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Archiv článků od 28.4.2014 do 27.10.2014

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27.10.2014
Ing. Marek Baláš, Ph.D., doc. Ing. Zdeněk Skála, CSc., Ing. Martin Lisý, Ph.D.

The issue of energy utilization of waste and the connected construction of new facilities is a very actual phenomena. The article addresses primary the trends of waste treatment and contemplates the option of energy utilization of waste from different perspectives. In a not insignificant part of the article is described the waste as a fuel, which means its composition and properties. This article is first from a prepared miniseries about waste.

27.10.2014
Mgr. Oldřich Sklenář

Waste water that ends up in the sewer network contains a large amount of energy. Utilization of this energy, which is also available throughout whole year, is not yet part of the standard engineering practice in the Czech Republic. This article brings an inspiration in the form of experience from Austrian city of Amstetten, where was implemented a project, which is using combination of a sewage heat exchanger and a heat pump. State of the art as the same as the factors affecting the utilization of waste heat are also included.

23.10.2014
Ing. Bronislav Bechník, Ph.D.

The original text and translation of the statement of the World Bank. Seventy-three countries, 22 subnational jurisdictions, and more than 1,000 companies and investors expressed support for a price on carbon ahead of the UN Secretary-General’s Climate Summit.

20.10.2014
Ing. Pavel Sláma

The article, with its theme of gear just beginning to cell cycle at a relatively broad topic of “thermodynamic phenomena in the pipeline and its surroundings”, describes the current situation in the field of pipeline networks and in the field of energy related equipment, determining the operating condition of the whole heating systems. This is essentially a search condition and trends of modern heating, working as using conventional manufacturing processes, as well as the application of engineering principles and methods in the field of far less obvious. This two-part article, articles and downstream, is also setting research targets thermodynamic and hydraulic phenomena in pipes and in its vicinity, which gradually obtaining knowledge useful in practice, will be precisely processed using mathematical, mostly numerical, models.

20.10.2014
Ing. Jan Kozderka

While shale gas is being hyped as a green energy option, experience from USA shows that the dynamics of the industry is rather similar to a bubble. Europe has a different geology, its legislation is not ready and the technology itself has been shown to carry substantial risks for the environment and human health.

20.10.2014
Ing. Bronislav Bechník, Ph.D.

The highest representatives of more than 120 countries accepted the invitation to the UN Climate Summit 2014. In addition to these UN Secretary General Ban Ki-moon invited representatives of financial and commercial institutions and civil society. The aim was to encourage and accelerate climate action. Ban Ki-moon requested them to announce bold measures and actions to reduce emissions, strengthen climate resilience and mobilize political will towards meaningful legal agreement in 2015.
Representatives of Countries presented their statements, but only rarely there was mentioned a specific reduction in CO2 emissions. Generally it can be said that most states are willing to contribute to reducing CO2 emissions “appropriately”. The question is what this word means in their imagination.

13.10.2014
Ing. Pavel Sláma

The article, with its theme of gear just beginning to cell cycle at a relatively broad topic of “thermodynamic phenomena in the pipeline and its surroundings”, describes the current situation in the field of pipeline networks and in the field of energy related equipment, determining the operating condition of the whole heating systems. This is essentially a search condition and trends of modern heating, working as using conventional manufacturing processes, as well as the application of engineering principles and methods in the field of far less obvious. This two-part article, articles and downstream, is also setting research targets thermodynamic and hydraulic phenomena in pipes and in its vicinity, which gradually obtaining knowledge useful in practice, will be precisely processed using mathematical, mostly numerical, models.

6.10.2014
Ing. Jan Blažíček, redakce

District Heating Association of the Czech Republic in late July issued a press release in which reacts to the latest proposal by the European Commission. According to the Commissioner for Energy Günther Oettinger, EC is going to order that EU Member States ensure without obligation energy savings equal to 30 % by 2030.

22.9.2014
Mgr. Jiří Zilvar, redakce

Existing lapses and mistakes during renewable energy sources development planning can be now avoided via unique program called RESTEP. RESTEP can easilly find available resources at given area and determine whether it is worthwhile to use them or not. Aim of this article is to introduce RESTEP, what it is good for, how does it work, who developes it and who will benefit from it.
Data needed for planning of energy use of RES are now available in one place through interactive map called RESTEP (regional sustainable energy policy). Authors describe RESTEP as RSA - regional source assessment. RESTEP recognizes what renewable energy soureces the selected location can offer, and then this potential derives a proposal of optimal mix of energy technologies. RESTEP is being developed at the Czech Agricultural University in Prague in cooperation with the Ministry of Environment and a number of other institutions.

