scholarly journals Modeling of construction waste processing system development

2018 ◽  
Vol 251 ◽  
pp. 02032 ◽  
Author(s):  
Pavel Oleinik ◽  
Tatyana Kuzmina ◽  
Viktor Zenov ◽  
Vitaliy Melnichuk
Keyword(s):  
Large Scale ◽  
System Development ◽  
Processing System ◽  
Data Bank ◽  
Production Equipment ◽  
Waste Utilization ◽  
Raw Material ◽  
Efficient Production ◽  
Waste Processing ◽  
Construction Waste

Construction waste is the most important source for reducing raw material resources. In this regard, many countries conduct large-scale research in developing progressive construction waste utilization technologies and creating highly efficient production equipment. Current experience in this field views the construction waste processing system as a number of interconnected subsystems: organizational and technical preparatory measures; waste collection and sorting; waste containerization, packaging and transportation; waste processing and manufacturing of recyclable resources. Each sub-system consists of a set of measures which characterize the change in material quality and properties. Modeling of the construction waste processing system addresses the task of assessing the actual level of the system and subsystems and determining the condition of the same within certain forecasted time perspectives. For this purpose, the cost vs. revenue comparison tools are used. To develop the construction waste processing system and maintain it in working condition it is important that, early on in the project, a waste classification catalogue and a relevant glossary of terms be compiled with all waste processing contractors having to agree to it and observe it. Also, a data bank containing all the relevant engineering and process documentation shall be drafted and maintained

scholarly journals Modeling of construction waste processing system development

2018 ◽  
Vol 193 ◽  
pp. 05009 ◽  
Author(s):  
Pavel Oleinik
Keyword(s):  
Large Scale ◽  
System Development ◽  
Processing System ◽  
Data Bank ◽  
Production Equipment ◽  
Waste Utilization ◽  
Raw Material ◽  
Efficient Production ◽  
Waste Processing ◽  
Construction Waste

Construction waste is the most important source for reducing raw material resources. In this regard, many countries conduct large-scale research in developing progressive construction waste utilization technologies and creating highly efficient production equipment. Current experience in this field views the construction waste processing system as a number of interconnected subsystems: organizational and technical preparatory measures; waste collection and sorting; waste containerization, packaging and transportation; waste processing and manufacturing of recyclable resources. Each subsystem consists of a set of measures which characterize the change in material quality and properties. Modeling of the construction waste processing system addresses the task of assessing the actual level of the system and subsystems and determining the condition of the same within certain forecasted time perspectives. For this purpose, the cost vs. revenue comparison tools are used. To develop the construction waste processing system and maintain it in working condition it is important that, early on in the project, a waste classification catalogue and a relevant glossary of terms be compiled with all waste processing contractors having to agree to it and observe it. Also, a data bank containing all the relevant engineering and process documentation shall be drafted and maintained.

scholarly journals Investigating the Effects of Water in Feedstock on the Energetic Efficiency of Producing Polyoxymethylene Dimethyl Ethers

2020 ◽  
Vol 10 (21) ◽  
pp. 7474
Author(s):  
Zhenwei Han ◽  
Chuanlei Fu
Keyword(s):  
Large Scale ◽  
Raw Material ◽  
Energetic Efficiency ◽  
Efficient Production ◽  
Important Research ◽  
Research Fields ◽  
Polyoxymethylene Dimethyl Ethers ◽  
Vapor Liquid Equilibria ◽  
Material Preparation ◽  
Water Contents

Large-scale eco-efficient production of polyoxymethylene dimethyl ethers (PODEn) has garnered wide attention as environmental-friendly diesel additives. Among the various PODEn research studies, the effect of water on the PODEn process is one of the most important research fields. In this work, the effects of water content in feedstock on the reboiler duty of the PODEn process were analyzed by rigorous simulation. To ensure the accuracy of the model, vapor–liquid equilibria (VLE) data of PODE2-H2O were measured and the model was regressed by using the experimental data. Furthermore, the production process consisting of raw material preparation section and PODEn synthesis section was evaluated by comparing it with the various water contents (0, 0.05, 0.10 and 0.15 g/g) in feedstock. We found the reboiler duty in the case of 0.10 g/g water in feedstock was lowest (77.99 MJ/kg), which is even lower than anhydrous case (100.24 MJ/kg). The results suggest that the water can be appropriately allowed in the production, which can reduce the reboiler duty of the PODEn.

