This article is devoted to the study of the effect of photocatalytic oxidation together with successive layers of sorbents (shungite, celite) on the efficiency of cleaning the supply air of premises from pollutants of motor vehicles. The studies were carried out with the help of a developed supply ventilation valve with air purification.

Keywords: intensity of ultraviolet radiation, shungite, zeolite, titanium dioxide, adsorption limit, supply air, ventilation valve

This article is devoted to the study of concentrations of carbon monoxide (II), phenol, formaldehyde, aliphatic hydrocarbons in the premises of buildings, including the assessment of the regularities of their vertical distribution in the height of buildings at different times of the day from vehicles. Research is necessary to develop a program for electronic computers, which is necessary for the design of construction projects.

Keywords: помещения, оксид углерода (II), фенол, формальдегид, углеводороды алифатические, здания, время суток

The equations of multiple regression of air quality from factors affecting external sources of emission in the urban environment are obtained. A prototype of a forced air supply ventilation valve with air purification, placed in the outer wall of the building, using various sorbents together with a photocatalytic filter (a thin porous plate coated with titanium dioxide next to two UV lamps, UV-A range, 365 nm, 6 W each) was developed. Full-scale studies of five options for purifying the supply air were carried out. High quality of outdoor air purification from pollutants has the following options: shungite; zeolite; silica gel; photocatalytic filter, its purification efficiency was 96.39-99.98% for carbon oxide (II), 96.39-97.89% for phenol, 95.76-97.78% for formaldehyde, and 93.97-95.12% for aliphatic hydrocarbons (C1-C5). The results obtained can be used in multi-storey construction.

Keywords: forced air supply valve, prototype, pollutants, sorbent, shungite, zeolite, silica gel, photocatalytic filter

One of the main sources of electromagnetic radiation in the environment are power lines, not taking into account this fact, there are increasingly cases of construction of buildings in close proximity to the boundaries of the security zones of air lines. The purpose of this study is to improve the electromagnetic safety of the population, as a result of the use in the construction of residential facilities located near overhead power lines, structural and finishing materials with the greatest shielding ability. On the example of "corrugated Board" of different brands, used as a shielding material, the indicators reflecting the efficiency of electromagnetic shielding are obtained. Also, according to the results of the study, it was found that not only the raw material from which the material is made plays a role in the shielding of the electric field, but also its form factor.

Keywords: electromagnetic radiation, electric field, security zone, shielding ability, voltage class, power line, material