scholarly journals ANALYSIS OF THERMAL INSULATION FROM RENEWABLE RESOURCES

2010 ◽  
Vol 2 (2) ◽  
pp. 66-70 ◽  
Author(s):  
Jolanta Vėjelienė ◽  
Albinas Gailius
Keyword(s):  
Thermal Conductivity ◽  
European Union ◽  
Total Energy ◽  
Energy Saving ◽  
Thermal Insulation ◽  
Renewable Resources ◽  
Significant Part ◽  
The European Union ◽  
Insulating Materials ◽  
Efficient Energy

One of the essential requirements for buildings is energy saving and heat retention. About 40% of the total energy consumed in the European Union is used for heating of buildings. Most of the energy consumed in buildings is used for heating during the cold period and cooling during the warm period. A significant part of energy can be saved due to suitable insulation of buildings. More efficient energy saving can be ensured by using heat-insulating materials produced from renewable resources. In Lithuania straw is often used for making thermal insulation obtained with a thermal conductivity of 0.040 W/(mK). Straw thermal conductivity under different conditions as well as possibilities to use it for producing heat-insulating materials are analysed in the work.

Evaluation of Structure Influence on Thermal Conductivity of Thermal Insulating Materials from Renewable Resources

1970 ◽  
Vol 17 (2) ◽  
pp. 208-212 ◽  
Author(s):  
Jolanta VĖJELIENĖ ◽  
Albinas GAILIUS ◽  
Sigitas VĖJELIS ◽  
Saulius VAITKUS ◽  
Giedrius BALČIŪNAS
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Renewable Resources ◽  
Raw Materials ◽  
Raw Material ◽  
Barley Straw ◽  
Insulation Material ◽  
Insulating Materials ◽  
Insulation Materials ◽  
Thermal Insulating

The development of new thermal insulation materials needs to evaluate properties and structure of raw material, technological factors that make influence on the thermal conductivity of material. One of the most promising raw materials for production of insulation material is straw. The use of natural fibres in insulation is closely linked to the ecological building sector, where selection of materials is based on factors including recyclable, renewable raw materials and low resource production techniques In current work results of research on structure and thermal conductivity of renewable resources for production thermal insulating materials are presented. Due to the high abundance of renewable resources and a good its structure as raw material for thermal insulation materials barley straw, reeds, cattails and bent grass stalks are used. Macro- and micro structure analysis of these substances is performed. Straw bales of these materials are used for determining thermal conductivity. It was found that the macrostructure has the greatest effect on thermal conductivity of materials. Thermal conductivity of material is determined by the formation of a bale due to the large amount of pores among the stalks of the plant, inside the stalk and inside the stalk wall.http://dx.doi.org/10.5755/j01.ms.17.2.494

Development of high-insulating materials with aerogel for protective clothing applications – an overview

2021 ◽  
Vol 112 (2) ◽  
pp. 164-172
Author(s):  
Agnieszka Greszta ◽  
Sylwia Krzemińska ◽  
Grażyna Bartkowiak ◽  
Anna Dąbrowska
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Protective Clothing ◽  
State Of The Art ◽  
Knitted Fabrics ◽  
Insulating Materials ◽  
Textile Materials ◽  
Wide Range ◽  
Properties Of Materials ◽  
Hot Environments

Abstract Aerogels are ultra-light solids with extremely low thermal conductivity (even lower than air), thanks to which they have a huge potential in a wide range of applications. The purpose of this publication is to present the state-of-the art knowledge of the possibility of using aerogels to increase the thermal insulation properties of clothing materials intended for use in both cold and hot environments. Various methods of aerogels application to textile materials (non-woven, woven and knitted fabrics) are discussed, indicating their advantages and limitations. Numerous research studies confirm that aerogels significantly improve the thermal insulation properties of materials, but due to their delicate and brittle structure and their tendency to dusting, their application still poses considerable problems.

