scholarly journals A multi-stakeholder perspective on opportunities and challenges for energy efficiency improvement in university buildings

2021 ◽  
Vol 246 ◽  
pp. 05006
Author(s):  
Gireesh Nair ◽  
Shoaib Azizi ◽  
Thomas Olofsson
Keyword(s):  
Energy Efficiency ◽  
Indoor Environment ◽  
Information Technologies ◽  
Energy Use ◽  
Efficiency Improvement ◽  
Improve Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
Stakeholder Perspective ◽  
University Buildings ◽  
Multi Stakeholder

University buildings are relatively energy-intensive. In Sweden, universities usually operate in rented buildings. In this study, interviews were carried out among three categories of stakeholders in a Swedish university to understand their perceptions of energy use and challenges to improve energy efficiency. As per most interviewees, the university’s top management and Akademiska Hus, which owns the buildings, have the main responsibility to reduce the buildings’ energy and carbon footprint. The heads of departments raised the concern on the non-availability of energy data to take actions to reduce energy use. The use of sensors and information technologies to monitor space use, energy use, and indoor environment are attractive to different stakeholders. The implications of the interview results are discussed.

ENERGY EFFICIENCY OF UKRAINE: NEW CHALLENGES AND MAJOR BARRIERS TO ITS IMPLEMENTATION

2016 ◽  
Vol 4 (2) ◽  
pp. 0-0
Author(s):  
Iryna Sotnyk ◽  
Iryna Sotnyk
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Developed Countries ◽  
Efficiency Improvement ◽  
Energy Efficiency Policy ◽  
Energy Efficiency Improvement ◽  
Current State ◽  
New Challenges ◽  
The Developed Countries ◽  
Energy Efficiency Policies

The baseline and barriers to the formation of energy-saving policy and energy efficiency in Ukraine were analyzed in the article. The current state of energy supply and energy use in the country was estimated. The mechanisms of energy efficiency policies in the developed countries of the world and the possibility of their application in Ukraine were evaluated. The critical analysis of energy efficiency policy in Ukraine was represented, as a result of this analysis the recommendations for energy efficiency improvement were developed.

scholarly journals Energy Efficiency in the Supply Chains of the Aluminium Industry: The Cases of Five Products Made in Sweden

Energies ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 245 ◽  
Author(s):  
Joakim Haraldsson ◽  
Maria Johansson
Keyword(s):  
Energy Efficiency ◽  
Focus Group ◽  
Supply Chains ◽  
Global Economy ◽  
Energy Use ◽  
Improve Energy Efficiency ◽  
Increase Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
Group Interviews ◽  
Made In

Improved energy efficiency in supply chains can reduce both environmental impact and lifecycle costs, and thus becomes a competitive advantage in the work towards a sustainable global economy. Viewing the supply chain as a system provides the holistic perspective needed to avoid sub-optimal energy use. This article studies measures relating to technology and management that can increase energy efficiency in the supply chains of five aluminium products made in Sweden. Additionally, energy efficiency potentials related to the flows of material, energy, and knowledge between the actors in the supply chains are studied. Empirical data was collected using focus group interviews and one focus group per product was completed. The results show that there are several areas for potential energy efficiency improvement; for example, product design, communication and collaboration, transportation, and reduced material waste. Demands from other actors that can have direct or indirect effects on energy use in the supply chains were identified. Despite the fact that companies can save money through improved energy efficiency, demands from customers and the authorities would provide the additional incentives needed for companies to work harder to improve energy efficiency.

scholarly journals Energy Efficiency Improvement Solutions for Supermarkets by Low-E Glass Door and Digital Semi-Hermetic Compressor

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3134
Author(s):  
Piyanut Saengsikhiao ◽  
Juntakan Taweekun
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Use ◽  
Payback Period ◽  
Saving Rate ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Glass Door ◽  
The Impact ◽  
Hermetic Compressor

This research presents an energy efficiency improvement solution for supermarkets with the use of low-E glass doors for open refrigerators and a digital semi-hermetic compressor to fix the speed of semi-hermetic compressors. The impact of a door’s installation causes its load to be reduced by 40%, and the compressor shuts down frequently, which decreases its lifetime. In order to ensure that energy-saving solutions do not affect maintenance costs, the installation of a digital semi-hermetic compressor is proposed to lower costs and save energy. Our economic results from tests carried out at a 3000 square meter supermarket, which was open from 6:00 am to 12:00 am and in which we installed 82 doors on 15 open refrigerators, showed a 1.1-year payback period with an energy saving rate of 192,220 kWh/year for store No.1 (R22) and in which we installed 80 doors on 15 open refrigerators, showed a 1.4-year payback period with an energy saving rate of 171,185 kWh/year for store No.2 (R404A). The energy-saving effects of the digital semi-hermetic compressor, which fixes the speed of the semi-compressor and solves the problem of impact from fridge door installation, showed a 2.9-year payback period with an energy saving rate of 26,890 kWh/year for store No.1 (R22) and showed a 2.9-year payback period with an energy saving rate of 26,571 kWh/year for store No.2 (R404A). The results of store No.1 (R22) and store No.2 (R404A) showed no differences. This research is an extension of an energy-saving project that can be carried out on a continuous basis, increasing the efficiency of energy use and being a sustainable source of energy conservation.

