An Approach to the Design of Photovoltaic Noise Barriers and a Case Study From Istanbul, Turkey

2021 ◽  
Author(s):  
ferhan hasmaden ◽  
Gülay Zorer Gedik ◽  
Neşe Yüğrük Akdağ
Keyword(s):  
Solar Energy ◽  
Electricity Generation ◽  
Noise Control ◽  
Heavy Traffic ◽  
Integrated Design ◽  
Energy Generation ◽  
Control Measures ◽  
Noise Barriers ◽  
Noise Barrier

Abstract Solar energy solutions that do not require additional space are critical. Noise barriers, which are built in low-value lands next to noise sources, provide effective areas for PV modules. There are many studies on using noise barriers as a sub-structure for photovoltaic systems, providing electricity generation besides noise reduction targets. Photovoltaic Noise Barrier (PVNB) technology combines noise control measures with renewable energy generation. In this study, it is aimed to develop an integrated design method that embeds solar energy technology in noise protection structures. The method is exemplified in an existing settlement located on the side of the road with heavy traffic. According to local climate and solar data, optimum tilt angles have been determined for annual, semi-annual, seasonal, and monthly periods. Noise barrier alternatives are derived with combinations of different diffraction edge sizes of barrier top and determined optimum inclination angles. The performance of the criteria that affect the PVNB effectiveness for alternatives was calculated through software tools. The energy generation potential of PVNB and its shading in adjacent blocks were calculated with PVsyst 6.7.7. The noise control efficiency of the structure was computed via SoundPLAN 7.2. TOPSIS method one of the most common multi-criteria decision-making technique (MCDM) was used in the evaluation. As a result of TOPSIS, the best PVNB solution in the case study is the alternative that has 3m and 2m wide edges; 58 ° and 31 ° tilted edges. Comparison with the current situation, the selected alternative will decrease %44 the number of receiving points affected by noise and provide 524804 kWh annual electricity generation.

Forecasting of total daily solar energy generation using ARIMA: A case study

2019 ◽  
Author(s):  
Sharif Atique ◽  
Subrina Noureen ◽  
Vishwajit Roy ◽  
Vinitha Subburaj ◽  
Stephen Bayne ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Generation

scholarly journals Suitability of Active Noise Barriers for Construction Sites

2020 ◽  
Vol 10 (18) ◽  
pp. 6160
Author(s):  
Shahin Sohrabi ◽  
Teresa Pàmies Gómez ◽  
Jordi Romeu Garbí
Keyword(s):  
Noise Control ◽  
Noise Source ◽  
Active Noise Control ◽  
Target Area ◽  
Construction Sites ◽  
Noise Barriers ◽  
Active Noise ◽  
Noise Barrier ◽  
Passive Noise ◽  
Suitable Location

Barriers are increasingly used to protect the pedestrian and neighboring buildings from construction noise activities. This study aims to investigate the suitability of applying active noise control on barriers in a construction site to protect the street area and neighboring buildings. Transducers that are simulated in this work are close to the barrier, and their optimal positions are defined in such a way that the control system has the maximum performance at the neighboring areas close to the construction sites. To begin with, the suitable location of the control sources is found when the total squared pressure is minimized at the positions of noise receivers. The suitable location of the error sensors is, then, found when the control sources are fixed at the position of the previous step and the total squared pressure is minimized at the error sensors. The best location for the error sensors is defined when the maximum reduction is achieved in the target area. It is observed that suitable positions for the transducers depend on the location of target areas for noise control, the position of the noise source, and its operating frequency. In this investigation, a unique configuration is proposed for the transducers that achieves a comparable reduction both at the street area and the neighboring buildings, simultaneously. The results show that the active noise barrier with a height of 2.5 m can achieve an extra insertion loss in the street zone, varies from 9.3 to 16.4 dB (in comparison with passive noise barrier) when the distance of the noise source from the barrier changes in the range of 7 to 1 m, respectively. Those values are of the same order for the passive noise attenuation. Furthermore, similar results are achieved when attempting to cancel the shadow zone of a façade 15 m away from the barrier.

