scholarly journals Increasing efficiency with biomimetic approach in thermoregulative building envelope strategies supporting internal thermal comfort

2020 ◽  
Vol 10 (2) ◽  
pp. 75-83
Author(s):  
Banu Çiçek Avcıoğlu ◽  
Hüdayim Başak
Keyword(s):  
Solar Energy ◽  
Thermal Comfort ◽  
Renewable Energy Sources ◽  
Sustainable Use ◽  
Electrical Energy ◽  
Building Envelope ◽  
Building Envelopes ◽  
Use Of Resources ◽  
Passive Strategies ◽  
Biomimetic Approach

There has been a plea for sustainable use of resources since  the twentieth century. Buildings are known to consume forty percent of the world’s resources. Resources such as gas, oil, coal and electrical energy used in heating, cooling and ventilation of buildings are limited, as well as causing air pollution and climate change. For this reason, the energy resources used in the buildings should be used effectively, considering environmental concerns. The aim of this study is to describe the shift in efficient use of energy in buildings using a biomimetic approach in thermoregulative building envelope strategies that support internal thermal comfort. In this study, passive systems integrated into buildings which use solar energy, one of the renewable energy sources for heating, cooling and ventilation purposes have been examined. The methods followed by nature in using solar energy are discussed with the biomimetic approach and suggestions have been made to support the increase of energy efficiency by applying the obtained teachings to passive building envelopes.   Keywords: biomimetics; building envelope; kinetic building envelope; passive strategies; Thermal comfort

USE OF PHOTOELECTRIC MODULES WITH DOUBLE-SIDED RECEIVING SURFACE FOR SMALL GENERATION UNITS

2021 ◽  
pp. 93-100
Author(s):  
V. V. Kuvshinov ◽  
E. A. Bekirov ◽  
E. V. Guseva
Keyword(s):  
Solar Cells ◽  
Energy Storage ◽  
Solar Energy ◽  
Power Plants ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Experimental Studies ◽  
Electrical Energy ◽  
Photovoltaic Systems ◽  
Energy Storage Systems

In the presented work, the possibility of using photovoltaic silicon panels with a double-sided arrangement of solar cells on the front and back sides is presented. With a lack of space for placing solar panels, these types of modules can significantly increase the generation of electrical energy. Equipping photovoltaic systems with rechargeable batteries contributes to a more rational consumption of electrical energy, while energy storage systems significantly increase the efficiency of solar generating systems. The proposed designs are intended to increase the power characteristics of solar energy converters in the winter months, in the presence of snow or when using reflective surfaces on road surfaces. The results of the experimental studies have shown a significant efficiency of the proposed designs, as well as an increase in the total generation of electrical energy. With the development of the global technical potential and a significant increase in the production of power plants for solar energy, a new opportunity has emerged to use combined solar plants for photovoltaic conversion of the flux of incident solar radiation. At the Department of Renewable Energy Sources and Electrical Systems and Networks at Sevastopol State University, at the site of the Institute of Nuclear Energy and Industry, a photovoltaic installation was developed and studied, consisting of two side silicon solar cells and energy storage systems. The article presents the results of experimental and theoretical studies, presents diagrams, drawings and graphs of various characteristics of the FSM-110D photovoltaic panel and storage batteries. The research results show the increased efficiency of the proposed installation, as well as a good possibility of using the presented photovoltaic systems to provide them with autonomous and individual consumers living in the Crimean region and the city of Sevastopol.

scholarly journals An Augmented Virtuality Based Solar Energy Power Calculator in Electrical Engineering

2015 ◽  
Vol 5 (1) ◽  
pp. 4 ◽  
Author(s):  
Clement Ehimika Ohireime Onime ◽  
James Uhomoibhi ◽  
Ermanno Pietrosemoli
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Photovoltaic Panel ◽  
Augmented Virtuality ◽  
Hands On ◽  
Electrical Engineers ◽  
The Cost

It is becoming increasingly important to include information about power generation from renewable energy sources in the training of electrical engineers. Solar energy is arguably the most common renewable energy source in use today. Providing practical hands-on training on solar energy power generation today requires the use of photovoltaic panel devices which are used for transforming solar energy into electrical energy. In many developing countries, practical hands-on training on solar power generation is limited due to the cost of photovoltaic panel devices and so the training consists of theoretical and tutorial classes sometimes supported by remote and virtual laboratories. This paper presents an augmented virtuality tool where real-time information from a mobile device’s sensors is used directly within a virtual or computer generated environment. The tool provides a practical context for hands-on tutorial exercises on solar energy power generation.