Resource Recovery: The Contribution of Energy-From-Waste Plants

2012 ◽  
Author(s):  
Ralf Koralewska
Keyword(s):  
Large Scale ◽  
Bottom Ash ◽  
District Heating ◽  
Raw Material ◽  
Efficient Production ◽  
Conservation Of Resources ◽  
Key Factors ◽  
After Care ◽  
Recent Developments ◽  
Energy From Waste

Energy-from-Waste plants using grate-based systems have gained world-wide acceptance as the preferred method for the sustainable treatment of waste. Key factors are not only the reduction of waste volume and mass and the destruction or separation of pollutants but also the efficient production and use of energy (electricity, district heating/cooling, process steam), compliant disposal and the recovery of resources from combustion residues (e.g. metals, rare earths). International requirements relating to energy efficiency and materials recovery by means of thermo-recycling in Energy-from-Waste plants call for the continuing development and optimization of existing technologies and concepts. The technologies and processes for the recovery of reusable materials from dry-discharged bottom ash and from filter ash point to the key role that Energy-from-Waste plants are able to play in the efficient conservation of resources. It is primarily thermal treatment with dry discharge and subsequent processing of the bottom ash fractions that enables Energy-from-Waste plants to justify their status as universal recyclers. In addition to recovery of the energy inherent in the waste, the treatment of dry-discharged bottom ash is an important contribution to compliance with raw material and climate policies and to the promotion of closing the material cycle in general. Furthermore, dry bottom ash discharge represents a further step towards waste-free operation and “after-care-free” landfills. This paper documents the potential of Energy-from-Waste plants for the recovery of resources and provides examples of recent developments and large-scale implementations of innovative recovery technologies in Europe.

scholarly journals Use of Wastes of the Livestock Industry as a Possibility for Increasing the Efficiency of AIC and Replenishing the Energy Balance

2020 ◽  
Vol 9 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Inna Honcharuk
Keyword(s):  
Large Scale ◽  
Primary Energy ◽  
Raw Material ◽  
Biofuel Production ◽  
Efficient Production ◽  
Industrial Complex ◽  
State Budget ◽  
Global Trends ◽  
National Production ◽  
Total Primary Energy Consumption

AbstractThere are several reasons for the economic and social necessity in forming and developing the biofuels market of Ukraine, starting with energy security considerations, diversification of national production, support of innovations and ending with economic and social efficiency of biofuels market development on the basis of high motivation for the agrarian sector growth, positive social bias towards rural population growth and environmental security through renewable energy. The immediate prospect of energy autonomy for agro-industrial production should be based on efficient production and use of biomass. At present, biomass is the fourth largest fuel in the world, producing about 2 billion tonnes of conventional fuels per year, which is about 14% of the world’s total primary energy consumption. In some countries, this figure is even higher, but in Ukraine it still does not exceed 3%. This will help Ukraine reduce its dependence on energy imports, halt its transformation into a raw material appendage, and enable processing of such a large-scale resource while obtaining hundreds of thousands of jobs, income for the citizens and for the state budget. At this stage of state development, biofuel production is one of the determining catalysts for new global trends in Ukraine’s agro-industrial complex that will contribute to its sustainable development.

Model Pemasaran Usaha Mikro Kecil Dan Menengah (Umkm) Berbasis Online Dalam Mendukung Pariwisata

2017 ◽  
Vol 17 (1) ◽  
pp. 66
Author(s):  
Muhammad Tajuddin ◽  
Abdul Manan
Keyword(s):  
Information Technology ◽  
Small And Medium Enterprises ◽  
System Development ◽  
Internet Technology ◽  
Raw Material ◽  
Integrated Marketing ◽  
International Scope ◽  
Data Base Design ◽  
The Media ◽  
Medium Enterprises

West Nusa Tenggara ’NTB’ is a region of the golden triangle stripe of tourism destination located between Komodo island and Tana Toraja. As the industry backing for small and middle scale businesses getting grow up and have got governmental supporting since economical crises hit Indonesia at the end 1997. In fact, many of those who have not yet optimize the information technology (IT) in running their business. The approach to meet the Small and Medium Enterprises (SMEs) with the proper customer or to find the proper raw material seller is through the media.  Development of internet technology is so rapid, it is a necessity of SMEs using it as a business communications medium, because Internet utility for e-commerce complement has long been developed in both national and international scope.  Furthermore, the research elaborates the integrated e-commerce model and SMEs as an information technology-based model of integrated marketing strategy besides, software creation and its implementation on SMEs in Mataram municipality.  E-commerce and SMEs were designed to use System Development Life Cycle (SDLC) concerning the safety sistem, flowcart diagram and data base design aspects.

