High concentrations of CO2 are one of the causes of imperfect oxygenation of the blood circulation in humans. An experimental measurement of a passive home during a simulated power outage was carried out from July 7-15th 2014. In the measured rooms (one with plants with leaves the size of one of the bigger participants in this project, the second room without any plants at all), the levels of CO2 were observed, as well as the levels of relative air humidity of the interior, and the interior temperature. The measurement was carried out at night, when sleeping time was simulated, i.e. the resting period. The impact of plants did not significantly influence the CO2 reduction in the interior of the building. Regular airing is necessary for maintaining the hygienic limit of the concentration of CO2. It is thus necessary to ensure this with the windows open during an unexpected power outage.
The main point of this article is the analysis of the plants influence on the indoor microclimate duality in the passive house, above all the influence on the CO2 concentration. The measurements were made in the experimental passive house in the area of the Faculty of Civil Engineering, VSB – Technical University of Ostrava in the spring months. The volumes of CO2 were analyzed during the many nights, in the room always with two men. In the first was made the measurement without the plants and then during the next measurements were added plants into the referential room which change the CO2 onto oxygen. During the separate measurements were changed quantities of the green parts (of plants) where the photosynthesis change the CO2 onto O2. In the second measurement was the blade area approximately equal to body area of the bigger participant and in the third measurement was the blade area approximately equal to sum of the bodies of both participants of the experiment.
The aim of this paper is the assessment of structures in terms of the lowest internal surface temperature. It assessed the risk of condensation of water vapor on the surface of these structures. This assessment will be conducted by probabilistic calculation based on data acquired in Vocational training center MSDK. Using this calculation will be found how many times during the year the internal surface temperature drops below the dew point on the inner surface of the structures.
Situation on insulation market, not only in Czech Republic, is confused for the general public. This paper tries to streamline this fact. Here are described more than 30 types of thermal insulations divided into 6 categories. Each category is detailed described by physical parameters and each is sequentially selected about 5, which are most frequently using like thermal insulation of the building's façade, without air gap. Elementary parameters, which are most important from investors view, are finances. Like a basic reference value was chosen thermal conductivity of insulation and for economical compare was chosen uniform thickness insulation on building envelope 100 mm. On the basis of these two values are insulation chosen. In this paper are results clearly graphically compiled.From graphs it is clear, that most of thermal insulation's values of thermal conductivity are very similar, bud prices of insulations can be usually substantially different. From this is evident, that some of insulation are so popular, because their producer have excellent marketing and promotion.
The paper is aimed at storing heat with gravel. During testing, we used various kinds of recycled aggregates, were studied their characteristics and suitability for ground heat storage. The most important feature is the specific heat capacity which was measured through own construction of the calorimeter. The construction of the calorimeter and measured results are summarized in this paper.
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