The paper describes the importance of monitoring the dust in the atmosphere of human life. It deals with the issue of dust in air ducts, approaching the methods that can be used to detect the amount of dust. For conditions for buildings in the Czech Republic there is created the methodology of quantitative and qualitative evaluation of dust sediment for the needs of HVAC and other building surfaces. The scale for visual evaluation was created and it has been elaborated the assessment of kind of particles contained in dust.

This article deals with the modelling of a small domestic solar collector array using Transient System Simulation Tool. The model was developed using meteorological data included as part of the Transient System Simulation Tool , mean regional data and actual meteorological data collected near the site of the solar array during testing. The main aim of this study was to compare the results of model simulations using the different types of meteorological data. The most accurate simulation was that prepared using meteorological data collected near the site of the solar array. Even here, however, differences were observed due to the equipment used to monitor heat gain, that is earlier insolation of the meteorological station.

The paper describes the importance of monitoring the dust in the atmosphere of human life. It deals with the issue of dust in air ducts, approaching the methods that can be used to detect the amount of dust. For conditions for buildings in the Czech Republic there is created the methodology of quantitative and qualitative evaluation of dust sediment for the needs of HVAC and other building surfaces. The scale for visual evaluation was created and it has been elaborated the assessment of kind of particles contained in dust.