Case Study in Public Perception of Noise Barrier Effectiveness

1998 ◽  
Vol 1626 (1) ◽  
pp. 67-70
Author(s):  
Kenneth D. Polcak ◽  
Andy Smith
Keyword(s):  
Public Perception ◽  
Precast Concrete ◽  
Type I ◽  
Noise Levels ◽  
Noise Barriers ◽  
Vehicle Noise ◽  
The Us ◽  
Noise Barrier ◽  
Over The Top

I-97 and US-50 are the two major limited-access highways that connect Washington, D.C., and Baltimore to Annapolis (Maryland’s state capital). Three communities situated along US-50 and at the interchange with I-97 were considered for Type I noise barriers as the result of proposed widening and ramp additions to the highway network. Ultimately, precast concrete noise barriers were constructed in five sections on both sides of the highway in the area. Located just west of the US-50/I-97 interchange is the retirement community of Heritage Harbour. During development and construction of the community in the early and mid-1980s, the developer constructed two noncontiguous earth berms adjacent to but outside the highway right-of-way line. The noise barrier design concept developed for this project incorporated these existing earth berms into the overall US-50/I-97 barrier system. Barrier wall sections were designed to tie into both ends of the berms to mitigate flanking noise and ultimately to provide a “closed system” for the adjacent communities. STAMINA 2.0/OPTIMA modeling identified that the noise barrier construction would provide an additional 3- to 7-dBA insertion loss for homes situated near the berms. After construction of the US-50/I-97 noise barrier system, community members living directly behind the berms claimed that the new barrier walls were “funneling” noise over the top of the berms and causing the noise to be louder than it was before the barrier was constructed. The Maryland State Highway Administration monitored postbarrier noise levels in response to the community’s request. The monitored levels confirmed OPTIMA predicted noise levels and did not support claims that noise levels had become worse after barrier construction. Under prebarrier conditions, it was hypothesized that noise particularly from heavy vehicles unshielded by the existing berms was substantial enough that vehicle noise passing over the berms was being masked, so that the source direction was not always discernible. Once the “flanking noise” was abated by the barrier walls, vehicle noise passing over the berms dominated. The results of the noise monitoring and an explanation of identified phenomenon were successfully presented to the community. The case study presents the US-50/I-97 berm/barrier public perception issues, discusses the project’s applicability to previous “public noise perception” research, and suggests public involvement techniques that could prepare communities for unique acoustic situations.

The contribution of spatiotemporal modelling to spatial planning instruments on the local level

2021 ◽  
Author(s):  
Peter Lichtenwoehrer ◽  
Georg Neugebauer ◽  
Lore Abart-Heriszt ◽  
Franz Suppan ◽  
Gernot Stoeglehner
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Spatial Planning ◽  
Energy Supply ◽  
Energy Demand ◽  
Local Level ◽  
Energy Transition ◽  
Energy Generation ◽  
Added Value

<p>In the course of the energy transition, spatial and temporal aspects of energy demand and renewable energy supply are increasingly coming to the forefront of scientific studies and political debates. In this context, the use of spatiotemporal models has been identified as a decisive methodology for integrated spatial and energy planning. However, the transformation of spatiotemporal results into concrete spatial planning instruments has not yet been sufficiently discussed. Therefore, this research aims to provide answers by using specific results of a case study in Austria. In the case study evaluation, energy demand is considered in high spatial resolution using statistic data in 250m raster cells as a basis. The results are supplemented with an assessment of high spatio-temporal solar energy potentials. Taking these results as a basis, the following questions are addressed: How can spatial and temporal evaluations of energy demand and supply support the energy transition by means of spatial planning on the local level? What measures with respect to renewable energy generation, storage and grid capacity can be derived and which effects are expected to be achieved? With respect to renewable energy provision, initial results reveal added value for the spatial delimitation of district heating supply areas. Further, building integrated solar energy generation reveals high shares of excess energy – both thermal and electric – which has to be properly used, taking into account different sectors of energy demand. As a consequence, the results of this research also offer the opportunity to reflect on the benefits of sector coupling, as well as the new organization of energy supply via energy communities.</p>