Study and Application of Plastic Construction Materials

2011 ◽  
Vol 99-100 ◽  
pp. 1117-1120 ◽  
Author(s):  
Mao Quan Xue
Keyword(s):  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Energy Saving ◽  
Thermal Insulation ◽  
Flame Retardancy ◽  
Building Materials ◽  
Construction Materials ◽  
Low Thermal Conductivity ◽  
Building Walls

As new building materials, plastic has light weigh, corrosion resistance, low thermal conductivity, thermal insulation, waterproof, energy-saving, molding convenient, high recycling characteristic, widely used in building materials. According to the research of improving its flame retardancy, strength, thermal insulation, waterproof properties, the application of plastic use in doors and windows, pipeline, building walls and roofs of buildings, etc. were reviewed, and the developing direction was discussed.

scholarly journals Evolution of Decision Making in the European Union as a Parameter of the Depth of Integration

2020 ◽  
pp. 77-88
Author(s):  
Nikolay Kaveshnikov ◽  
Keyword(s):  
Decision Making ◽  
European Union ◽  
Empirical Data ◽  
European Parliament ◽  
Active Participation ◽  
Significant Part ◽  
Legislative Process ◽  
The European Union ◽  
Working Hypotheses ◽  
The Eu

The article explores the evolution of decision-making procedures and their use in the EU as one of the parameters of integration depth. The study used a database of secondary legislation covering 1990-2019. The final empirical data consists of 5,427 documents, including 1,272 directives and 4,155 regulations. The research empirically confirmed the increase in the frequency of procedures application that envisage a more active participation of the European Parliament in the legislative process. At the same time, the authorreveals that a significant part of secondary legislation is still adopted by the Council without the EPinvolvement. An important difference in the use of adaptation procedures of directives and regulations has been identified; working hypotheses about the reasons for such differences have been formulated.

scholarly journals Energy Renovation of Residential Buildings in Cold Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

2020 ◽  
Vol 12 (6) ◽  
pp. 2287 ◽  
Author(s):  
Luis M. López-Ochoa ◽  
Jesús Las-Heras-Casas ◽  
Luis M. López-González ◽  
César García-Lozano
Keyword(s):  
European Union ◽  
Thermal Insulation ◽  
Life Cycle Cost ◽  
Residential Buildings ◽  
Cold Climate ◽  
The European Union ◽  
Zero Energy ◽  
Climate Zones ◽  
Heating And Cooling ◽  
Zero Energy Buildings

The residential sector of the European Union consumes 27% of the final energy of the European Union, and approximately two-thirds of the existing dwellings in the European Union were built before 1980. For this reason, the European Union aims to transform the existing residential building stock into nearly zero-energy buildings by 2050 through energy renovation. The most effective method to achieve this goal is to increase the thermal insulation of opaque elements of the thermal envelope. This study aims to assess the energy, environmental and economic impacts of the energy renovation of the thermal envelopes that are typical of the existing multi-family buildings of the 26 provincial capitals in the cold climate zones of Spain. To achieve this goal, the insulation thickness to be added to the walls, roof and first floor framework is optimized by a life cycle cost analysis, and the existing building openings are replaced, thus minimizing both the total heating costs and the total heating and cooling costs. The study uses four thermal insulation materials for four different heating and cooling systems in 10 different models. The results obtained will be used to propose energy renovation solutions to achieve nearly zero-energy buildings both in Spain and in similar Mediterranean climate zones.

scholarly journals Trends of Energy Performance Certification of Buildings in Azerbaijan

2018 ◽  
Vol 7 (3.2) ◽  
pp. 563
Author(s):  
Samira Akbarova ◽  
. .
Keyword(s):  
European Union ◽  
Energy Consumption ◽  
Energy Saving ◽  
Energy Performance ◽  
Building Codes ◽  
Construction Sector ◽  
The European Union ◽  
Certification System ◽  
Energy Auditing ◽  
World Trend

Energy consumption by construction sector is estimated by multi- disciplinary energy auditing and results are represented in an energy performance building certificate. The building certification, which is a world trend today, is applied successfully for many buildings  inAzerbaijantoo. The purpose of this paper to study the current methodology of energy building certification in terms of the technological aspects of energy auditing. Many documents of the European Union directives and Russian building codes and regulations in the field of ecology and energy saving in construction sector have been revised for implementing them as base for national energy performance certification system AZERI GREEN ZOOM. The assessment categories and main requirements have been considered. The results of this overview have shown the trends and problems in this field.  There are given examples of certified buildings.  

scholarly journals Connectivity in the Western Balkans Region - Difficulties, Challenges and Alternatives

2021 ◽  
Vol 120 ◽  
pp. 01013
Author(s):  
Stanislav Stanev
Keyword(s):  
European Union ◽  
Economic Development ◽  
Foreign Policy ◽  
Significant Part ◽  
The European Union ◽  
Western Balkans ◽  
The Republic ◽  
Policy Priority ◽  
Alternative Solutions ◽  
The Eu

