Investigation on the Energy Efficiency of Innovative Hybrid Impact Hydroforming

2014 ◽  
Vol 989-994 ◽  
pp. 1282-1285 ◽  
Author(s):  
Shao Hua Wang ◽  
Li Hui Lang ◽  
Li Jing Lin
Keyword(s):  
Energy Efficiency ◽  
Impact Energy ◽  
Technology Use ◽  
High Energy ◽  
Linear Increase ◽  
Simulation Software ◽  
Gas Pressure ◽  
Energy Output ◽  
Short Time ◽  
The Impact

The innovative hybrid impact hydroforming (IHF) technology use high energy forming complex parts in very short time which can improving forming quality of hardforming materials like Aluminum alloy widely used in automotive and aircraft industries. The impact hydroforming technology means the most features are formed by hydroforming and the small features are rapidly reshaped by high intensity impact energy in a very short time after the traditional hydroforming. Thus, the impact energy is the most important parameter of Innovative Hybrid Impact Hydroforming. Using numerical simulation software MSC.PATRAN/DYTRAN, the whole system of hybrid impact hydroforming apparatus was analyzed. The initial gas pressure and the mass of hammer directly affect the energy efficiency. The results show greater initial gas pressure will linear increase the energy output. Moreover, the bigger mass of hammer will reduce the velocity of hammer, but it still increase the energy output. Therefore, the research is very useful for improving energy efficiency of IHFand widing its application.

scholarly journals Overall Efficiency of On-Site Production and Storage of Solar Thermal Energy

2021 ◽  
Vol 13 (3) ◽  
pp. 1360
Author(s):  
Teodora M. Șoimoșan ◽  
Ligia M. Moga ◽  
Livia Anastasiu ◽  
Daniela L. Manea ◽  
Aurica Căzilă ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Thermal Energy ◽  
Urban Areas ◽  
Renewable Energy Sources ◽  
Multicriteria Analysis ◽  
High Energy ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
The Impact ◽  
And Storage

Harnessing renewable energy sources (RES) using hybrid systems for buildings is almost a deontological obligation for engineers and researchers in the energy field, and increasing the percentage of renewables within the energy mix represents an important target. In crowded urban areas, on-site energy production and storage from renewables can be a real challenge from a technical point of view. The main objectives of this paper are quantification of the impact of the consumer’s profile on overall energy efficiency for on-site storage and final use of solar thermal energy, as well as developing a multicriteria assessment in order to provide a methodology for selection in prioritizing investments. Buildings with various consumption profiles lead to achieving different values of performance indicators in similar configurations of storage and energy supply. In this regard, an analysis of the consumption profile’s impact on overall energy efficiency, achieved in the case of on-site generation and storage of solar thermal energy, was performed. The obtained results validate the following conclusion: On-site integration of solar systems allowed the consumers to use RES at the desired coverage rates, while restricted by on-site available mounting areas for solar fields and thermal storage, under conditions of high energy efficiencies. In order to segregate the results and support optimal selection, a multicriteria analysis was carried out, having as the main criteria the energy efficiency indicators achieved by hybrid heating systems.

scholarly journals Technological Innovation in the Aspect of Safety in the Process of Heat Supply

2019 ◽  
Vol 1 (1) ◽  
pp. 412-418
Author(s):  
Aleksandra Wrzalik ◽  
Matevž Obrecht
Keyword(s):  
Energy Efficiency ◽  
Heat Supply ◽  
Renewable Energy Sources ◽  
District Heating ◽  
High Energy ◽  
The European Union ◽  
Heating Systems ◽  
Operation Conditions ◽  
Network Operation ◽  
The Impact

AbstractIn recent years heating in Poland has been transformed as a result of the priorities of the country's energy policy implemented within the European Union. The increase in energy security, the development of renewable energy sources and the fulfilment of legal and environmental requirements are very important. Exploitation of district heating systems should ensure reliable and safe heat supplies for industrial and municipal customers with high energy efficiency and reduction of environmental impact. The article discusses the conditions and directions of centralized heating systems development as well as technical and economic issues, which are important for the security of heat supply. The Author describes selected technological innovations used in the technical infrastructure for heat transfer and modern IT systems which are improving the management of heating systems. The article includes the results of simulation research with use of IT tools showing the impact of selected innovations on the improvement of network operation conditions. Directions of modernization of heating systems in the aspect of increasing energy efficiency and security of heat supply have also been indicted here.

scholarly journals Investigating the impacts of a changing climate on the risk of overheating and energy performance for a UK retirement village adapted to the nZEB standards

2019 ◽  
Vol 40 (4) ◽  
pp. 470-491 ◽  
Author(s):  
Radwa Salem ◽  
Ali Bahadori-Jahromi ◽  
Anastasia Mylona
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Energy Performance ◽  
High Energy ◽  
Climatic Conditions ◽  
Simulation Software ◽  
Mitigation Strategies ◽  
Zero Energy ◽  
Changing Climate ◽  
Retirement Village

