Effectiveness of Residential Buildings Renovation on the Example of Kaunas City

2017 ◽  
Author(s):  
Vaclovas Kveselis ◽  
Eugenija Farida Dzenajavičienė ◽  
Aurimas Lisauskas
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Residential Buildings ◽  
District Heating ◽  
Initial Assessment ◽  
Energy Strategy ◽  
Energy Efficiency Improvement ◽  
Support Measures ◽  
Strategic Goals ◽  
Implementation Policy

Improvement of energy efficiency in buildings is one of the main strategic goals of country’s energy strategy and its’ implementation policy. This goal is being implemented using support measures and implementation instruments in public and residential buildings. Implementation programs were designed and are being implemented in this sector since year 2004; however, there is still lack of research investigating the effectiveness of implemented actions in terms of environmental, economic, and social sustainability using respective criteria. On the other hand, there is lack of objective information for wider research based on measured data, as most of the data comes from programs administrators as estimated energy consumption and savings. The paper provides main criteria for defining renovation sustainability of multi-apartment residential buildings as well as initial assessment of energy efficiency improvement in such buildings implemented under programs partly funded by EU funds and Modernization program for multi-apartment houses. The Kaunas district heating company provided data of metering readings for 103 buildings which are fully or partially renovated in Kaunas City and Kaunas Regional municipalities and covers period of 12 years. The results of investigation show wide scattering of renovation effectiveness regarding renovation costs, energy savings and costs of saved energy.

scholarly journals Measures to Achieve the Energy Efficiency Improvement Targets in the Multi-Apartment Residential Sector

2020 ◽  
Vol 57 (6) ◽  
pp. 40-52
Author(s):  
M. Upitis ◽  
I. Amolina ◽  
I. Geipele ◽  
N. Zeltins
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Savings ◽  
Residential Buildings ◽  
Energy Performance ◽  
The European Union ◽  
Middle Income ◽  
Structural Funds ◽  
Energy Management Systems ◽  
Energy Efficiency Improvement

AbstractDirective (EU) 2018/2002 of the European Parliament and of the Council amending Directive 2012/27/EU on energy efficiency sets a target of 32.5 % energy efficiency to be achieved by 2030, with a possible upward revision in 2023. The directive also stipulates that the obligation to achieve annual energy savings must continue to be met after 2020. In addition, a revised directive on the energy performance of buildings was adopted in May 2018. It includes measures to speed up the renovation of buildings and the transition to more energy-efficient systems, as well as to improve the energy efficiency of new buildings, thus using smart energy management systems [1].Buildings consume the most energy and have the greatest energy saving potential. They are therefore crucial to achieving the European Union’s energy saving targets. The EU allocated around 14 billion EUR to improve the energy efficiency of buildings in the period of 2014–2020, of which 4.6 billion EUR was intended for residential buildings. In addition, the Member States have earmarked 5.4 billion EUR of public co-financing for the improvement of all types of buildings, of which around 2 billion EUR is allocated to residential buildings.Multi-apartment residential buildings in Latvia are in a technically unsatisfactory condition. In Latvia, the service life of multi-apartment residential buildings has been artificially extended. In addition, there is also the problem of reduced construction quality. Housing problems affect all layers of society, but they are most acute for low- and middle-income people.The aim of the research is to study, using the co-financing of the European Union Structural Funds, the activities performed during the renovation process of multi-apartment residential buildings in Latvia and to identify the shortcomings.

scholarly journals Improving the economic performances of the beet-sugar industry

2008 ◽  
pp. 55-61 ◽  
Author(s):  
Bojana Prodanic ◽  
Aleksandar Jokic ◽  
Jelena Markovic ◽  
Zoltan Zavargo
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
General Trend ◽  
Sugar Industry ◽  
Regional Level ◽  
Efficiency Improvement ◽  
Considerable Saving ◽  
Energy Efficiency Improvement

General trend of free trade at the regional level as well as in the direction of European Union has motivated sugar factories located in Serbia to invest into technologies that are more efficient in order to make their products more competitive in the markets of Europe. Until 2005, the project of energy efficiency improvement in Serbian sugar factories was conducted in Crvenka and Zabalj. Now, they have energy consumption around 1 MJ/kg beet, in contrast to the previous consumption of 1.2 up to 1.5 MJ/kg beet. Further improvements are possible but investments would be high. A result of measurements taken during 2006, after the sugar factory "Donji Srem" - Pecinci was reconstructed showed that a considerable saving has been achieved. The first set of measurements showed that the energy consumption was 1.01 MJ/kg beet, which was 20% higher than intended, but at the same time energy savings were about 30% lower with respect to the values before the reconstruction.

scholarly journals Lighting Control Including Daylight and Energy Efficiency Improvements Analysis

