scholarly journals The methodology for studying the process of destruction of solid bulk materials from the standpoint of energy efficiency and quality of the final product

2019 ◽  
Vol 21 (4) ◽  
Author(s):  
D Zhirov
Keyword(s):  
Energy Efficiency ◽  
Bulk Materials ◽  
Solid Bulk

scholarly journals Characterizing Color Quality, Damage to Artwork, and Light Intensity of Multi-Primary LEDs for Museums

Heritage ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 188-197
Author(s):  
Dorukalp Durmus
Keyword(s):  
Energy Efficiency ◽  
Appearance Model ◽  
Light Sources ◽  
Great Flexibility ◽  
Oil Paintings ◽  
Damage Reduction ◽  
Output Variability ◽  
Color Quality ◽  
Trade Offs

Light causes damage when it is absorbed by sensitive artwork, such as oil paintings. However, light is needed to initiate vision and display artwork. The dilemma between visibility and damage, coupled with the inverse relationship between color quality and energy efficiency, poses a challenge for curators, conservators, and lighting designers in identifying optimal light sources. Multi-primary LEDs can provide great flexibility in terms of color quality, damage reduction, and energy efficiency for artwork illumination. However, there are no established metrics that quantify the output variability or highlight the trade-offs between different metrics. Here, various metrics related to museum lighting (damage, the color quality of paintings, illuminance, luminous efficacy of radiation) are analyzed using a voxelated 3-D volume. The continuous data in each dimension of the 3-D volume are converted to discrete data by identifying a significant minimum value (unit voxel). Resulting discretized 3-D volumes display the trade-offs between selected measures. It is possible to quantify the volume of the graph by summing unique voxels, which enables comparison of the performance of different light sources. The proposed representation model can be used for individual pigments or paintings with numerous pigments. The proposed method can be the foundation of a damage appearance model (DAM).

scholarly journals Economic Analysis of a Transport Company in the Aspect of Car Vehicle Operation

2021 ◽  
Vol 13 (1) ◽  
pp. 427
Author(s):  
Magdalena Rykała ◽  
Łukasz Rykała
Keyword(s):  
Weather Conditions ◽  
Neural Model ◽  
Motor Vehicles ◽  
Bulk Materials ◽  
The Sustainable Development ◽  
Average Temperature ◽  
Transport Services ◽  
Vehicle Operation ◽  
The Impact

The article describes the issues of transport of bulk materials. The knowledge of this process has a key impact on the rational planning of transport tasks. It is necessary to have knowledge about the transport services market and the competition that exists in it. In order to achieve a competitive advantage on the market, enterprises should analyze data on the implementation of transport tasks on an ongoing basis. It is also important that the costs incurred from the conducted activity are minimized, while increasing the quality of services and taking into account the sustainable development of the enterprise. The study analyzes data from a few selected motor vehicles in the period of 3 years of operation, coming from an enterprise specializing in the transport of bulk materials. Moreover, a global sensitivity analysis was performed based on a neural model describing the impact of the analyzed factors on the company’s profit. The results show that the most important factors influencing the company’s profit are the fuel consumption of individual vehicles, the driver (driving style) and the month (average temperature, weather conditions).

scholarly journals The International Day of Light - May 16th

2017 ◽  
Vol 9 (4) ◽  
pp. 106
Author(s):  
Dominik Dorosz
Keyword(s):  
Energy Efficiency ◽  
Social Role ◽  
Basic Research ◽  
Social Awareness ◽  
Raising Awareness ◽  
The Social ◽  
The Rich ◽  
Further Development

During 39th session of UNESCO General Conference which held on 7 November 2017 the date May 16th was proclaimed as International Day of Light (IDL). This decision was made after the success of the International Year of Light (IYL) celebrated in 2015. It confirmed that raising awareness of the social role of photonics is crucial for further development. Based on the rich experience of IYL 2015 ("more than 13,000 activities took place in 147 countries to reach an estimated 100 million people"), the most important goals are to be followed by the IDL, including: raising social awareness, education, showing the influence of photonics on culture and art, promoting foreign cooperation and the important role of conducting basic research. As a result, it will lead to the creation of new solutions based on photonic technology, which has resulted in increased energy efficiency and improved quality of our life.

scholarly journals Energy Saving for the Suburban Rolling Stock

2018 ◽  
Vol 7 (4.3) ◽  
pp. 361 ◽  
Author(s):  
Andriy Sumtsov ◽  
Anatoliy Falendysh ◽  
Nataliya Chyhyryk ◽  
Oleg Vasilenko
Keyword(s):  
Energy Efficiency ◽  
Thermal Imaging ◽  
Energy Savings ◽  
Local Heat ◽  
Heat Losses ◽  
Rolling Stock ◽  
Passenger Compartment ◽  
Sealing Layer ◽  
Railway Rolling Stock

This article is concerned with the problem of energy savings and rise of comfortableness of railway rolling stock. Done analysis has shown the insufficient paying attention to the energy efficiency of suburban rolling stock. In particular, to the problem of heat comfort for passengers. For this purpose, a procedure was carried out for the thermal audit of electric trains, taking into account the prevailing array of required indicators. To determine the sites of local heat losses, there was done the thermal-imaging inspection of the electrical train ER2 series during which it was determined the local sites of heat losses and entry of cold air. Besides the passenger compartment, there were inspected the outer body liner and driver's cabin. As a result of inspection of driver's cabin, it was found the bad quality of a sealing layer for side small windows from one side. On the basis of inspection, the recommendations for elimination of found irregularities were developed.   