scholarly journals A Study on the Application of Solar Panel Technology in Low-Income Residential Housing in Deli Serdang Regency

2021 ◽  
Vol 5 (3) ◽  
pp. 398-411
Author(s):  
Dicky Andrea Sembiring ◽  
Ahmad Mansuri ◽  
Ferry Rahmat Astianta Bukit ◽  
Malinda Sari Sembiring
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Low Income ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Subsidized Housing ◽  
Solar Irradiation ◽  
Total Energy Consumption ◽  
Fossil Energy

The need for energy use, especially electrical energy continues to increase from year to year. One of the sectors that consume the largest electrical energy is the household sector which consumes about 27% of the total energy consumption of all sectors. The main energy source in Indonesia at this time still comes from fossil energy, although the government has tried to develop various renewable energy sources for the future. Solar energy is one of the renewable energies that is quite potential for Indonesia considering the level of solar radiation in Indonesia is quite high throughout the year. The selection of subsidized housing as the object of research is due to the existence of clear regulations and the number which also continues to increase every year. Through the collection of physical data on the research location, such as analysis of shadows, roof structure, solar irradiation data, average electric power usage, the average solar energy requirement of the subsidized housing will be obtained. Furthermore, by calculating the economic value, it will be obtained how the description of the possibility of applying solar energy to subsidized housing will be obtained. If possible, the application of solar energy in subsidized housing can help government programs to use renewable energy and reduce the use of fossil energy

scholarly journals Optimization of building envelopes using indigenous materials to achieve thermal comfort and affordable housing in Abuja, Nigeria

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Olumide Ebenezer Jegede ◽  
Ahmad Taki
Keyword(s):  
Thermal Comfort ◽  
Affordable Housing ◽  
Residential Building ◽  
Building Envelope ◽  
Base Case ◽  
Building Envelopes ◽  
Content Type ◽  
Simulation Results ◽  
Indigenous Materials ◽  
Tropical Climates

PurposeThis paper aims to demonstrate the optimization of an existing residential building in a tropical climate using indigenous materials as an alternative to conventional building envelopes to achieve thermal comfort and affordable housing.Design/methodology/approachThis study mainly adopted a quantitative research methodology through a comprehensive simulation study on a selected prototype building. The energy plus simulation tool in DesignBuilder was used to predict the average monthly and annual thermal comfort of a typical residential building in the study area. Also, a cost analysis of the final optimization interventions was conducted to estimate the construction cost savings.FindingsThe comparative analysis of simulation results for the base-case and optimized models indicates potential advantages in replacing conventional building envelope materials with indigenous materials. The base-case simulation results showed that the annual operative temperature is more than the adaptive thermal comfort set points in tropical climates, by 8.26%. This often leads to interventions using mechanical cooling systems, thus triggering overconsumption of energy and increase in CO2 emissions. The building envelope materials for floor, walls and roof were replaced with low U-values indigenous materials until considerable results in terms of thermal comfort and overall building construction cost were achieved. The final simulation results showed that using indigenous materials for the ground floor, external walls and roof could substantially reduce the annual operative temperature by 8%, thereby increasing the predicted three months of thermal comfort in the base-case to nine months annually. Likewise, there was a 32.31%, 35.78% and 41.81% reduction in the annual CO2 emissions, cooling loads and construction costs, respectively.Originality/valueThe knowledge of indigenous materials as an alternative to conventional materials for sustainable buildings is not new. However, most of the available research is focused on achieving affordable housing. There is a dearth of research showing the extent that these indigenous materials can be used to improve indoor thermal comfort in developing countries with tropical climates such as Nigeria.

scholarly journals Performance Study of a Multi-Objective Mathematical Programming Modeling Approach for Energy Optimization in Building Envelopes

2017 ◽  
Vol 14 (1) ◽  
Keyword(s):  
Thermal Comfort ◽  
Climatic Factors ◽  
Model Simulation ◽  
Energy Optimization ◽  
Building Design ◽  
Building Envelope ◽  
Performance Study ◽  
Building Envelopes ◽  
Design Elements ◽  
Shading Devices

