scholarly journals PROPOSALS OF SOLUTIONS OF THE PROJECT DEVELOPMENTS OF ENERGY-EFFICIENT GEO-HOUSES IN UKRAINE

2021 ◽  
pp. 183-189
Author(s):  
Larysa Diachenko ◽  
Olha Diachenko
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Rational Design ◽  
Seismic Stability ◽  
Optimal Size ◽  
Solar Panels ◽  
Concrete Frame ◽  
Advantages And Disadvantages ◽  
Use Of Technology ◽  
Heavy Construction

One of the new approaches in civil engineering is geodetic domed houses. These are quite economical buildings that most fully reflect the idea of energy saving and the concept of environmentally friendly housing. The symmetry of the sphere allows the most efficient placement of solar panels and solar collectors. The structures of the house are assembled quickly and do not require heavy construction equipment. By reducing the volume of the heating room, we save on heat resources, so the heating of the domed house in the winter requires 20 – 30% less energy in comparison to the rectangular buildings. The purpose of the article is to offer solutions for the development of projects of energy-efficient geo-houses in Ukraine. To search for the most rational design and technological solutions; to analyze the characteristics, advantages and disadvantages of energy efficient geo-house buildings in order to build them in Ukraine. The geodesic dome is made of polyurethane foam, reinforced concrete, wood, fiberglass concrete. Frame structures of the geo-house are made of metal or timber, the "skeleton" is lined with plywood or special OSB-boards. This method provides lightness and strength of the building. The dome must have the optimal size of the ribs, not more than 2.5 m in length, which allows you to erect a frame without the use of technology, with a force of 2 ÷ 3 people. Two installation methods of the frame are considered: connector and non-connector. The proposed solutions for the development of energy-efficient geo-houses' projects in Ukraine will allow in the near future to solve the problems of ecology, energy saving, natural resources saving in the country. Energy-efficient geo-house is the best option for any region of Ukraine, thanks to the undeniable advantages: rigidity and stability of the frame, geometric symmetry of shapes and strength, energy efficiency, high seismic stability, erection speed and originality.

scholarly journals A Survey on the Evolution of Opportunistic Routing with Asynchronous Duty-Cycled MAC in Wireless Sensor Networks

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4112
Author(s):  
Ayesha Akter Lata ◽  
Moonsoo Kang
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Load Balancing ◽  
Energy Saving ◽  
Energy Efficient ◽  
Opportunistic Routing ◽  
Wireless Sensor ◽  
Mac Layer ◽  
Advantages And Disadvantages

Wireless sensor networks (WSNs) have been used for environmental monitoring and reporting for many decades. Energy consumption is a significant research topic because wireless sensor nodes are battery-operated to be highly energy-constrained. Several strategies have been introduced in routing and MAC (Medium Access Control) layer protocols to facilitate energy saving. At the routing layer, an energy-efficient routing protocol, known as opportunistic routing (OR), has been designed to improve efficiency. OR achieves energy efficiency via load-balancing, which forwards packets along multiple routes over WSNs. At the MAC layer, an energy-efficient MAC protocol known as the asynchronous duty-cycled MAC (ADCM) protocol achieves energy saving by turning on and off a sensor node’s transmitter and receiver to eliminate unnecessary energy wastage. These protocols each have their own advantages and disadvantages. OR achieves energy efficiency at the routing layer but it raises an issue at the MAC layer. ADCM achieves energy efficiency at the MAC layer, but it hinders the packet forwarding efficiency of the OR. To attain better energy efficiency, a combination of these two ideas led to the development of OR with asynchronous duty-cycled MAC (OR-ADCM). However, even with better energy efficiency, limitations still exist in combining load-balancing and duty-cycling due to conflicts in the inherent properties of OR and ADCM. In this paper, we present a survey of the evolution of OR-ADCM over WSNs to help the reader better understand and appreciate the details of this tradeoff, which we hope will lead to the development of better protocol designs.

scholarly journals Energy Saving and Renewable Energy production at University of Kashan, Kashan, Iran

