DETERMINATION AERODYNAMIC CHARACTERISTICS OF ELEMENTS OF BUILDING VENTILATION SYSTEMS IN LABORATORY CONDITIONS

The article presents the layout and appearance of the stand, developed to determine the aerodynamic characteristics of the elements of ventilation systems. The technique of determining the aerodynamic characteristics of ventilation elements using the developed stand is considered. The results of tests of a check valve used in natural ventilation systems of buildings are presented. The obtained characteristic of the check valve is proposed to be used in calculating and predicting the operation of ventilation systems in buildings in which the check valves under consideration will be installed

IDENTIFICATION OF INTERHARMONICS BASED ON WAVELET PACKET TRANSFORM

This paper deals with the analysis of interharmonics, which are due to the presence of a nonlinear load. The tool for the analysis was a mathematical apparatus - wavelet packet transform. Which has a number of advantages over the traditional Fourier transform. A simulation model was developed in Simulink to simulate a non-stationary non-sinusoidal mode. The use of the wavelet packet transform will allow to determine the mode parameters with high accuracy from the obtained wavelet coefficients. It also makes it possible to obtain information, both in the frequency domain of the signal and in the time domain.

DESIGNING ENVIRONMENTAL MEASURES TO REDUCE FERRIC OXIDE AT A MACHINE-BUILDING ENTERPRISE

In this paper, we consider air pollution in the result of the activity of an economic entity. The classification of harmful emissions by aggregate state is given. The sources of negative impact on the atmospheric air, including the volume and mass of the resulting pollutants, are considered. It is proposed to develop a conservation measure by using a bag filter with pulse blowing.

THERMAL NEUTRALIZATION OF CARBON-CONTAINING SLUDGE

Acid tar is a resinous substance, which in most cases has a viscous structure. They are obtained as a result of sulfuric acid purification of petroleum distillates, oil residues, in the production of sulfonate additives, in the sulfonation and purification of oils, paraffins, kerosene and gas oil fractions and other petroleum products from aromatic hydrocarbons. Until recently, this type of waste was temporarily accumulated in specially designated areas - acid tar storage ponds, which were located near the oil refinery, which had a significant impact on the environment. The paper considers the process of formation of acid tar on the example of the production of sulfonate additives. The composition of the mixture of acid tar and sulfonate sludge was evaluated, and the hazard class of this type of waste was determined. Methods of utilization of acid tar are studied and a method of utilization of acid tar for the considered production is proposed.

INTERACTION OF A LOW POWER HYDROGEN FUEL CELL WITH A NI-MH BATTERY

The purpose of this article is to investigate a simplified simulation model of the joint operation of a hydrogen fuel cell and a nickel-metal hydride battery. A suitable mathematical model of the fuel cell was selected. A simplified simulation model is designed in the MATLAB package. The graphs of the dependences of voltage, current, power on the fuel cell and load are obtained. In addition, a graph of the degree of discharge is obtained on the battery. As a result of the study, it was determined that at low power it is possible to use the proposed model.

APPLICATION OF THE CARNOL PROCESS TO PRODUCE METHANOL AND REDUCE CARBON DIOXIDE EMISSIONS

The Carnol system is the production of methanol from carbon dioxide (obtained from coal-fired power plants) and natural gas, and the use of the resulting methanol as an alternative fuel. The Carnol process produces hydrogen by thermal decomposition of natural gas, which then interacts with the CO2 extracted from the flue emissions of power plants. The resulting carbon can be stored or used as a raw material. The paper provides an estimated characteristic of the reduction of CO2 emissions of the Carnol process and system, and compares it with other traditional methanol production processes, including the use of biomass of industrial raw materials and vehicles powered by methanol fuel cells. CO2 emissions from a Carnol system that uses methanol as an alternative fuel can be reduced by 56 % compared to a conventional coal-fired power plant system. In the case of the use of methanol as fuel for motor vehicles, carbon dioxide emissions.

BIOINDICATION OF THE AIR ENVIRONMENT OF THE CITY OF OMSK ACCORDING TO A STUDY OF PINUS SYLVESTRIS

The problem of air pollution of the city is still relevant today. A significant increase of emissions of pollutants from the activities of industrial plants, road transport has a negative impact on the quality of atmospheric air and the environment as a whole, the health of the population. The main objective of this research is to assessment of the state of the air environment, by studying of pinus sylvestris needles, growing on the territory of the city of Omsk. For research of the state of the atmospheric air were chosen 5 key sections in the city of Omsk, where we selected samples of needles. It was found, that the severity of damage and drying of needles is uneven on all key sections, depends on the level of air pollution. An assessment of the state of the air environment was carried out, which showed, that on the territory of the Soviet park and ave. of the Culture (sections 1 and 2, respectively) relatively clean air "norm" was established, according to the third level of pollution. Cathedral square and st. Irtyshskaya embankment (sections 3 and 5, respectively) are characterized by dirty air «harmful», according to the sixth level of pollution.

METHODS OF WATER PURIFICATION AT THE STAGE OF WATER TREATMENT FOR FEEDING BOILERS AND THEIR OWN TECHNOLOGICAL NEEDS AT THE PLANT CHPP

This work consists of the characteristics of production, assessment of the qualitative and quantitative composition of water, consideration of the process of water purification in the chemical shop, comparison and selection of coagulants and flocculants, and demonstration of the most affordable technology used at the CHPP which increases the efficiency of source water purification. The problem of pretreatment of the source water has always been relevant. The quality of the water used depends on the operation of boilers and turbines at the CHPP. The paper presents the average annual indicators of the quality of the source water, pre-treatment methods, and considers which reagents that do not require the cost of reconstruction of clarifiers can improve their performance. The initial water after the application of the test samples of coagulants and flocculants was studied. Conclusions are drawn about the work of clarifiers after the use of the proposed reagents.

ECOLOGICAL AND ECONOMICAL PROOF OF SOIL'S RECULTIVATION CONTAMINATED BY OIL BY BIOTECHNOLOGICAL METHOD

The biotechnological method of utilization of harmful hydrocarbon compounds from industrial contaminated soils has been studied, the fruitful influence of environmental protection measures - biopurification of oil-contaminated soil using Dendrobena Veneta vermicultures and using biological products: Batsilosorbat, Samotlor, Lumbrikus, Eisenia ". The positive effect of reducing the concentration of oil in samples to 90.58% has been experimentally confirmed. An ecological and economic analysis of the advantages of using reclamation of contaminated soil by a biotechnological method has been carried out.

ANALYSIS OF METHODS FOR CLEANING CONDENSATION PLANTS

The purpose of this article is to analyze the literature sources for the study of the influence of biological deposits on the contamination of pipes of the condensing plant of JSC Nizhnevartovsk state district power plant and, as a result, to analyze cost-effective ways to improve the efficiency of the condensing plant. The objectives of the study are to choose the most energy-efficient method for cleaning capacitors. In conclusion, the conclusions about the methods of cleaning are presented.