scholarly journals A Practical Model for Evaluating the Energy Efficiency of Software Applications

2014 ◽  
Author(s):  
Georgios Kalaitzoglou ◽  
Magiel Bruntink ◽  
Joost Visser
Keyword(s):  
Energy Efficiency ◽  
Software Applications ◽  
Practical Model

Indicators and Methodologies of Energy Efficiency in China

2013 ◽  
Vol 275-277 ◽  
pp. 2683-2688
Author(s):  
Bin Wang ◽  
Chun You Wu
Keyword(s):  
Energy Efficiency ◽  
Great Difficulty ◽  
Review Of Literature ◽  
Evaluation Models ◽  
Dea Models ◽  
Practical Model ◽  
Future Work ◽  
Desirable And Undesirable Outputs ◽  
Environmental Outcome ◽  
Output Indicator

The inconsensus in the definition and indicators of energy efficiency has caused great difficulty when evaluating energy efficiency. The research, based on a review of literature focused on China’s energy efficiency, discussed the indicators and evaluation models of energy efficiency. Current studies exhibited many input indicators but output indicator focused on GDP, neglecting the environmental outcome. DEA model is proved to be a more reliable and practical model which can illustrate the multiple elements involved in the use of energy. A common limitation found in the previously advocated DEA models in energy efficiency analysis relates to the absence of undesirable output in the production process. The future work should be done in the framework of total-factor analysis taking account of both desirable and undesirable outputs.

scholarly journals Architecture and Mechanisms of Energy Auto-Tuning

2012 ◽  
pp. 45-73 ◽  
Author(s):  
Sebastian Götz ◽  
Claas Wilke ◽  
Sebastian Cech ◽  
Uwe Aßmann
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Data Extraction ◽  
Optimization Technique ◽  
Functional Requirements ◽  
Software Applications ◽  
It Systems ◽  
Data Extraction Tool ◽  
Auto Tuning ◽  
The Cost

Energy efficiency of IT infrastructures has been a well-discussed research topic for several decades. The resulting approaches include hardware optimizations, resource management in operating systems, network protocols, and many more. The approach the authors present in this chapter is a self-optimization technique for IT infrastructures, which takes hard- and software components as well as users of software applications into account. It is able to ensure minimal energy consumption for a user request along with a set of non-functional requirements (e.g., the refresh rate of a data extraction tool). To optimize the ratio between utility of end users and the cost in terms of energy consumption, the system needs inherent variability leading to differentiated energy profiles and mechanisms to reconfigure the system at runtime. The authors present their approach called Energy Auto-Tuning (EAT) comprised of these mechanisms and an architecture which automatically tunes the energy efficiency of IT systems.

scholarly journals Improving the energy efficiency of autonomous heat supply for residential and public buildings in rural areas using condensing systems in conjunction with small boilers of the traditional type

2021 ◽  
pp. 62-66
Author(s):  
Andrey Konstantinovich Aksenov ◽  
Dmitriy Petrovich Kosorukov
Keyword(s):  
Energy Efficiency ◽  
Water Vapor ◽  
Latent Heat ◽  
Rural Areas ◽  
Heat Supply ◽  
Local Heating ◽  
Combustion Products ◽  
Gaseous Fuel ◽  
Public Buildings ◽  
Practical Model

A practical model of a condensing economizer has been created and tested to increase the efficiency of boiler houses based on gas-fired convection-type boilers. A study was carried out, based on the results of which indicators were obtained that allow the possibility of making a conclusion about the effectiveness of its use for individual and local heating supply of residential and public buildings in rural areas. Technical results have been obtained that contribute to an increase in the potential of the latent heat of condensation of water vapor during deep cooling of the combustion products of gaseous fuel at the outlet of a traditional boiler.

scholarly journals Techniques and tools for measuring energy efficiency of scientific software applications

2015 ◽  
Vol 608 ◽  
pp. 012032 ◽  
Author(s):  
David Abdurachmanov ◽  
Peter Elmer ◽  
Giulio Eulisse ◽  
Robert Knight ◽  
Tapio Niemi ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Scientific Software ◽  
Software Applications

scholarly journals Pengembangan Perangkat Lunak Efisiensi Energi di Gedung Ins. Kabupaten X, Banten

2018 ◽  
Vol 7 (2) ◽  
pp. 92
Author(s):  
Agung Wahyudi Biantoro
Keyword(s):  
Energy Efficiency ◽  
Data Processing ◽  
Data Storage ◽  
Energy Use ◽  
Electrical Energy ◽  
Energy Audit ◽  
Audit Process ◽  
Lighting Condition ◽  
Software Applications ◽  
Energy Use Intensity

