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Energetika
Archiv článků od 13.2.2012 do 6.6.2012

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6.6.2012
Ing. Bronislav Bechník, Ph.D.

Greenpeace International, in collaboration with the European Renewable Energy Council (EREC) prepared a plan for future energy development across the EU. The proposal is aimed at minimizing the energy dependence on unstable regions in particular. The core concept of energy by Greenpeace and EREC is to maximize the effective use of primary energy sources. For this reason, it is anticipated a gradual increase in the share of renewable sources.

28.5.2012
Ing. Jiří Horák, Ph.D., Ing. Petr Kubesa

According to the results of tests of the Research Energy Centre Technical University Ostrava, each operator of combustion plant can partially affect emissions. For older boilers it is better to give a smaller dose of fuel more often. After adding the fuel it is better to let it burn up, not close the inlets for combustion air.

21.5.2012
Ing. Jiří Horák, Ph.D., Ing. Petr Kubesa

The essence of the combustion process is burning fuel. This is a phenomenon that the authors clearly and wittily likened to the relationship of man and woman. At the same time in the article they explain in detail the technical terminology such as calorific value, combustion heat, humidity of wooden fuel, and the efficiency of common and condensing boilers.

úspory elektrické energie
7.5.2012
Miroslav Haluza, Jan Macháček

At a European level a Directive of the European Parliament and Council 2010/31/EU on the energy performance of buildings (EPBD) has been released in 2010 whereas the main requirement is to reduce energy consumption in buildings (replacing 2002/91/EC). A set of European standards have been issued for its implementation, eg EN 15232 Energy performance of buildings - Impact of automation, control and management of buildings. In the Czech Republic the Directive was implemented by Act No. 406/2000 Coll. energy management and decree 148/2007 on the energy performance of buildings. The current global trend is characterized by promoting energy efficient technologies. The aim of this work is to summarize domestic household consumption, it´s prediction and analysis of potential energy savings by using the wiring system (BACS).

30.4.2012
Jan Hodač, Mgr. Petr Strejček, Ph.D. MBA

Energy Charter now has 53 members, non-European countries in Energy Charter are Australia, Japan, Kazakhstan and Uzbekistan. European Union in the Charter is represented by the European Community and Euratom. There are also 24 observer countries (eg Canada, Iran, Nigeria, Qatar, USA and Venezuela) and 11 institutional observers.

udržitelný rozvoj
30.4.2012
Ing. Karel Bušta, Ing. Zdeněk Wagner, CSc.

The second part of the article describes new methods of utilisation of carbon dioxide, especially for accummulation of energy from renewable sources. Skepticism on the possibility of the carbon capture and storage is expressed too.

Energetické družstvo v Kalifornii
23.4.2012
Mgr. Jiří Zilvar, redakce

Birthplace of energy cooperatives is Scandinavia. Energy cooperatives are common in Germany too, they begin to pursue in Australia, USA, Canada, United Kingdom and other countries. In Denmark, cooperative ownership was a key factor of successful development of renewable energy in this country.

zemní plyn
16.4.2012
Mgr. Petr Strejček, Ph.D. MBA

The Russian Federation guarantees one-third of natural gas supply to the European Union. This share has to grow in the medium term to one half. But this is disputed by many critics, mainly because no newly opened bearings and no investment to new projects. What is the real state of the gas production in Russia?

Fotovoltaika na střeše kostela, Schoenau, E. Sequens
9.4.2012
Ing. Bronislav Bechník, Ph.D.

Christian churches use a slightly different terminology than the general population. Instead of protection of the environment they are talking about protection of God's creation. From their perspective, the topic is not ecological but theological. In the context of renewable energy sources social aspects are much more accented.

Vlastníci fotovoltaické elektrárny
26.3.2012
Mgr. Jiří Zilvar, redakce

Birthplace of energy cooperatives is Scandinavia. Energy cooperatives are common in Germany too, they begin to pursue in Australia, USA, Canada, United Kingdom and other countries. In Denmark, cooperative ownership was a key factor of successful development of renewable energy in this country.

19.3.2012
Ing. Milan Bechyně, redakce TZB-info

The amount of volume coefficient depends on elevation of location of gas consumption and the temperature of gas flowing through the gasometer. In this paper we describe the procedure by which you can check that the coefficient of volume on the invoice is correct. The coefficient is one of the factors that affect your cost of gas.

kotel
19.3.2012
Ing. Marek Baláš, Ph.D., Ing. Martin Lisý, Ph.D., Ing. Jiří Moskalík

The paper deals with basic separation of fuels and their classification on the basis of various points of view. There are mentioned descriptions of basic characteristics of fuels which are usually determined for standard fuels. Lastly, there are mentioned general parameters of the most widespread fuels and short description of incineration.

energetika paliva plyn pelety
19.3.2012
Ing. Bronislav Bechník, Ph.D.

At present, nobody knows how the energy future will look like. What is certain is that fossil resources can be depleted in the horizon of decades. Proven reserves of uranium – if the power consumption should be replaced by current reactors – would last for only a few years. There are only three promising energy technologies: nuclear fusion, fast breeder reactors with closed fuel cycle and renewable energy sources, along with energy efficiency. While commissioning of the first fusion power plant is expected the earliest by 2040, and demonstration plants with so-called generation IV reactors in 2030, renewable energy sources are already massively installed at present. Construction of nuclear power plant is always more expensive and takes more time than originally planned. Situation of renewables and especially photovoltaic is the reverse – they are built faster and the prices are lower than anyone imagined.

13.3.2012
Ing. Bronislav Bechník, Ph.D.

National Renewable Energy Action Plan of the Czech Republic sets national target for the share of energy from renewable sources by 2020 in electricity, heating and cooling and transport. Trajectory of interim targets is defined too.

Malá větrná elektrárna na střeše budovy
12.3.2012
Mgr. David Hanslian, Ústav fyziky atmosféry AV ČR, v.v.i.

Small wind turbines in comparison with large ones are usually applied at much lower altitudes, which correspond to the substantially lower wind speed. Wind speed at nominal power is achieved rarely or never. For estimation of energy production a dependence of power output on wind speed (performance curve) at lower wind speeds is substantial.

5.3.2012
Jan Dolenský

The article deals with the possibility of increasing of the energy production efficiency from photovoltaic plants. Input documentation was provided by PV power plant operator in South Moravia, from their installations up to 0.5 MWp. The article aims to analyze the possibilities of increasig operation efficiency, both in terms of technical design and optimization of already finished PV plants and comparation with real facts and economic factors.

20.2.2012
Ing. Bronislav Bechník, Ph.D.

The structure of electricity prices, focused on the history and the contribution of the support of electricity production from renewable energy sources, combined heat and power generation and secondary energy sources.

Chris Huhne na konferenci RenewableUK
13.2.2012
Chris Huhne

Secretary of State for Energy and Climate Change, Chris Huhne, proclaimed: "Renewable energy technologies will deliver a third industrial revolution." He criticised "faultfinders and curmudgeons who hold forth on the impossibility of renewables – the unholy alliance of climate sceptics and armchair engineers who are selling Britain’s ingenuity short."


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