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2166 ◽  
Author(s):  
Aniela Kaminska ◽  
Andrzej Ożadowicz
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Experimental Tests ◽  
Experimental Results ◽  
Automation System ◽  
Building Automation ◽  
Total Energy Consumption ◽  
Lighting Control

Energy used for lighting is one of the major components of total energy consumption in buildings. Nowadays, buildings have a great potential to reduce their energy consumption, but to achieve this purpose additional efforts are indispensable. In this study, the need for energy savings evaluation before the implementation of lighting control algorithms for a specified building is highlighted. Therefore, experimental tests have been carried out in a university building with laboratories and other rooms, equipped with KNX building automation system. A dimmable control strategy has been investigated, dependent on daylight illuminance. Moreover, a relationship between external and internal daylight illuminance levels has been evaluated as well. Based on the experimental results, the authors proposed a method for the rough estimation of electrical energy savings. Since, according to the EN 15232 standard, Building Automation and Control Systems (BACS) play an important role in buildings’ energy efficiency improvements, the BACS efficiency factors from this standard have been used to verify the experimental results presented in the paper. The potential to reduce energy consumption from lighting in non-residential buildings by 28% for offices and 24% for educational buildings has been confirmed, but its dependence on specific building parameters has been discussed as well.

Energy Rebound Effect in Guangdong

2012 ◽  
Vol 524-527 ◽  
pp. 3101-3106
Author(s):  
Li Li ◽  
Xue Wen Lin
Keyword(s):  
Energy Efficiency ◽  
Clustering Analysis ◽  
Energy Intensity ◽  
Energy Savings ◽  
Rebound Effect ◽  
High Yield ◽  
Estimation Model ◽  
Low Intensity ◽  
Energy Efficiency Improvement ◽  
Reduce Energy Consumption

Since the view that energy efficiency improvement would increase rather than reduce energy consumption, so-called rebound effect, was put forward and has been the focus that is encouraging a fierce debate within mainstream economics. This paper tries to introduce an improved estimation model by efficiency share decomposed from energy intensity, based on IPAT equation to estimate the rebound effect of three major regions in Guangdong, together with redistricting Guangdong applying hierarchical clustering analysis. The result shows the average rebound effect of low-intensity high-yield area, high-intensity low-yield area, and low-intensity low-yield area, is 17.91%, 10.82% and 8.10%, correspondingly. While the empirical study provides support of existence of rebound effect, it does suggest we should not only rely on improving energy efficiency, but also using market instruments such as resources taxes, to reinforce the energy savings.

Assessing occupant satisfaction and energy behaviours in Toronto’s LEED gold high-rise residential buildings

2014 ◽  
Vol 8 (4) ◽  
pp. 492-505 ◽  
Author(s):  
Craig Brown ◽  
Mark Gorgolewski
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
New Technologies ◽  
Residential Buildings ◽  
Indoor Environmental Quality ◽  
Efficient Manner ◽  
Content Type ◽  
High Rise ◽  
Evaluation Approach ◽  
Occupant Satisfaction

Purpose – This paper aims to present four purposes: to assess occupant satisfaction with indoor environmental quality (IEQ); to determine if occupants appear to be operating their dwellings in an energy efficient manner; to suggest ways that occupant satisfaction and behaviour can help or hinder energy efficiency; and to show that the post-occupancy evaluation approach is an effective tool in diagnosing and improving satisfaction and energy efficiency in high-rise residential buildings. Design/methodology/approach – Beyond measuring occupant satisfaction with IEQ, this paper uses scores and user comments from occupant questionnaires to identify success and indicate frustration and/or confusion with particular building technologies. It also extrapolates the energy efficiency implications of these responses in four Leadership in Energy and Environmental Design Gold residential towers. Findings – The research highlights where problems occur, particularly with the adoption of new technologies which may not be well understood by the occupants. It also identifies behaviour patterns that may negate energy efficiency strategies. Research limitations/implications – The lack of dwelling metre data prevents this research from making causal links between behaviours and their energy implications. Also, the lack of Canadian benchmarks for satisfaction of occupants means that comparisons can only be made to cases from the UK, which is less robust. Originality/value – This type of work has never been done in Canadian residential high rise towers before. It helps to better understand the process of ensuring that occupants successfully adopt innovation that can lead to energy savings.

scholarly journals The Strategy of Implementing Energy Efficiency Standards and Labels for Domestic Air Conditioners in Libya

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Salah M Alabani ◽  
Ibrahim H Tawil
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Total Energy Consumption ◽  
Air Conditioners ◽  
Improve Energy Efficiency ◽  
Reduce Energy Consumption ◽  
Two Stages ◽  
Energy Efficiency Standards