scholarly journals Principles of petrochemical cluster’ sustainability assessment based on its members’ energy efficiency performance

2019 ◽  
Vol 124 ◽  
pp. 04013 ◽  
Author(s):  
A. N. Dyrdonova ◽  
T. S. Lin’kova
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Sustainability Assessment ◽  
Electric Energy ◽  
Industrial Clusters ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Efficiency Performance ◽  
Development Plans ◽  
Business Entities

For the Russian economy, the most crucial prerequisite for its moving towards sustainable development would be strong improvement of performance of the domestic enterprises and production complexes. It is obvious that this issue should be addressed with due consideration of the special aspects relevant to social and economic growth of various Russian areas, along with creating a respective cluster-based infrastructure. Therefore, all arrangements aimed at performance efficiency improvement should be reconciled with the social and economic development strategies designed for a particular area, and should be well considered when working out strategic development plans for the regional industrial and territorial clusters, as well as particular enterprises and production plants. This paper includes an analysis of the dynamics pattern of the main indicators characterizing the energy use efficiency in regard to the largest enterprise forming the core of the petrochemical cluster in one of the Russian regions. The study furthermore shows the determined factors bringing the greatest impact on the production energy efficiency improvement. The authors also describe the prospects for production energy intensity reduction against the backdrop of the electric energy and power market liberalization, and explain how accommodation of the industrial clusters’ activities to the changes taking place in the macroeconomic environment for business entities may determine the need for addressing a whole range of fundamentally new issues of methodological, methodical and organizational nature, which are relevant to development of a cluster behaviour strategy in response to the competitive electric energy market.

scholarly journals A High-Level Approach for Energy Efficiency Improvement of FPGAs by Voltage Trimming

2021 ◽  
Author(s):  
Mehdi Safarpour
Keyword(s):  
Energy Efficiency ◽  
Voltage Scaling ◽  
Efficiency Improvement ◽  
Improve Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
High Level

This paper proposes a solution that makes voltage scaling possible by simply using HLS tools provided by vendor to improve energy efficiency of FPGAs by 2x

scholarly journals A High-Level Approach for Energy Efficiency Improvement of FPGAs by Voltage Trimming

2021 ◽  
Author(s):  
Mehdi Safarpour ◽  
Lei Xun ◽  
Geoff V. Merrett ◽  
Olli Silven
Keyword(s):  
Energy Efficiency ◽  
Voltage Scaling ◽  
Efficiency Improvement ◽  
Improve Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
High Level

This paper proposes a solution that makes voltage scaling possible by simply using HLS tools provided by vendor to improve energy efficiency of FPGAs by 2x

scholarly journals A High-Level Approach for Energy Efficiency Improvement of FPGAs by Voltage Trimming

2021 ◽  
Author(s):  
Mehdi Safarpour
Keyword(s):  
Energy Efficiency ◽  
Voltage Scaling ◽  
Efficiency Improvement ◽  
Improve Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
High Level

This paper proposes a solution that makes voltage scaling possible by simply using HLS tools provided by vendor to improve energy efficiency of FPGAs by 2x

scholarly journals Classification of historical buildings based on energy efficiency tests and comfort tests

2021 ◽  
Vol 1203 (3) ◽  
pp. 032131
Author(s):  
Małgorzata Fedorczak-Cisak
Keyword(s):  
Energy Efficiency ◽  
Historic Buildings ◽  
Efficiency Improvement ◽  
Historical Buildings ◽  
In Situ Tests ◽  
Improve Energy Efficiency ◽  
Energy Efficiency Improvement ◽  
Polish Law

Abstract The article presents a proposal for the classification of historic buildings in terms of improving energy efficiency, ensuring the comfort of users and their impact on the environment. In the case of historic buildings, Polish law does not require energy efficiency improvement. The proposed classification also takes into account the function of the object and is largely based on "in situ" research. The presented model of classification will help users of historic buildings to undertake appropriate thermo-modernization measures to improve energy efficiency and comfort of use. In situ tests in historic buildings are of particular importance also for the correct diagnostics of this type of buildings.

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