The author in his article deals with the problem areas in current legislation on the issue of flue gas from appliances - category C. The first part focuses mainly on the definition of the flue gas path and the required actions arising from it.

This paper describes the brief overview of field devices used in heating, ventilation, airconditioning and cooling. The description of sensors, switches, valves, actuators and frequency inverters was presented in detail.

In relation with the present discussions on the use of solar energy it is useful to mention one important stage of Czech agriculture - the production of really high-quality roughage. Besides the development of methods of silage and haylage, thirty years ago the researchers looked at final drying of forage in large-scale haylofts using air solar collectors.

The paper deals with identifying suitable areas of use of small cogeneration units fossil fuels and renewable energy sources in municipal and industrial uses. Discusses the advantages and disadvantages of cogeneration units based on internal combustion engines, gas turbines and steam engines, including their position in the electricity grid

The following article is an excerpt of information from the Czech standard CSN 73 4201 Chimneys and connecting flue pipes - Design, construction and instalation of heatings appliances - about designing single-layer chimney, multilayer chimney, pressurized and high pressurized chimneys, chimney and air vents.

The following article is an excerpt of information from the Czech standard CSN 73 4201 Chimneys and connecting flue pipes - Design, construction and instalation of heatings appliances about flue gas path designing, connecting flue pipes designing and heatings appliances installation.

Growing Rumex OK 2 - feed sorrel - is by VÚRV Ruzyne engaged for nearly 20 years. Initially the Rumex was observed in experiments later in the field conditions. The oldest stand of the Rumex is twelve years old (2011), grown on an area of 20 hectares.

Construction of the wall is the basic parameter of chimney, which must meet the thermal and technical properties, hydraulic requirements, fire and safety requirements and requirements for mechanical properties depending on the parameters of flue gas and the surroundings of the chimney.

The Professional medical institute in Žamberk is one of the objects in the region of Pardubice in the Czech republic, where the energy performance contracting method was applicated. By implementing energy-saving project the central steam boiler was closed and a new gas boiler (power 1690 kW) was built in the building of the existing heat exchangers.

The paper presents the basic overview of programming tools and graphical centrals used in building automation systems. The paper describes the main functionalities and implementations of software tools in muilding management systems.

Nowadays there is a growing interest in quality and high energy saving housing. The following article presents the almost unusual renovation of a terraced building in Denmark. It was expected that after the renovation the building with become CO₂ neutral. The last house of a terrace in the twon of Albertslund, Denmakr was chosen for the renovation. It had been built in the 1960's and it is a two story terraced house with a 50m² footprint.

Article provides detailed information about long-term tests of heat pumps „HP efficiency“, made by the agency Frauhofer ISE. It monitored the effectiveness of the use of heat pump air-water and ground-water in the low-energy houses.

In January I published an article about the upcoming revision of CSN 73 0540-2 Thermal protection of buildings, Part 2: Requirements. I expressed to changes in each individual chapter. Since then there is new development in the standard revision. Some comments by members of the Standardisation Committee No. 43 and by professionals from the April public consultation of the standard were implemented. Some chapters of the standard are nearly unchanged since January, but some have changed in fairly major way.

This paper describes the brief analysis of the quality of heat pumps offered in the Czech Republic. It specifies the importance of improving offer based on the evaluation of heat pumps according to the methodology of the European Heat Pumps Association (EHPA).This also includes the basic conditions for awarding the quality of the European Quality Label for Heat Pumps.

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.

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.

National Renewable Energy Action Plans (NREAP) of each EU countries in graphical and tabelar forms. Part three - final energy consumption for heating and cooling and share of RES on the consumption for heting and cooling.