Pemanfaatan Sistem Informasi Terhadap Kinerja Pelayanan, Sirkulasi Buku Dan Pengolahan Arsip

2018 ◽  
Vol 4 (1) ◽  
pp. 87-96
Author(s):  
Yanni Suherman
Keyword(s):  
Information System ◽  
Data Processing ◽  
System Development ◽  
Processing System ◽  
Data Processing System ◽  
Data Archiving ◽  
Data Archives ◽  
Development Life Cycle ◽  
Search Data

Research conducted at the Office of Archives and Library of Padang Pariaman Regency aims to find out the data processing system library and data archiving. All data processing is done is still very manual by using the document in writing and there is also a stacking of archives on the service. By utilizing library information systems and archives that will be applied to the Office of Archives and Library of Padang Pariaman Regency can improve the quality of service that has not been optimal. This research was made by using System Development Life Cycle (SDLC) which is better known as waterfall method. The first step taken on this method is to go directly to the field by conducting interviews and discussions. This information system will be able to assist the work of officers in terms of data processing libraries and facilitate in search data archives by presenting reports more accurate, effective and efficient.

scholarly journals Alien Wood Species as a Resource for Wood-Plastic Composites

2020 ◽  
Vol 11 (1) ◽  
pp. 44
Author(s):  
Sergej Medved ◽  
Daša Krapež Tomec ◽  
Angela Balzano ◽  
Maks Merela
Keyword(s):  
Wood Species ◽  
Dimensional Stability ◽  
Laser Scanning ◽  
Large Scale ◽  
Laser Scanning Microscopy ◽  
Raw Material ◽  
Confocal Laser ◽  
Alien Plant ◽  
Wood Plastic Composites ◽  
Plastic Composites

Since invasive alien species are one of the main causes of biodiversity loss in the region and thus of changes in ecosystem services, it is important to find the best possible solution for their removal from nature and the best practice for their usability. The aim of the study was to investigate their properties as components of wood-plastic composites and to investigate the properties of the wood-plastic composites produced. The overall objective was to test the potential of available alien plant species as raw material for the manufacture of products. This would contribute to sustainability and give them a better chance of ending their life cycle. One of the possible solutions on a large scale is to use alien wood species for the production of wood plastic composites (WPC). Five invasive alien hardwood species have been used in combination with polyethylene powder (PE) and maleic anhydride grafted polyethylene (MAPE) to produce various flat pressed WPC boards. Microstructural analyses (confocal laser scanning microscopy and scanning electron microscopy) and mechanical tests (flexural strength, tensile strength) were performed. Furthermore, measurements of density, thickness swelling, water absorption and dimensional stability during heating and cooling were carried out. Comparisons were made between the properties of six WPC boards (five alien wood species and mixed boards). The results showed that the differences between different invasive alien wood species were less obvious in mechanical properties, while the differences in sorption properties and dimensional stability were more significant. The analyses of the WPC structure showed a good penetration of the polymer into the lumens of the wood cells and a fine internal structure without voids. These are crucial conditions to obtain a good, mechanically strong and water-resistant material.

scholarly journals On the Throughput Optimization in Large-Scale Batch-Processing Systems

2021 ◽  
Vol 48 (3) ◽  
pp. 128-129
Author(s):  
Sounak Kar ◽  
Robin Rehrmann ◽  
Arpan Mukhopadhyay ◽  
Bastian Alt ◽  
Florin Ciucu ◽  
...  
Keyword(s):  
Large Scale ◽  
Mean Field ◽  
Queueing Network ◽  
Processing System ◽  
Batch Size ◽  
System Throughput ◽  
Throughput Optimization ◽  
Mean Field Model ◽  
Optimal Batch Size ◽  
Globally Attractive

We analyze a data-processing system with n clients producing jobs which are processed in batches by m parallel servers; the system throughput critically depends on the batch size and a corresponding sub-additive speedup function that arises due to overhead amortization. In practice, throughput optimization relies on numerical searches for the optimal batch size which is computationally cumbersome. In this paper, we model this system in terms of a closed queueing network assuming certain forms of service speedup; a standard Markovian analysis yields the optimal throughput in w n4 time. Our main contribution is a mean-field model that has a unique, globally attractive stationary point, derivable in closed form. This point characterizes the asymptotic throughput as a function of the batch size that can be calculated in O(1) time. Numerical settings from a large commercial system reveal that this asymptotic optimum is accurate in practical finite regimes.

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