2021 ◽  
Vol 1 ◽  
Author(s):  
Majid Monemzadeh ◽  
Mahnaz Talebi-Dastenaei2
Keyword(s):  
Renewable Energy ◽  
Energy Saving ◽  
Energy Efficient ◽  
Energy Production ◽  
Fossil Fuel ◽  
Energy System ◽  
The Other ◽  
Solar Panels ◽  
Renewable Energy Production ◽  
Fossil Fuel Energy

University of Kashan was founded in 1974 and is the oldest institution of higher education in Kashan. Kashan (33° 58' 59" N / 51° 25' 56" E) climate is classified as a hot and dry by the Köppen-Geiger system. This climate causes a large amount of energy consumption for University at springs and summers. On the other hand, it means that sun is shining strongly for more than 6 months and University of Kashan has been working on some solutions to use solar energy and decrease dependency on the old fossil-fuel energy system. The current paper studies some of the main activities of University of Kashan on Energy Saving and Renewable Energy Production programs such as CCHP plant (The first Combined Cool, Heat, and Power plant in Iran), using solar panels and energy-efficient appliances.

MANUFACTURING OF ENERGY EFFICIENT SOLAR PANELS

2020 ◽  
Author(s):  
Андрей Дмитриевич Бухтеев ◽  
Виктория Буянтуевна Бальжиева ◽  
Анна Романовна Тарасова ◽  
Фидан Гасанова ◽  
Светлана Викторовна Агасиева
Keyword(s):  
Energy Efficiency ◽  
Solar Cells ◽  
Energy Efficient ◽  
Solar Panels

В данном обзоре приведены проблемы при использовании солнечных элементов и существующие решения этих проблем по повышению энергоэффективности фотоэлементов. Также сравнивается КПД этих солнечных элементов и рассматриваются их особенности. Одним из самых эффективных способов стало применение нанотехнологий. This review presents the problems of using solar cells and existing solutions to these problems to improve the energy efficiency of solar cells. The efficiency of these solar cells is also compared and their features are considered. One of the most effective methods was the use of nanotechnology.

Error-aware Design Procedure to Implement Energy-efficient Approximate Squaring Hardware

2020 ◽  
Vol 10 (4) ◽  
pp. 471-477
Author(s):  
Merin Loukrakpam ◽  
Ch. Lison Singh ◽  
Madhuchhanda Choudhury
Keyword(s):  
Energy Saving ◽  
Relative Error ◽  
Energy Efficient ◽  
Piecewise Linear ◽  
Arithmetic Operation ◽  
Design Procedure ◽  
Digital Signal ◽  
Maximum Relative Error ◽  
Square Function ◽  
Efficient Design

Background:: In recent years, there has been a high demand for executing digital signal processing and machine learning applications on energy-constrained devices. Squaring is a vital arithmetic operation used in such applications. Hence, improving the energy efficiency of squaring is crucial. Objective:: In this paper, a novel approximation method based on piecewise linear segmentation of the square function is proposed. Methods: Two-segment, four-segment and eight-segment accurate and energy-efficient 32-bit approximate designs for squaring were implemented using this method. The proposed 2-segment approximate squaring hardware showed 12.5% maximum relative error and delivered up to 55.6% energy saving when compared with state-of-the-art approximate multipliers used for squaring. Results: The proposed 4-segment hardware achieved a maximum relative error of 3.13% with up to 46.5% energy saving. Conclusion:: The proposed 8-segment design emerged as the most accurate squaring hardware with a maximum relative error of 0.78%. The comparison also revealed that the 8-segment design is the most efficient design in terms of error-area-delay-power product.