ABSTRACT Electrical energy is one of the necessities of life that are important to us, but excessive consumption of electrical energy will bring adverse effects. The effort that needs to be done for energy efficiency is to conduct an energy audit in the building. An energy audit is one way to find out whether the level of energy consumption in the building, whether included in the wasteful or efficient category. In conducting the energy audit process it is necessary innovation for data processing can be done quickly and cost-effectively. Data processing is done by making software applications, using Visual Studio program that is connected with Microsoft Access as data storage. From the results of the research, the value of Energy Use Intensity (EUI or IKE) in Building Ins, Banten is 3.84 kWh / m2 / month or 46.02 kWh / m2 / year. It belongs to the very efficient category which is where to standardize office building that is 240 kWh / m2 / year. The average lighting condition of each room is still below the standard, which is below 240 lux, while the average AC temperature condition is 24.40C, in general has an efficient performance. The results of testing software applications are known to run well, with fast operation and can produce accurate data. Keywords: Energy Audit, EUI, Energy Efficiency, Software Energy Audit

Drying and heating of scrap metal at steelmaking: industrial safety, economics, ecology

2020 ◽  
Vol 76 (12) ◽  
pp. 1353-1258
Author(s):  
V. A. Spirin ◽  
V. E. Nikol’skii ◽  
D. V. Vokhmintsev ◽  
A. A. Moiseev ◽  
P. G. Smirnov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
High Efficiency ◽  
Steel Production ◽  
Scrap Metal ◽  
Industrial Safety ◽  
Technical Solution ◽  
Metal Charge ◽  
Basic Task ◽  
Scrap Heating ◽  
Winter Time

At steel production based on scrap metal utilization, the scrap heating before charging into a melting facility is an important way of energy efficiency increase and ecological parameters improving. In winter time scrap metal charging with ice inclusions into a metal melt can result in a considerable damage of equipment and even accidents. Therefore, scrap preliminary drying is necessary to provide industrial safety. It was shown, that in countries with warm and low-snow climate with no risk of scrap metal icing up during its transportation and storing in the open air, the basic task being solved at the scrap drying is an increase of energy efficiency of steelmaking. InRussiathe scrap metal drying first of all provides the safety of the process and next - energy saving. Existing technologies of scrap metal drying and heating considered, as well as advantages and drawbacks of technical solutions used at Russian steel plants. In winter time during scrap metal heating at conveyers (Consteel process) hot gases penetrate not effectively into its mass, the heat is not enough for evaporation of wetness in the metal charge. At scrap heating by the furnace gases, a problem of dioxines emissions elimination arises. Application of shaft heaters results in high efficiency of scrap heating. However, under conditions of Russian winter the upper scrap layers are not always heated higher 0 °С and after getting into a furnace bath the upper scrap layers cause periodical vapor explosions. The shaft heaters create optimal conditions for dioxines formation, which emit into atmosphere. It was shown, that accounting Russian economic and nature conditions, the metal charge drying and heating in modified charging buckets by the heat of burnt natural gas or other additional fuel is optimal. The proposed technical solution enables to burnt off organic impurities ecologically safely, to melt down ice, to evaporate the wetness in the scrap as well as to heat the charge as enough as the charging logistics enables it. The method was implemented at several Russian steel plants. Technical and economical indices of scrap metal drying in buckets under conditions of EAF-based shop, containing two furnaces ДСП-100, presented.

Perspectives and Regulation of the Russian Market for Project-based Transactions under the Kyoto Protocol

2008 ◽  
pp. 108-125
Author(s):  
K. Zavodov
Keyword(s):  
Energy Efficiency ◽  
Market Mechanism ◽  
Point Of View ◽  
Market Regulation ◽  
Foreign Investments ◽  
Russian Market ◽  
Increase Energy Efficiency ◽  
New Form ◽  
Contract Structure ◽  
Carbon Fund

Project-based transactions (PBTs) are a market mechanism of attracting foreign investments in order to abate greenhouse gas emissions and increase energy efficiency of the country’s enterprises. The article provides a classification and analyzes advantages and drawbacks of PBTs from the point of view of a host country. The main trends and factors determining the dynamics of the PBT market are described. Given that Russia currently lags behind the leaders of the PBT market, an incorporation of a state carbon fund is put forward with an aim of channelling PBTs through it. This paper proposes a form of PBT market regulation by incorporating an option mechanism into the contract structure of a transaction. A comparison of the new form of regulation with the tools that are currently in use in Russia and other countries demonstrates its greater economic efficiency under uncertainty.

Sign in / Sign up

Export Citation Format

Share Document