(Un)fit for 55! Ohne eine verschärfte Governance-Verordnung sind die Klimaziele 2030 nicht zu erreichen

IG ◽  
2021 ◽  
Vol 44 (4) ◽  
pp. 287-300
Author(s):  
Michèle Knodt ◽  
Rainer Müller ◽  
Sabine Schlacke ◽  
Marc Ringel
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Renewable Energy ◽  
Regulatory Action ◽  
The European Union ◽  
Soft Governance ◽  
Energy Efficiency Targets ◽  
Positive Effect ◽  
The Eu

The European Commission's “Fit for 55” package of July 2021 provides for a significant increase in renewable energy and energy efficiency targets in the European Union (EU). However, the EU’s competences in the energy sector are severely limited and subject to sovereignty. Already in 2018, the EU adopted a Governance Regulation that provides for a hardening of the otherwise only soft governance in the areas of renewable energies and energy efficiency due to the lack of European competences. It is intended to ensure that the Commission's recommendations for improving national energy and climate plans are implemented by the member states. An analysis of the quality of implementation of these recommendations now shows that this has a positive effect in areas with harder soft governance but still needs improvement. Increasing the targets of regulatory action cannot be successful without revising the Governance Regulation and hardening soft governance along with it. Otherwise, the EU is not fit for its 55 percent target in 2030.

Impact of energy efficiency policies on the air quality of a North African urban area: emission scenarios by the horizon 2030

2021 ◽  
Vol 14 (8) ◽  
Author(s):  
Dalila Belhout ◽  
Helder Relvas ◽  
Brahim Haddad ◽  
Rabah Kerbachi ◽  
Ana Isabel Miranda
Keyword(s):  
Energy Efficiency ◽  
Air Quality ◽  
Urban Area ◽  
Emission Scenarios ◽  
North African ◽  
Energy Efficiency Policies

Energy Efficiency of a Web and Database Server System

2014 ◽  
Vol 5 (2) ◽  
pp. 29-48 ◽  
Author(s):  
Jukka Kommeri ◽  
Felipe Abaunza ◽  
Marko Niinimaki ◽  
Peter Thanisch ◽  
Tapio Niemi
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Wait Time ◽  
Efficiency Evaluation ◽  
Database Application ◽  
Database Server ◽  
Server Software ◽  
Energy Efficiency Evaluation ◽  
Server System

Energy-efficiency of server hardware, web server software and databases has been widely studied. However, studies that combine these aspects are rare. In this paper the authors present an energy-efficiency evaluation of a web and database application. They concentrate on the following aspects: server BIOS and operating system energy optimization and “bursting” i.e. queuing requests and then executing them in bursts. The authors have used the bursting method with both a database application and a web plus database application. Their results indicate about 10% energy savings using this method. They analyse the model by statistical tools and present an equation to express the quality of service versus burst wait time relationship.

scholarly journals Analysis of the efficiency of a solid fuel boiler depending on the choice of combusted fuel

2020 ◽  
Vol 154 ◽  
pp. 02003
Author(s):  
Grzegorz Pełka ◽  
Wojciech Luboń ◽  
Przemysław Pachytel
Keyword(s):  
Energy Efficiency ◽  
Solid Fuel ◽  
Combustion Process ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Solid Fuels ◽  
The Real ◽  
Residential Sector

In the municipal and residential sector in Poland, as many as 50% of households are heated by solid fuel boilers. Most often these are, unfortunately, inefficient boilers, fired with low-quality coal. This study characterizes the market of boilers for solid fuels in Poland, and also presents the main apportionment of these devices, due to the different criteria that characterize them. The current legal changes in the scope of energy and emission requirements for solid fuel boilers are also discussed. The main purpose of this work is to analyze the real efficiency of the solid fuel over-fired boiler used, depending on the fuel burned in it. The process of burning selected fuels (seasoned wood, coal and pea coal) in the boiler was preceded by tests of these fuels to determine their energy parameters, such as moisture, ash content, the share of volatile matter and calorific value. In the next step, the energy efficiency obtained by the tested solid fuel boiler during the combustion of selected solid fuels was compared. The highest efficiency was achieved during the combustion of pea coal, and the lowest was achieved during the combustion of wood. In any case, the nominal efficiency value was achieved. Solutions that could improve the quality of the combustion process in this type of boiler were proposed.

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