Electrokinetic and Electroconductivity Properties of Filtering Material Aqualat

AbstractFor Aqualat filtering material, which is supposed to be used for electroadsorption post-treatment of waters, three methods of zeta-potential determining were applied: streaming potential method, microelectrophoresis and method implemented by Zetatrac analyzer. Besides, the conductive properties of the material were determined in a wide range of electrolyte concentrations

GIS technologies for selecting location of dams in the flood control systems

Many floodplains are excluded from development because the floods cause considerable damage to people’s lives and properties. Systems of hydraulic engineering structures for flood protection working with hydropower facilities are analysed to solve the problem of reducing the flood control volume of hydropower station. Methods of reducing the risk of flooding in the river basin by means of a distributed system of detention self-regulated dams are discussed. A geoinformation method used to justify the selection of parameters of such dams, primarily location of dam that minimize impact on the environment (ecological factor), is presented. In the present study, a system of multipurpose flood protection self-regulated dams is analysed as the measures for mitigation of flash floods in the Far Eastern region of Russia

Multicriterion control of operating conditions of hydraulic units of hydraulic power stations and hydroelectric pumped storage power plants

The investigation is concerned with the automated control of the internal conditions of hydraulic power stations and hydroelectric pumped storage power plants under conditions of process control systems. The purpose of the work is to develop the procedure for short-term and on-line control of hydraulic units under conditions of changing strategy of power station control depending on power and water management conditions and environment. The author has developed new procedures for short-term automated control of hydraulic unit conditions including the stages of analysis of the control object, selection of criteria corresponding to the operating situation and optimization of internal conditions. The author has developed the complex of applied programs for the process control subsystem on the basis of the algorithms of short-term and on-line control of hydraulic units using a complex criterion with due regard for environment limitations. The developed procedure has been introducedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Measuring the thermal resistance of typical multi-layer building walls using the accelerated measurement method

This paper considers the application of accelerated thermal resistance measurement to typical constructions of multi-layer walls of buildings with thermal insulation. It is shown that it is possible to reduce the measurement time considering the results of preliminary modelling. The required calculations for some typical constructions of building walls were made. The examples of simulation results shown in this paper allow to reduce the thermal resistance measurement time by 15-20%. There can be made calculations for other structures of building walls, following the presented method

Method of Hydrogenous Fuel Usage to Increase the Efficiency in Tandem Diverse Temperature Oxidation System

This paper presents the results of estimation energy efficiency, the collation data of thermodynamic calculations and data on material balance for an assessment of electric and thermal components in considered ways to use convention products, performance enhancement in the tandem system containing the high-temperature fuel cell and the low-temperature fuel cell with full heat regeneration for hydrogenous fuel (CH4). The overall effective efficiency (ηΣef. making full use of the recovered heat) considered tandem system depends on the efficiency of its constituent fuel cells. The overall effective efficiency of the tandem installation including the fuel converter, separating system, high-temperature oxidation system, and hydrogen disposal system in case of fuel use in the low-temperature fuel cell, is higher than for each of the fuel cell elements separately

Method of Hydrogenous Fuel Usage to Increase the Efficiency in Tandem Diverse Temperature Oxidation System

This paper presents the results of estimation energy efficiency, the collation data of thermodynamic calculations and data on material balance for an assessment of electric and thermal components in considered ways to use convention products, performance enhancement in the tandem system containing the high-temperature fuel cell and the low-temperature fuel cell with full heat regeneration for hydrogenous fuel (CH4). The overall effective efficiency (ηΣef. making full use of the recovered heat) considered tandem system depends on the efficiency of its constituent fuel cells. The overall effective efficiency of the tandem installation including the fuel converter, separating system, high-temperature oxidation system, and hydrogen disposal system in case of fuel use in the low-temperature fuel cell, is higher than for each of the fuel cell elements separately

Optimization of the Solid Waste Management System in Saint-Petersburg Based on the Morphological Composition Study

The article presents the results of research (2013-2017) on the seasonal morphological composition of Municipal Solid Waste and forecasting the waste generation volume for Saint Petersburg. The authors propose ways to improve the system of solid waste management in St. Petersburg based on these researches

Distributed System of Dams for Flood Protection of Urban Land to Ensure Sustainable Development

The article considers innovative materials and structures for multipurpose flood protection self-regulated dams. Russian and foreign experiences in flood consequence, as well as conceptions for protection of urban land in the context of climate change are analyzed. Method for flood protection is proposed and is proved by creation of distributed system of self-regulated flood-control distributed system of dams in a river basin

GIS technologies for selecting location of dams in the flood control systems

Many floodplains are excluded from development because the floods cause considerable damage to people’s lives and properties. Systems of hydraulic engineering structures for flood protection working with hydropower facilities are analysed to solve the problem of reducing the flood control volume of hydropower station. Methods of reducing the risk of flooding in the river basin by means of a distributed system of detention self-regulated dams are discussed. A geoinformation method used to justify the selection of parameters of such dams, primarily location of dam that minimize impact on the environment (ecological factor), is presented. In the present study, a system of multipurpose flood protection self-regulated dams is analysed as the measures for mitigation of flash floods in the Far Eastern region of Russia

Distributed System of Dams for Flood Protection of Urban Land to Ensure Sustainable Development

The article considers innovative materials and structures for multipurpose flood protection self-regulated dams. Russian and foreign experiences in flood consequence, as well as conceptions for protection of urban land in the context of climate change are analyzed. Method for flood protection is proposed and is proved by creation of distributed system of self-regulated flood-control distributed system of dams in a river basin