Architecture is very responsive to the environmental and climatic factors which affect the built environment with unsteady state. Technology can be used to keep these factors under control by optimizing building design to fit with the surrounding environment and the energy needs. In addition, building envelopes play a major role in achieving thermal comfort for occupants and reducing energy consumption. Building envelopes energy optimization became a leading approach in the architectural research and implementation. This study hypothesizes that using solar shading devices with suitable design decisions of the fenestration affects the daylight level, solar heat gain, visual comfort, and thermal comfort for users. The main objective of this study is to examine the relationships between building envelope design and building energy efficiency through research and simulations. In addition, it explores which combinations of the design elements are the most efficient in terms of lighting and HVAC loads which gives the designers a variety of optimum design solutions to choose the architectural from. This research focuses on the implementation and effectiveness of shading devices, glass type, and window-wall ratio (WWR) in energy optimization through building envelope. The study used MATLAB software for the mathematical model simulation while Revit software was used for the model validation. The study found that south orientation for buildings associated with horizontal shading elements is the best solution in terms of cooling loads in summer. In winter, however, the optimal solution was south orientation with vertical shading elements in terms of heating loads and illuminance levels.

scholarly journals Estimated View of Renewable Resources as a Sustainable Electrical Energy Source, Case Study

Designs ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 32
Author(s):  
Heyam Al-Najjar ◽  
Christoph Pfeifer ◽  
Rafat Al Afif ◽  
Hala J. El-Khozondar
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Gaza Strip ◽  
Renewable Energy Sources ◽  
Software Tool ◽  
Electrical Energy ◽  
Evaluation Methodology ◽  
Renewable Energy Resources ◽  
Energy Potential ◽  
Coastal Waves

Renewable energy resources for energy generation in the Gaza Strip (GS) emerge as a complementary resource, not only to meet the need of society for energy in various forms, but also to find available, sustainably, and less costly resources for institutions as with individuals. These resources could provide safety in use, increase energy security, and address environmental concerns. This work aimed to assess the renewable energy potential in the GS, which has few natural resources and a real crisis in energy supply. Therefore, an integrated evaluation methodology is assumed for renewable energy potential; the methodology comprises mathematical as well as software programming to assess the renewable energy. The results reveal the assessment of the existing four renewable energy sources: solar, wind, wave, and biomass. The estimations exhibit that the solar and biomass resources are dominant. The methodology consists of mathematical models for calculating the energy outputs from different resources in the study area. ArcGIS 10.1 software used for calculating solar radiation, WindSim 9.0.0 software for estimating wind energy and OpenWEC software tool for evaluating the force stored in coastal waves. The potential of each energy and the integration of all are depicted in individual maps by ArcGIS. It was found that if anaerobic digestion technology is applied, 65.15 MW electric power could be produced from about one-and a third million tons/year of biomass. Depending on the available statistical data due to the specified annual time period and the household electric demand that is about 120 MW at the corresponding time, this means that the energy from biomass can cover more than half of the demand. In addition, solar energy potentials were estimated to reach 1195 GWh/year. Therefore, the existing power may be replaced by biomass and solar energy. It also demonstrates that the energy potential maps can be used as metrics for possible sustainability projects in the GS.

scholarly journals An Experimental Study on the Energy and Exergy Performance of an Air-Type PVT Collector with Perforated Baffle

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2919
Author(s):  
Jin-Hee Kim ◽  
Ji-Suk Yu ◽  
Jun-Tae Kim
Keyword(s):  
Solar Energy ◽  
Total Energy ◽  
Second Law Of Thermodynamics ◽  
Electrical Energy ◽  
Building Envelope ◽  
Photovoltaic System ◽  
Pv Module ◽  
Energy And Exergy ◽  
Perforated Baffle ◽  
Exergy Performance

BIPV (Building Integrated Photovoltaic) system is a building envelope technology that generates energy by converting solar energy into electricity. However, after producing electrical energy, the remaining solar energy is transferred as heat, raising the temperature at the rear of the BIPV module, and reducing electrical efficiency. On the other hand, a PVT (Photovoltaic Thermal) collector is a device that generates electricity from a PV module and at the same time uses the heat transferred to the air layer inside the collector. In general, the performance of air-type PVT collectors is based on energy analysis using the first law of thermodynamics. Since this performance does not take into account the loss amount, it is not the actual amount of power generation and preheat of the collector that can be used. Therefore, an exergy analysis based on the second law of thermodynamics considering the amount of energy loss must be performed. In this paper, an air-type PVT collector to which perforated baffles were applied was tested through outdoor experiments based on ISO 9806 standard. The total energy (thermal and electrical characteristics) and exergy according to the flow rate (100, 150, and 200 m3/h), solar radiation, and rear temperature of the PV module of the air-type PVT collector were analyzed. As a result, the total exergy efficiency of the air-type PVT collector with perforated baffles was 24.8–30.5% when the total energy efficiency was 44.1–63.3%.