The death toll of the 2003 heat wave in Europe exceeded 35,000 heat-related deaths. The elderly population were the most affected. The current paradigm within the construction industry in cold-dominant countries is to design/retrofit buildings with high levels of insulation. Whilst thermal comfort may be reached during colder months with this approach, the risk of overheating can be increased during hotter months. This paper aims to examine the impacts of a changing climate on the risk of overheating and energy performance for a UK retirement village. For this study, the buildings within the retirement village will be designed to reach the nearly zero energy building standard. Consequently, the risk of overheating of the buildings within the retirement village as they currently stand and as zero energy buildings will be investigated under current and future climatic conditions. The analysis is carried out using thermal analysis simulation software (TAS, Edsl). Combined heat and power and combined cooling, heat and power will be investigated as mitigating strategies with regard to overheating. The results of this study do not undermine the importance of continuing to improve the energy efficiency of existing buildings but rather highlight that the approach undertaken should be reconsidered. Practical application: Currently, there is emphasis placed on retrofitting and designing buildings, with high energy efficiency standards. Whilst this is in line with our vision as a society towards reaching a decarbonised, sustainable future, this work highlights that doing so, carries risks with regard to overheating. Nonetheless, the results demonstrate that with the incorporation of suitable mitigation strategies and adequate ventilation strategies, it is possible to achieve an energy efficient building that meets the heating and cooling demand (and thereby thermal comfort of occupants) during the heating and non-heating season.

scholarly journals Study of the Impact Abrasive Wear of New Super-High Manganese Steel

2013 ◽  
Vol 575-576 ◽  
pp. 550-553
Author(s):  
Wen Yan Wang ◽  
Jian Xu ◽  
Jing Pei Xie
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Impact Energy ◽  
Wear Surface ◽  
Manganese Steel ◽  
Deformation Bands ◽  
High Manganese ◽  
High Manganese Steel ◽  
Short Time ◽  
The Impact

Based on the traditional Mn13, the super-high manganese steel Mn18 was melted by means of adjusting the amount of C, Mn, adding a certain amount of alloying elements Cr, Mo etc and modification. The results show that with low-impact energy abrasive wear for 60 minutes, the wear resistance of super-high manganese steel Mn18 was greatly improved by contrast with that of Mn13, and the hardness of wear surface was increased slowly with the elapse of the wear time. However, under the high impact energy, the wear resistance of Mn18 is 1.5 times as high as that of Mn13, and the hardness of wear surface was increased to HB440 in a short time. The main wear forms were: cutting, gouging wear and plastic deformation. Typical TEM morphologies of subsurface wear structure consist mostly of high density dislocations, deformation bands.

Investigation on the Effect of Liquid Hammer Geometry to the Pressure Distribution of Innovative Hybrid Impact Hydroforming

2014 ◽  
Vol 941-944 ◽  
pp. 1843-1849 ◽  
Author(s):  
Murhaf Marai ◽  
Li Hui Lang ◽  
Shao Hua Wang ◽  
Li Jin Lin ◽  
Chun Lei Yang ◽  
...  
Keyword(s):  
Loading Condition ◽  
Experimental Approach ◽  
High Energy ◽  
Geometrical Shape ◽  
Wave Loading ◽  
Forming Process ◽  
Short Time ◽  
The Impact ◽  
Complex Parts

The innovative hybrid impact hydroforming (IHF) technology is a kind of high energy forming technique which can be used for forming complex parts with small features, such as convex tables, bars etc. which are widely employed in automotive and aircraft industries. The impact hydroforming technology means the most features are formed by hydroforming and the small features are rapidly reshaped by high intensity impact energy in a very short time after the traditional hydroforming. The impact pressure rises to the peak in 10ms which belongs to dynamic loading. The present work investigates IHF using a numerical /experimental approach. Finite element simulations using MSC.Patran were carried out changing the geometrical shape of liquid hammer.. Using this shock wave loading condition we did forming experiments. During forming process, stress distribution in the blank is comparatively better as compared with traditional methods so possibility of fracture is reduced. Inertia is also an important factor which affects control quality. Therefore, the research is very useful for improving forming quality of complicated products. It will be widely applied in automotive and aircraft industries.

scholarly journals Effect of the Electrodes Type on the Energy Efficiency of Microbial Fuel Cells

2018 ◽  
Vol 1 (2) ◽  
pp. 148
Author(s):  
Tsvetomila Ivanova Parvanova-Mancheva ◽  
Elena Razkazova-Velkova ◽  
Martin Martinov ◽  
Stefan Stefanov ◽  
Venko Beschkov
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Microbial Fuel Cells ◽  
Biological Treatment ◽  
High Energy ◽  
Energy Output ◽  
The Moment ◽  
Graphite Rods ◽  
High Energy Consumption

Traditional methods for wastewater treatment are associated with high energy consumption. This is why biological treatment of water is more appropriate at the moment. In our previous study, oxidation and reduction of pollutants have been proposed to be carried out in a microbial fuel cell (MFC) designed by our laboratory that simultaneously purifies wastewater from sulfide and nitrate ions and generates electricity. The experiments were carried out with two types of electrodes, graphite rods and paddling of activated carbon using a Fumapem® FFA-3-PK-75 (OH- form) membrane. The results show that the cell has higher energy output when using paddling of activated carbon as an electrode.

scholarly journals Can Schrödinger and Heisenberg Make a Contribution to the Spectral Analysis of Signals?