1.9.2014
Jiří V. Ráž, DiS.

The article describes important new information about resolving the central heating. Heating is different from circulating water supply by solving transmission capability of pipe networks and by solving the power control. The article deals with the first of real heating characteristics – transmission capability of isolated and non-isolated pipe networks.

1.9.2014
Ing. Bronislav Bechník, Ph.D.

The history of photovoltaic begins with the discovery of the photoelectric effect in 1839 and later the photovoltaic effect in 1876. Practical application of photovoltaics came a century later, the earliest for power supply of satellites in 1958.
Turbulent development of the field followed, accompanied by the rapid decline in prices and increase of energy efficiency.

těžba břidlicového plynu
18.8.2014
Mgr. Petr Strejček, Ph.D. MBA

While the Czech Republic has imposed "moratorium" on offshore oil or natural gas from shale, the world is slowly unconventional method of production starts. Text describes and explains the process of "shale revolution" in the USA and compares the approaches to the same method of mining in several world regions and states. The author intends text and fulfillment of the conditions for the export options "shale commodities" globally and the implications of the massive expansion of exports of unconventional gas and oil.

4.8.2014
doc. Ing. Jan Fiedler, Dr.

The paper discusses current serious problem of district heating systems (DHS) – disconnecting of individual users and consequent threat of a possible entire heating system collapse in the given locality. Realistic alternatives to the DHS could be heat pumps as individual heat sources. Reasons, advantages and disadvantages of heat pumps in comparison to the DHS are presented in the paper.

Plynový kotel
7.7.2014
Ing. Jan Blažíček, redakce

Year 2013 was important in terms of sales of heat sources in the Czech Republic, because the long-awaited change came after years in the sign of declining demand. Sales of manufacturers grew significantly, as it documents the evaluation of the data obtained from the Association of heating technology (APTT) and the Ministry of Industry and Trade (MPO).

30.6.2014
Ing. Matěj Černý, Fakulta životního prostředí, Česká zemědělská univerzita v Praze; PROGEO, s.r.o.

Surplus energy can be stored in the form of sensible heat. The present concept utilizes rock material and a thermally conductive geopolymer to construct the thermal energy storage with working temperatures up to 400 ° C. The paper describes a model evaluation of the performance impact of selected storage materials.

16.6.2014
Ing. Martin Kny, Ing. Miroslav Urban, Ph.D.

This paper is focused on hot water tanks for long-term heat storage. Describes the design of the tanks and and their properties. The evaluation of tanks is based on the results of real systems. Tanks are mainly used for solar systems with long-term heat storage. The use of solar systems with long-term heat storage for building opens new possibilities for further savings of energy from non-renewable sources.

12.5.2014
Mgr. Jiří Zilvar, redakce

Although more and more people in the Czech republic understand the principle of net metering, only a minority understands it's purpose as well. Due to Czech negative experience with uncorrected feed-in tariff is any other renewable energy support viewed with suspicion and scepticism. The article explains the purpose of net metering as non-financial mechanism of renewable energy support - what is it good for, what we can expect from it, who will benefit from it and who will carry the costs.

dřevěné pelety
5.5.2014
Ing. Vladimír Stupavský, redakce TZB-info, Klastr Česká peleta

This article assesses the subject of modern and efficient ways of using energy from wood that has been widely discussed within the scientific lectures on fair TECHAGRO and BIOMASS 2014. The author outlines the development of the cross-section of the use of wood fuels from forest management in the context of the application of forest logging residues, or sawdust from wood processing industry in the energy sector in the Czech Republic.

energetický štítek budovy
28.4.2014
Ing. Vladimír Galád

Reducing the energy performance of buildings is very important. Equally important, however, is also the correct evaluation of energy savings. In practice, we meet with different approaches to the evaluation of energy efficiency, while some of them are far away from objectivity. This group also includes so called Energy League.

uhlí
28.4.2014
MUDr. Magdaléna Zimová, CSc., Ing. Anna Cidlinová, MUDr. Jan Melicherčík, CSc., prof. Ing. Zdeňka Wittlingerová, CSc.

Power industry is one of the greatest producers of waste. The character of waste products from the power industry is quite different from waste arising from the other industrial sectors as concerns its composition, methods of removal and possibilities of use. There has been revealed within the solution of the project “The Resort Research Program in the Force of the Ministry of Environment” ref. no. SP2f3/118/08, bearing the name “the research of real properties of waste considered as an acceptable source of non-standard raw-materials (particularly the secondary by-products from the energy generation) in sense of actual legal requirements for the protection of health, environment and the evaluation of the acquired information for the determination of safety processes and requirements for their use”, that products used for the landscaping, in certain events do not fulfill requirements stipulated for the utilization of waste on the ground surface. It means that construction products made from remainders after the coal burning, being sold as safe, can contaminate the environment more than waste used for the same purpose.


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