Big Acoustics in Small Spaces - Achieving HS Auditorium Design Goals with Space Constraints

2021 ◽  
Vol 263 (4) ◽  
pp. 2126-2137
Author(s):  
Robert Tanen ◽  
Alexander M. Aquila
Keyword(s):  
High School ◽  
Noise Control ◽  
Control Measures ◽  
Design Criteria ◽  
Design Team ◽  
Reverberation Time

When designing a high school auditorium there are several factors that determine the outcome of the final construction. Prior to establishing acoustical design goals, the restrictions outlined from the design team typically start at budget and may extend to the size of the box in which the auditorium is to fit. A fluent balance between design restrictions and internal acoustical goals is critical to create a successful end-product. This case study shows the actions taken to increase the volume, provide custom diffusion, and isolate an auditorium from mechanical sources directly above the space. Furthermore, critical acoustical metrics such as loudness, spaciousness, ITDG, intimacy, reverberation time, clarity, etc., were analyzed in design and measured post construction. Results, based on ISO 3382-1 testing are provided, as are the noise control measures implemented to achieve the established set of design criteria. The overall intent of this case study presentation is to exhibit how goals across each design team discipline can be met, through sometimes unwilling compromise, ultimately producing a rewarding end-result for acousticians, architects, engineers, and ownership.

scholarly journals Noise Reduction Using Concrete Barriers: A Case Study

2021 ◽  
Vol 1197 (1) ◽  
pp. 012010
Author(s):  
A. K. Dasarathy ◽  
M. Tamil selvi
Keyword(s):  
Noise Reduction ◽  
Noise Pollution ◽  
Noise Attenuation ◽  
Noise Barriers ◽  
Innovative Design ◽  
Attenuation Effect ◽  
Traffic Conditions ◽  
Sound Barriers ◽  
Noise Barrier

Abstract Noise pollution is becoming more and more acute, and hence many researchers are studying the noise attenuation effect and prevention of noise. In this study an attempt has been made to find the reduction in noise levels at National Highway 45 near peerkankaranai in Chennai. Two sensitive places were selected along NH 45 by examining attenuation of noise by providing noise barriers in the form of concrete structures. The primary goal of this project was to identify innovative design of noise barrier that has the potential to be implemented in NH 45, Chennai. Based on the research and evaluation conducted for this study, it was recommended that two innovative barrier designs be implemented in Chennai. First, a noise prediction is made at the specified location on the highway under certain traffic conditions in order to determine the noise level by measurement and decide on the barrier requirement. The installation of sound barriers is feasible enough to cause a significant decrease in noise pollution at the roads. Considerable noise attenuation is achieved by providing concrete noise barrier. The paper provides Leq at the time of traffic data recorded was 105.1 dBA at NH45 and 91.108 dBA at NH5 during the time of observation at installation of barrier the values are 70.09 dBA 79.11 dBA, respectively. Noise reduction is possible and noise reduction is predominantly reduced by providing barrier.

Impacts of noise barriers on near-viaduct air quality in a city: A case study in Xi'an

2021 ◽  
Vol 196 ◽  
pp. 107751
Author(s):  
Bing Li ◽  
Zhaowen Qiu ◽  
Jinlong Zheng
Keyword(s):  
Air Quality ◽  
Noise Barriers

A Case Study on Experiment Site Selection for PV Energy Generation Forecast

2020 ◽  
Author(s):  
Huang Yu Hsiang ◽  
Tseng Sheng Yuan ◽  
Ping Wang ◽  
Lin Wen Hui ◽  
Lin Hsiao Chung
Keyword(s):  
Site Selection ◽  
Energy Generation ◽  
Selection For

scholarly journals Solar energy: A panacea for the electricity generation crisis in Nigeria

Heliyon ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. e07016
Author(s):  
Emmanuel.P. Agbo ◽  
Collins.O. Edet ◽  
Thomas.O. Magu ◽  
Armstrong.O. Njok ◽  
Chris.M. Ekpo ◽  
...  
Keyword(s):  
Solar Energy ◽  
Electricity Generation
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