Bifunctional single-atomic Mn sites for energy-efficient hydrogen production

Nanoscale ◽  
2021 ◽  
Author(s):  
Xianyun Peng ◽  
Junrong Hou ◽  
Yuying Mi ◽  
Jiaqiang Sun ◽  
Gaocan Qi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Energy Saving ◽  
Hydrogen Evolution Reaction ◽  
Energy Efficient ◽  
Low Cost ◽  
Clean Energy ◽  
H2 Production ◽  
Energy Technology ◽  
Highly Active ◽  
Clean Energy Technology

Electrocatalytic hydrogen evolution reaction (HER) for H2 production is essential for future renewable and clean energy technology. Screening energy-saving, low-cost, and highly active catalysts efficiently, however, is still a grand...

Opportunities and Challenges in Perovskite LEDs Commercialization

2021 ◽  
Author(s):  
Kai Zhang ◽  
Ningning Zhu ◽  
Mingming Zhang ◽  
Lei Wang ◽  
Jun Xing
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Light Emitting Diode ◽  
Environment Friendly ◽  
Light Emitting ◽  
Lighting Technology

Recently, the light-emitting diode (LED) has been considered as an energy-saving and environment-friendly lighting technology，which is ten times more energy efficient than conventional incandescent lights. As an emerging photoelectric material,...

Scheduling Scheme Based on Smart Grid of Energy-Saving

2013 ◽  
Vol 340 ◽  
pp. 908-912
Author(s):  
Ke Zhang
Keyword(s):  
Smart Grid ◽  
Energy Saving ◽  
Energy Efficient ◽  
Power Industry ◽  
Ideal Solution ◽  
Scheduling Scheme ◽  
Electricity System ◽  
Scheduling Model ◽  
The Future ◽  
Energy Efficient Scheduling

The smart grid is an ideal solution of the future electricity system, and scheduling aspects of the smart grid, the nerve center of the most intelligent can best embody the intelligent characteristic, this article summarizes the development of smart grid technologies, energy-saving scheduling, and the smart grid ofsignificance analysis to explore the implementation of energy-saving dispatch to the power industry, an energy efficient scheduling model and highlight the superiority of the energy-saving scheduling in order to ensure the smooth implementation of energy-saving scheduling.

scholarly journals Light-driven fine chemical production in yeast biohybrids

Science ◽  
2018 ◽  
Vol 362 (6416) ◽  
pp. 813-816 ◽  
Author(s):  
Junling Guo ◽  
Miguel Suástegui ◽  
Kelsey K. Sakimoto ◽  
Vanessa M. Moody ◽  
Gao Xiao ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Rational Design ◽  
Light Harvesting ◽  
Shikimic Acid ◽  
Genetically Engineered ◽  
Efficient Production ◽  
Chemical Production ◽  
Photogenerated Electrons ◽  
Common Precursor ◽  
Hybrid Platform

Inorganic-biological hybrid systems have potential to be sustainable, efficient, and versatile chemical synthesis platforms by integrating the light-harvesting properties of semiconductors with the synthetic potential of biological cells. We have developed a modular bioinorganic hybrid platform that consists of highly efficient light-harvesting indium phosphide nanoparticles and genetically engineered Saccharomyces cerevisiae, a workhorse microorganism in biomanufacturing. The yeast harvests photogenerated electrons from the illuminated nanoparticles and uses them for the cytosolic regeneration of redox cofactors. This process enables the decoupling of biosynthesis and cofactor regeneration, facilitating a carbon- and energy-efficient production of the metabolite shikimic acid, a common precursor for several drugs and fine chemicals. Our work provides a platform for the rational design of biohybrids for efficient biomanufacturing processes with higher complexity and functionality.

scholarly journals Modern energy efficient technologies of high-rise construction

2018 ◽  
Vol 33 ◽  
pp. 02047 ◽  
Author(s):  
Inessa Lukmanova ◽  
Roman Golov
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Residential Buildings ◽  
Unified Model ◽  
High Rise ◽  
Design Construction

The paper analyzes modern energy-efficient technologies, both being applied, and only introduced into the application in the construction of high-rise residential buildings. All technologies are systematized by the authors as part of a unified model of "Arrows of Energy-Efficient Technologies", which imply performing energy-saving measures in the design, construction and operation of buildings.

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