The residential sector in Libya has grown over the past decade in the construction of residential buildings due to the increase in the population. Moreover, the increase in the level of income has contributed to the increase in the purchase of household appliances, which leads to increased demand for energy. Energy consumption in the household sector accounted for 31% of total energy consumption during 2010, and the share of air conditioners in this sector consumed 18.35%. To reduce energy consumption and improve energy efficiency in this sector, policies should be considered to apply energy efficiency standards and markers to household electrical appliances, as they are considered one of the most successful programs used in the world. Countries are implementing such programs to reduce energy consumption in the domestic sector. This paper presents the possibility of implementing such programs to introduce the importance of energy efficiency standards and labeling programs for home appliances in Libya. The calculations required to design such programs show the energy savings that can be achieved during cooling loads in the summer period of 4 months July, August, September). A strategic plan has been developed during 10-year (2020-2030) to estimate the expected savings of energy consumed and to identify possible obstacles and difficulties by gradually increasing the energy efficiency ratio for comestic air conditioners in two stages, from EER10 to EER11 in the first stage is then raised to EER12 as the second stage.

scholarly journals EVALUATION OF ENERGY SAVING POTENTIAL ON THE BASIS OF ENERGY AUDIT

2016 ◽  
Vol 1 (12) ◽  
pp. 89-94 ◽  
Author(s):  
Косухин ◽  
Andrey Kosukhin ◽  
Косухин ◽  
Mikhail Kosukhin ◽  
Семак ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Residential Buildings ◽  
Necessary Condition ◽  
Housing Sector ◽  
Efficiency Improvement ◽  
Energy Audit ◽  
Energy Saving Potential ◽  
Energy Efficiency Improvement ◽  
Existing Housing

There were presented the findings of the research in energy saving and energy efficiency of public and residential buildings with the purpose of evaluating the energy saving potential on the basis of energy audit. There was demonstrated the nature of energy consumption and the evaluation figures of energy saving in state-financed sphere and housing sector of the country. On the basis of research and calculations of various specialists it was determined, that the highest potential of energy efficiency improvement belongs to the housing funds of the country. It was pointed out that capital repairs and reconstruction of the existing housing funds are the necessary condition of implementing the energy saving measures. The investment issues, their types and their attractiveness for energy saving measures and improving the energy efficiency are reflected.

An Improved Method to Evaluate Energy Efficiency of Large-Scale District Heating System with Boiler Heat Source

2013 ◽  
Vol 448-453 ◽  
pp. 2856-2859
Author(s):  
Wei Na ◽  
Yan Song ◽  
Lei Yang
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Large Scale ◽  
District Heating ◽  
Heating System ◽  
Improved Method ◽  
District Heating System ◽  
Energy Efficiency Improvement ◽  
The Difference ◽  
Heating Energy Consumption

Over 600 million square meter heating area use the district heating system in Beijing up to 2013. The construction and operation level of many heating systems are diverse. It leads to the difference in the heating energy consumption and cost. The obstacles that impacts on the energy efficiency improvement for the district heating system in Beijing were presented. The primary job to reduce the gross heating energy consumption is to evaluate the energy efficiency of the heating system, reasonably. The aim of the paper was to provide an improved method to evaluate the energy efficiency of a district heat system.The energy conversion between the different typical parts of a heating system was discussed: the source, the primary network, the secondary network, the heat exchanger station and the building. Also, six district heating system in Beijing was evaluated by the method to illustrate the proposed technique.

scholarly journals The Environmental Impact Reduction obtained by implementing an Energy Management System. The advantages of using Energy Management and Energy Savings Standards when performing Industrial Energy Audits

2019 ◽  
Vol 112 ◽  
pp. 04007
Author(s):  
Mircea Scripcariu ◽  
Ioan Sevastian Bitir-Istrate ◽  
Cristian Gheorghiu ◽  
Aida Maria Neniu
Keyword(s):  
Energy Efficiency ◽  
Environmental Impact ◽  
Energy Management ◽  
Energy Use ◽  
Energy Savings ◽  
Distribution Networks ◽  
Energy Performance ◽  
Energy Efficiency Improvement ◽  
Impact Reduction ◽  
Energy Audits

Energy audits are used world-wide for developing energy efficiency projects. Industrial consumers have complex energy supply, generation and distribution networks and a variety of energy use installations. Romanian industrial companies became more interested in the last years in implementing Energy Management Systems in accordance with ISO 50001 standard. This paper presents a comparison of using the current way of developing energy audits and the concepts provided by the ISO group of standards, by quantifying the environmental impact reduction generated by each methodology. Authors pointed out that current legislation does not fully match the rigors of the ISO 50001 group of standards when evaluating the Energy Baseline (EB), the Energy Performance Indicators (EPI) or the Energy Performance Improvement Actions (EPIA), thus leading to a lower global energy efficiency improvement in the hypothesis of implementing all the recommended EPIAs [1]. Identifying and developing energy efficiency measures following the recommendations of the energy management and energy savings group of standards may be more consistent and less risky for the industrial company, which in turn can lead to an overall improvement of the Carbon Footprint [2].

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