The countries of the Western Balkans have declared their foreign policy priority membership not only in NATO but also in the European Union. Achieving these goals is associated with overcoming many challenges of different nature. Although not directly related to the country's de facto membership of the EU, its infrastructure and the level of its connection with its neighbors raises many of the issues important to society and forms many of its immediate priorities. Difficulties in interconnectedness between countries can have both a political and a geographical basis. In this regard, a serious challenge for the Republic of Northern Macedonia is the level of connection with its eastern and western neighbors. Almost 30 years after the declaration of independence, the infrastructure continues to follow the realities set and realized by Socialist Yugoslavia. This in turn poses many difficulties for the economic development of the whole region. A significant part of the reasons for the lack of progress are also due to purely geographical reasons, but alternative solutions can be sought to overcome the backlog in connectivity.

scholarly journals European Union Energy Saving Policy

2014 ◽  
pp. 109-115
Author(s):  
N. Y. Kaveshnikov
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Energy Saving ◽  
Information Dissemination ◽  
Action Plan ◽  
The European Union ◽  
Technical Standards ◽  
Eu Policy ◽  
Increase Energy Efficiency ◽  
The Eu

This article analyses methods of energy efficiency stimulation in the European Union. The author investigates basic areas of the EU activity; in particular, the author estimates results of implementation of the Energy Star program, new provisions of labeling of energy-using products, measures to increase energy efficiency in buildings. The paper also analyzes the provisions of the Directive 2012/27 that is the first EU document, providing for a comprehensive approach to energy saving at all stages: production, transformation and consumption. Today EU policy includes: 7) a general political and regulatory framework laid down by the European action plan on energy efficiency and Directive 2012/27; 2) national action plans on energy efficiency, which should be in line with indicative targets set at the EU level; 3) special EU documents in key areas of energy efficiency (buildings, energy-consuming equipment etc.); 4) accompanying instruments, such as target funding, information dissemination, support of specialized networks. The paper gives a comprehensive analysis of the key methods of implementation of EU policy in the area of energy saving. The author concludes that EU operates within the framework of the open method of coordination. The system of mandatory/voluntary technical standards has allowed to achieve significant success, but indicative planning and monitoring of national actions are not completely effective. In the long term EU policy in the area of energy efficiency is restrained by member states unwillingness to delegate to the European Union a more detailed powers in this field and to give the EU bodies facilities to execute more strict control. In the short term - in conditions of economic crisis, the EU countries are not ready to invest significant budget funds in projects with long payback period.

scholarly journals Obtaining of heat-insulating materials based on silica-containing waste with the addition of dolomite

2020 ◽  
Vol 17 (6) ◽  
pp. 149-155
Author(s):  
N. K. Manakova ◽  
◽  
O. V. Suvorova ◽  
Keyword(s):  
Thermal Conductivity ◽  
Porous Structure ◽  
Silica Fume ◽  
Thermal Insulation ◽  
Silicate Matrix ◽  
High Quality ◽  
Insulating Materials ◽  
Insulation Materials ◽  
Preliminary Activation ◽  
Technical Properties

The paper presents the results of the study of feasibility of obtaining high-quality foamed thermal insulation materials based on a silicate matrix with addition of dolomite. It has been found out that the preliminary activation of a suspension based on a silica-containing component at a temperature of 90°C for 5-7 minutes allows accelerating the coagulation of silica fume and the synthesis of sodium silicates. Optimal foaming conditions for the charge frothing are 650-700°C for 25 minutes. There have been obtained foam silicates with a relatively uniform finely porous structure and stable physical and technical properties with density 0.38-0.48 g/cm³, strength up to 3 MPa, thermal conductivity 0.048-0.054 W/(m·K).

scholarly journals Perspectives and Problems of Harmonizing Energy Legislation of Ukraine with the European Union Standards

ECONOMICS ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 33-46
Author(s):  
Komelina Olha Volodymyrivna ◽  
Shcherbinina Svitlana Adamivna
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Resources ◽  
Energy Market ◽  
The European Union ◽  
The Eu

Summary Essence, features and components of the energy market was investigated in the article. Regulatory support of energy efficiency and energy saving in the European Union and Ukraine was analyzed. Ukraine obligations due to the harmonization of the energy legislation with the EU standards were defined. Problems in the housing and communal services (HCS) as one of the largest consumers of energy resources were revealed.

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