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Archiv článků od 18.1.2016 do 27.6.2016

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20.6.2016
Mgr. Lukáš Rečka, Centrum pro otázky životního prostředí UK

The paper aims to discuss the issue of energy modelling and to introduce energy model TIMES-CZ as a new model from the TIMES model family. Internet application allowing individual analysis of impacts of prices changes and policy regulation on Czech energy system untill 2050.

6.6.2016
redakce

Problems fraudulent coal boilers included in EU subsidies for replacement of old boilers in the Czech Republic has already begun in a big deal in czech media. Czech Television aired May 30, 2016 report on substandard subsidized boiler and identified him as FD Automat by Slovak producer ATTACK, s.r.o.

30.5.2016
doc. RNDr. Jitka Kubátová, CSc., RNDr. Petr Pracna, CSc

Energy-efficient buildings research is one chapter of General Programme for Research and Innovation Horizont 2020 (2014 - 2020) which helps reaching the aims of european energy policy. First part of the article deals with characteristics of private-public partnership called Energy-efficient buildings (PPP EeB) that was founded for this purpose during previous General programme (2007 - 2013) and sums up projects PPP EeB supported in both programmes so far. Second part of the article deals with Czech participation in this programmes and describes topics of nearest Programme Hotizont calls for the year 2017.

23.5.2016
doc. RNDr. Jitka Kubátová, CSc., RNDr. Petr Pracna, CSc.

Energy-efficient buildings research is one chapter of General Programme for Research and Innovation Horizont 2020 (2014 - 2020) which helps reaching the aims of european energy policy. First part of the article deals with characteristics of private-public partnership called Energy-efficient buildings (PPP EeB) that was founded for this purpose during previous General programme (2007 - 2013) and sums up projects PPP EeB supported in both programmes so far. Second part of the article deals with Czech participation in this programmes and describes topics of nearest Programme Hotizont calls for the year 2017.

16.5.2016
Ing. Michal Lom, doc. Ing. Ondřej Přibyl, Ph.D.

The aim of the article is to provide several concrete solutions and applications of Smart Cities that are already being applied in the world and try to describe their contribution to urban residents. We focus on the first two of the six key areas of Smart City – Smart Government and Smart Transportation.

28.4.2016
Ing. Vladimír Stupavský, redakce TZB-info, Klastr Česká peleta

Europe is the world's largest producer of pellets. In 2014 there were produced 13.5 million tons of pellets, which is roughly 50 % of total world production. This production shows steady growth over several years with an average growth of 35 % between 2010–2013 and 11 % from 2013 to 2014. Production in the EU market caters mainly to heat market.

18.4.2016
doc. Ing. Tomáš Matuška, Ph.D., ČVUT v Praze, Univerzitní centrum energeticky efektivních budov

Ministry of Environment has proceeded to subsidize the simple ineffective PV systems for water heating in last call of support programme New Green for Savings. Paper analyses the final impact of this decision on the primary energy savings and associated emission production.

28.3.2016
Časopis Vytápění, větrání, instalace, Ing. Miroslav Urban, Ph.D., ČVUT v Praze, Fakulta stavební, Katedra technických zařízení budov, Ing. Martin Kny, ČVUT v Praze, Univerzitní centrum energeticky efektivních budov

The paper is targeting verification of the possibilities to utilize solar systems with long-term heat storage in residential buildings. Several ways are evaluated how to connect the long-term heat storage system with hot-water storage tank (system with and without use of heat pump, different ways of charging the storage tank, variants with stand-by storage tanks). Evaluation of the system is performed by TRNSYS simulation software.

13.3.2016
Ing. Vladimír Stupavský, redakce TZB-info, Klastr Česká peleta

The year 2015 brought another expansion step for international certification ENplus for wood pellets. Only ENplus certification covers over other certifications fuels the entire supply chain including production and distribution of pellets and certified ENplus pellets can be purchased only from ENplus certified producers and traders.

10.3.2016
Ing. Vladimír Stupavský, redakce TZB-info, Klastr Česká peleta

In 2015 was in the Czech Republic the impressive increase in production of wood pellets. This increase goes hand in hand with the currently running grant program for replacement of old boilers, where it is possible to get for an automatic pellet boiler 127.5 thousand CZK. The market and the public on the situation responded positively – in a segment of ecological boilers for biomass combustion occurs after years of rapid growth attenuation.

7.3.2016
Časopis Vytápění, větrání, instalace, doc. Ing. Tomáš Matuška, Ph.D., ČVUT v Praze, Univerzitní centrum energeticky efektivních budov

Calculation of electricity production by photovoltaic systems can be performed by more or less simplified approach. Monthly balance method allows to include the influence of the temperature and solar irradiance into the monthly production calculation with use of the PV module parameters available in the technical datasheet. Individual PV module technologies are compared by the balance method.

8.2.2016
Ing. Michal Lom, doc. Ing. Ondřej Přibyl, Ph.D.

First article from the Smart city series deals with occations for new urban conceptions, defines the Smart City idea and describes it from different points of view.

8.2.2016
Ing. David Borovský

The article descrtibes selected Solar District Heating implementation business models. Prezented cases are based on actual projects running across Europe.

8.2.2016
Ing. Michal Frank, Ing. Jan Gojný, Ph.D.

The article describes use of Miscanthus sinensis for a manufacturing of pulp. Miscanthus sinensis is a perennial plant, its cultivating is easy and it can be used for various purposes.
In the first phase of the pulp preparation from Miscanthus, a laboratory preparation of pulp was done at the University of Pardubice in total amount of 6 individual batches. In the second phase a selected laboratory batch was prepared in a pilot production process and ca. 2000 g of pulp in total was generated for further tests.
Mechanical properties and also other properties typical for pulp were determined on prepared samples. The produced pulp was used in the next step for a preparation of fibre-cement boards. Their basic physico-mechanical parameters were also determined.
After evaluation of all data that we have, production of 500 kg of pulp was done. Then the pulp was used to produce fibre-cement boards in a mass production.

25.1.2016
Ing. Václav Peer, Ing. Pavel Friedel

Article is dealing with gasification principles and gasifiers. Gasification is process for gas producing from solid fuels (coal, wastes, biomass). Producer gas can be used in cogeneration unit (piston engine or combustion turbine) for generating of heat and electricity with higher efficiency in comparison with combustion in boiler. All processes in gasifier taking place with regulated supply of gasification media (air, oxygen or steam) and reaction heat.

18.1.2016
Ing. Viacheslav Shemelin, doc. Ing. Tomáš Matuška, Ph.D.

The paper presents an analysis of main design parameters influence (width of the air gap between the absorber and the covering glazing, emissivity of the absorber and insulation thickness) on the thermal performance of solar collector. High-quality flat-plate solar collector was chosen as a reference variant. The aim of the analysis is to show, to what extent it is possible to modify these parameters towards cheaper collectors without significant reduction in energy quality of solar collector in operation.


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