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Archiv článků od 17.1.2011 do 23.5.2011

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23.5.2011
Ing. arch. Vladimír Balda

Our serial continues with this low-energy house built with sand-lime bricks. This time, the family house is located not far from Liberec, in the foothills of the Jizera mountains. The surroundings, predominantly rural houses near a protected natural area, influenced the shape of the house. Its location responds primarily to the surrounding buildings and the slightly sloping land.

16.5.2011
J.V.Ráž, DiS.

The article is intended for designers and network operators and aim to help to easily design thermal insulation, without worrying about European regulations and easily realise the insulation design, without lengthy and, in the case of heat transfer coefficients, unnecessary calculations.

27.4.2011
Ing. Bronislav Bechník, Ph.D., Czech RE Agency, o. p. s., Czech RE Agency, o. p. s.

The European Solar Days successfully promote the use of a free unlimited renewable energy source available everywhere to everyone to generate electricity as well as heating and cooling: the SUN.
This campaign raises public awareness and involves several hundred thousand citizens at local level. Pioneer countries such as Austria, Germany, Switzerland, as well as others that successfully embraced this initiative like France, Italy and Spain, are only too keen to share their experience and help spread the word. The European Solar Days are celebrated in an increasing number of countries and in 2010 around 6.600 events were planned in 17 European countries by diverse organisations ranging from solar equipment manufacturers to schools and local authorities.

18.4.2011
Ing. Pavla Zavoralová

The article introduces the basic requirements for properties of materials using phase change in construction. These substances are known as PCM. Furthermore, the article deals with the possible chemical composition of the PCM, the advantages and disadvantages of phase transitions.

18.4.2011
Ing. Jiří Buchta, CSc., předseda sekce plyn ČSTZ soudní znalec - technické obory různé se specializací plynové zařízení (topné a technické plyny), CTI ČR

A usual cause of failures and accidents with gas appliances is their use even though service or installation companies have shut them down or the user has been forbidden to operate them any further until their removal.

11.4.2011
Jaroslav Valter

Article is based on the book "Regulating the practice or how I'm doing." Programming of the control system is described in a logical sequence so as to be applicable to various systems. The intention was to create a "helper in his pocket" for designers, programmers, and assembly techniques of measurement and control.

11.4.2011
Ing. Dalibor Skácel, Katedra energetických zařízení - TU Liberec

European and national policy and trends promoting the development and use of renewable energy recently caused a boom for solar systems for DHW and heating in family houses in this country. Whether it makes sense, what are the problems for such systems since we can expect and how to optimize these systems, this post.

4.4.2011
Ing. Jiří Buchta, CSc., předseda sekce plyn ČSTZ soudní znalec - technické obory různé se specializací plynové zařízení (topné a technické plyny), CTI ČR

The author deals with the consequences of failure to comply with the conditions for safe operation of gas appliances. In addition to project design and implementation pays attention to neglected maintenance of gas appliances in categories B and C.

21.3.2011
Ing. Ladislav Tintěra

The evaluation of the heating period for the calendar year 2010 is useful for producers and consumers, who work on a January-December regime. It also provides data to energy experts for assessing the operational energy consumption of buildings. It also provides figures for the controlling of boilers, according the Decree 276/2007 Coll.

14.3.2011
Ing. Petr Kotek, Ph.D., Miroslav Purkert, Lucie Šancová, Petr Vogel

The paper discusses the alternative heat sources to central district heating for panel buildings. Nowadays, most of the reconstructions of panel buildings cover only the improvement of thermal quality of the building envelope in order to decrease the heat loss and the operating costs of heating. With high-quality insulated envelope it is possible to achieve high reduction of thermal heat loss. Additional reduction of heat loss on the envelope insulation side is very expensive. In order to reach another reduction of operational costs in the building it could be more efficient to change the heat source with cheaper energy.

28.2.2011
Ing. Ladislav Tintěra

Based on the observations made at the Prague-Karlov station, the 2009/2010 heating season was a little shorter, 217 days, and the average temperature was 4.3ºC, slightly cooler than the long-term average. The basic characteristic necessary for heating is 3187 dº (19) degree days, so the needs for heating were slightly lower than the long term average.

21.2.2011
Ing. Jiří Buchta, CSc., předseda sekce plyn ČSTZ soudní znalec - technické obory různé se specializací plynové zařízení (topné a technické plyny), CTI ČR

On November 1st, 2010 the new CSN 73 4201 “Chimneys and flues. Design, implementation and connection of fuel appliances” came into force replacing the standard with the same title and number from January 2008.

14.2.2011
Ing. Petr Morávek, CSc.

Low energy (LEB) and passive buildings (PB) are becoming standard for new constructions in EU countries. They aren't experiments anymore, but absolutely ordinary mass production of sophisticated residential buildings. Only in Germany, Austria and Switzerland there are already thousands of buildings that meet the passive standard and their number doubles every year. The cost of passive buildings is only 5-7 % higher than those of conventional ones, and yet, their consumption of energy and heating is up to 90 % lower! Part 2. about regulation ventilation system.

14.2.2011
Ing. Jiří Buchta, CSc., předseda sekce plyn ČSTZ soudní znalec - technické obory různé se specializací plynové zařízení (topné a technické plyny), CTI ČR

On November 1st, 2010 the new CSN 73 4201 - Chimneys and flues. Design, implementation and connection of fuel appliances" came into force replacing the standard with the same title and number from January 2008.

7.2.2011
Jan Blažíček

The article deals with price comparing of the electric energy suppliers in the regions of the Czech Republic. The graphs in the example shows the difference of the prices for tariff rates D02d and D56d.

31.1.2011
Jan Blažíček, redakce

The article deals with price comparing of the natural gas suppliers in the regions of the Czech Republic. It is clearly shown in the graphs how to save financial costs with the change of the supplier of natural gas - from the expensive to the cheaper one.

31.1.2011
Ing. Petr Morávek, CSc., Atrea s.r.o.

Low energy (LEB) and passive buildings (PB) are becoming standard for new constructions in EU countries. They aren't experiments anymore, but absolutely ordinary mass production of sophisticated residential buildings. Only in Germany, Austria and Switzerland there are already thousands of buildings that meet the passive standard and their number doubles every year. The cost of passive buildings is only 5-7 % higher than those of conventional ones, and yet, their consumption of energy and heating is up to 90 % lower!

17.1.2011
RNDr. Jiří Svoboda, DSc., Ústav fyziky materiálů, Akademie věd ČR

Author raises discussion and proposed changes in the rules of the energy audit. Draws attention to the criteria for evaluating alternatives and to small requirements for variability solutions. Read controversy of the author and reviewer who considers the methodology as sufficient and sees a problem in processing audits.


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