2018 ◽  
Author(s):  
Mario Mastriani
Keyword(s):  
Spectral Analysis ◽  
Fourier Transform ◽  
Computational Cost ◽  
Energy Output ◽  
Quantum Time ◽  
Classical World ◽  
Fourier Theory ◽  
Short Time ◽  
The Impact ◽  
Low Computational Cost

A quantum time-dependent spectrum analysis, or simply, quantum spectral analysis (QSA) is presented in this work, and it’s based on Schrödinger’s equation. In the classical world, it is named frequency in time (FIT), which is used here as a complement of the traditional frequency-dependent spectral analysis based on Fourier theory. Besides, FIT is a metric which assesses the impact of the flanks of a signal on its frequency spectrum - not taken into account by Fourier theory and let alone in real time. Even more, and unlike all derived tools from Fourier Theory (i.e., continuous, discrete, fast, short-time, fractional and quantum Fourier Transform, as well as, Gabor) FIT has the following advantages, among others: a) compact support with excellent energy output treatment, b) low computational cost, O(N) for signals and O(N2) for images, c) it does not have phase uncertainties (i.e., indeterminate phase for a magnitude = 0) as in the case of Discrete and Fast Fourier Transform (DFT, FFT, respectively). Finally, we can apply QSA to a quantum signal, that is, to a qubit stream in order to analyze it spectrally.

Analysis of the Biomass Integrated Combined Cycles With Two Different Structures of Gas Turbines

2008 ◽  
Author(s):  
Sebastian Lepszy ◽  
Tadeusz Chmielniak
Keyword(s):  
Energy Efficiency ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Biomass Conversion ◽  
High Energy ◽  
Electricity Production ◽  
Gas Generator ◽  
Gas Cleaning ◽  
Combined Cycles ◽  
The Impact

Biomass integrated gasification combined cycles (BIGCC) are an interesting solution for electricity production. In relation to other biomass conversion technologies, BIGCC is characterized by relative high energy efficiency. For the sake of high complexity of such systems, one of crucial tasks is evaluation and comparison of the different technological structures of BIGCC. The article shows models and results of simulations of gas steam cycles integrated with biomass gasification. All models and simulations are preformed with Aspen Plus computer program. In the paper the main comparison is made between systems with simple gas turbine and gas turbine with regeneration. Simple gas turbine model based on LM2500 gas turbine parameters, Mercury 50 gas turbine parameters are used for model of gas turbine with regeneration. The model of gas generator consists of two equilibrium reactors. The use of two reactors led to more precise simulations of the flue gas composition, than the model with one reactor. Systems used for study include low-temperature gas cleaning system. Steam cycle consists of 1-pressure heat recovery steam generator (HRSG) and a condensing steam turbine. The main results of the work are: comparison of energy efficiency between system with gas turbine with regeneration and simple gas turbine, sensitive analysis of the impact of pressure in HRSG on energy efficiency, comparison of energy efficiency and heat and mass streams for different configurations of heat exchangers.

scholarly journals Growth of investments as a condition for increasing energy efficiency of the Irkutsk region’s economy

2018 ◽  
Vol 212 ◽  
pp. 08013
Author(s):  
Boris Saneev ◽  
Alexandr Sokolov ◽  
Svetlana Muzychuk
Keyword(s):  
Energy Efficiency ◽  
Economic Development ◽  
Methodological Approach ◽  
Developed Countries ◽  
High Energy ◽  
Increase Energy Efficiency ◽  
Irkutsk Region ◽  
Socio Economic Development ◽  
The Impact ◽  
Efficiency Indicators

The energy efficiency of the Russian economy lags far behind the developed countries of the world that worsens its socio-economic development. To increase energy efficiency, it is necessary to introduce innovative solutions that require large investments. The object of the research is the economy of the Irkutsk region that energy efficiency growth, being the most important priority of socio-economic development, is of particular relevance due to its high energy intensity. The purpose of the study is to perform an energy-economic analysis of the Irkutsk region, and to determine the impact of investment on the energy efficiency growth. The methodological approach developed by the authors and used in this research is based on the balance and statistical methods. In course of the research, retrospective fuel and energy balances (FEB) of the Irkutsk region have been developed, and the energy efficiency indicators have been calculated on their basis. The main directions for the fuller use of the fuel and energy resources (FER) have been identified, the implementation of which will significantly increase the energy efficiency indicators. It will require an increase in investments in the fuel and energy complex (FEC) by 1.7-2 times by 2030 as compared to 2016.

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