scholarly journals Phase Change Material Integration in Building Envelopes in Different Building Types and Climates: Modeling the Benefits of Active and Passive Strategies

2021 ◽  
Vol 11 (10) ◽  
pp. 4680
Author(s):  
Francesco Carlucci ◽  
Alessandro Cannavale ◽  
Angela Alessia Triggiano ◽  
Amalia Squicciarini ◽  
Francesco Fiorito
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Heat Storage ◽  
Building Envelope ◽  
Latent Heat Storage ◽  
Climatic Zones ◽  
Building Envelopes ◽  
Indoor Thermal Comfort ◽  
Passive Strategies ◽  
Change Material

Among the adaptive solutions, phase change material (PCM) technology is one of the most developed, thanks to its capability to mitigate the effects of air temperature fluctuations using thermal energy storage (TES). PCMs belong to the category of passive systems that operate on heat modulation, thanks to latent heat storage (LHS) that can lead to a reduction of heating ventilation air conditioning (HVAC) consumption in traditional buildings and to an improvement of indoor thermal comfort in buildings devoid of HVAC systems. The aim of this work is to numerically analyze and compare the benefits of the implementation of PCMs on the building envelope in both active and passive strategies. To generalize the results, two different EnergyPlus calibrated reference models—the small office and the midrise apartment—were considered, and 25 different European cities in different climatic zones were selected. For these analyses, a PCM plasterboard with a 23 °C melting point was considered in four different thicknesses—12.5, 25, 37.5, and 50 mm. The results obtained highlighted a strong logarithmic correlation between PCM thickness and energy reduction in all the climatic zones, with higher benefits in office buildings and in warmer climates for both strategies.

scholarly journals Sosialisasi Pemanfaatan Tenaga Surya Sebagai Sumber Energi Listrik Di Desa Ciherang Pondok, Kabupaten Bogor

TERANG ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 109-116
Author(s):  
Arief Suardi Nur Chairat
Keyword(s):  
Solar Energy ◽  
Environmental Sustainability ◽  
Rural Areas ◽  
Local Community ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
General Information ◽  
Lecture Method ◽  
The Village

One of the obstacles faced in providing electricity in rural areas is renewable energy sources, especially solar energy, which potentially in all rural areas also require inexpensive costs plus a lack of knowledge about these technologies. With a variety of goodness that exists in solar energy, counseling or socialization must be given about its utilization. Ciherang Pondok Village is located on a plateau in the area of ​​Caringin District, Bogor Regency. The village is located at a strategic point, so it has enough light intensity to utilize solar power as a source of electrical energy. Extension activities are carried out by the lecture method to convey various general information about the use of solar power as a solution to the problem of electrical energy in the countryside. As a result, the knowledge of the local community increases and can apply directly independently how to use solar energy to be used as a source of electrical energy so that the availability of energy and people's access to energy are guaranteed at affordable prices in the long term while paying attention to environmental sustainability.

scholarly journals Different Converter Topologies for Solar Photovoltaic System with methods for Maximum Power Point Tracking Algorithms

2019 ◽  
Vol 8 (11) ◽  
pp. 1112-1118
Keyword(s):  
Solar System ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Industrial Applications ◽  
Photovoltaic System ◽  
Point Tracking ◽  
Tracking Algorithms ◽  
Converter Topologies ◽  
Solar Photovoltaic System

Renewable energy sources are becoming important for the production of electricity used in residential, commercial and industrial applications. These resources include nonconventional sources like solar, wind, hydro, biogas, tidal and biomass. All these are contributing in the production of electrical energy and also help in reducing the pollution by reducing the green gas emissions which were one of the reasons to reduce the use of conventional sources. Out of all of the above, the source which is gaining an importance and maximum usage is a solar energy. The reason behind its extensive use is it is freely available, abundant, non-pollutingin nature and its conversion without involving any rotating device. Combining the two systems increases the performance and efficiency of a particular system. Hence to improve its performance and use by two-fold, a solar system can be integrated with thermal, hydro or wind power system. Also, a suitable converter topology will be used along with an appropriate control algorithm. Solar energy changes as per irradiance and temperature in a day also one factor which reduces the power output is the partial shedding in cells. This will alleviate the conversion efficiency of solar system (About 20%). Many conventional and advanced algorithms are used for getting the optimum output from a solar system. Now days to get optimum energy from a solar system, soft computing algorithms are used in a system which are called as operating point tracking algorithms. This paper intended to emphasize on converter topologies and a brief introduction of MPPT algorithms

Sign in / Sign up

Export Citation Format

Share Document