In conclusion, the authors therefore remark “the greater the terrain category, the lowest is the wind speed in the roughness sub layer and the longer height it takes to reach gradient wind speed”.

scholarly journals CFD and Experimental Study of Wind Pressure Distribution on the High-Rise Building in the Shape of an Equilateral Acute Triangle

Fluids ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 81
Author(s):  
Norbert Jendzelovsky ◽  
Roland Antal
Keyword(s):  
Pressure Coefficient ◽  
Wind Pressure ◽  
National Standard ◽  
Wind Effect ◽  
Wind Flow ◽  
The European Union ◽  
Scaled Model ◽  
Effect Analysis ◽  
High Rise ◽  
High Rise Building

There is a lack of detailed information about wind flow and distribution of wind pressure around atypically shaped high-rise buildings. The national standard EN 1991-1-4 Eurocode 1 used to determine the effects of wind on the territory of Slovakia (and indeed other countries of the European Union) does not have a procedure for determining the effects of wind on objects of triangular shape. This presents a problem for designers and engineers, as there exist no generally binding/valid rules to follow when performing the wind effect analysis. This paper shows the procedure of identification and results of the external wind pressure coefficient for the triangularly shaped high-rise building. Two methods of calculation have been chosen for this purpose. First, experimental measurements were performed on a scaled model of the building cross-section in the wind tunnel. Subsequently, software simulations were performed on the same scaled model in the CFD (computational fluid dynamics) program ANSYS CFX. Results of wind pressure were obtained for two directions of wind flow measured in 16 sampling points distributed irregularly around the circumference of the model. Results were mutually compared and verified. At the end, the wind flow effects on a real-size triangular high-rise building in the built-up area performed by software simulation are shown.

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