Room height and the risk of condensation affect radiant cooling performance. Correction factors are determined for freely suspended radiant panels depending on the height and temperature gradient of the air. At a height of 14 m and a gradient of 0.5 K / m, the total cooling capacity is up to 40% higher than the table.

The article deals with the effect of the indoor air temperature attenuation during intermittent heating on the energy consumption and the quality of the indoor environment in an existing office building with electric direct heating system.

This study was focused on the observation of a brick chimney with an isostatic liner, intended for the removal of flue gases from a combustion plant of low heat output burning solid fuels, with regard to the occurrence of condensation.

The cause of the odor after the generational replacement of the gas boiler can be reduced air exchange in the room, improperly designed waste pipes, or even insufficient hygiene. The level of cleaning and hygiene is solved by the apartment user. Sufficient ventilation and treatment of the waste pipe, such as the installation of an aeration valve, should be designed by a person skilled in the art.

By optimally distributing the active areas of the ceiling cooling, its performance can be increased. Performance changes in several variants were verified, for example when dividing the integral cooling surface into several smaller ones, when exposing the ceiling flap or a structure in the form of lamellas suspended under the ceiling. Performance differences are significant, in the tens of percent, which designers should take into account by optimizing the design.

The author points out the potential for savings in heating, etc. in public buildings and the potential dangers arising from inappropriately chosen scenarios. The risk factor is in particular the “lock-in effect”, which causes the failure to use all the possibilities to reduce the energy consumption that exists.

The subject of the research is a ventilation unit with a heat pump providing vacuum ventilation in a specific family house. The year-round energy balance of the operation was prepared from the obtained parameters. For a total heat loss of 5 kW, the seasonal heating factor SPF of the entire system was evaluated at the level of 2.5.

The article shows part of the evaluation of the energy performance of a large building according to CSN EN 15316-2: 2018 and especially how the advantage of different methods of heating changes with the height of the building. It also includes a more detailed specification of some of the descriptions in the standard of ambiguous inputs.

The authors describe the legislative requirements for ventilation and their possible technical solution. The mathematical model of the family house is used to evaluate the technical solutions of ventilation according to energy intensity. It is based on the economic evaluation of variants.

The authors describe legislative requirements for ventilation and their possible technical solution. The mathematical model of the family house is used to evaluate the technical solutions of ventilation according to energy intensity. It is based on the economic evaluation of variants.

The disadvantage of the family one-storey bungalow is the larger built-up area and the cooled envelope and thus higher specific heat consumption for heating compared to a compact two-storey house. The author offers a comparison of variants of bungalow heating by Total cost of ownership (TCO) method in Slovak conditions.

Achieving the criteria set for effectively district heating will be a precondition for the development of central heat supply in the coming period. Heating companies are therefore looking for suitable alternative solutions. In this paper it is the view of the designer on a concrete example of the combination of the use of geothermal water and CHP.

Based on the yearly operation of a specific device recovering heat from waste water discharged into the sewerage system for hot water preparation, the author documents the true potential of energy savings.

Is it advantageous to apply zone regulation in individual rooms, especially in family houses? The paper describes results of analysis of the effect of zone heating in two different types of heat transfer on the internal operating temperature in the analyzed zones, which have a common partition structure.