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An important direction in the development of energy saving policy is harvesting and conversion into electricity of low-grade waste heat. The present paper is devoted to the improvement of the efficiency of thermo-electrochemical cells based on carbon fiber electrodes and potassium ferri-/ferrocyanide redox electrolyte. The influence of the carbon fiber electrode surface modification (magnetron deposition of silver and titanium or infiltration implantation of nanoscale titanium oxide) on the output power and parameters of the impedance equivalent scheme of a thermo-electrochemical cell has been studied. Two kinds of cell designs (a conventional electrochemical cell with a salt bridge and a coin cell-type body) were investigated. It was found that the nature of the surface modification of electrodes can change the internal resistance of the cell by three orders of magnitude. The dependence of the equivalent scheme parameters and output power density of the thermoelectric cell on the type of electrode materials was presented. It was observed that the maximum power for carbon fiber modified with titanium metal and titanium oxide was 25.2 mW/m2 and the efficiency was 1.37%.

The paper shows new approaches to the rational use of the urban area depending on the significant and technical features of the landscape (mouth of rivers, ravines) becoming the unique prerequisites for planning deep and spatial public-recreational urban areas created at the underground level. The issues of the analysis of the world and Russian experience in the underground urban planning are solved, the application of the ecological measures on the example of the experimental planning underground recreational spaces in Volgograd. Architectural and landscape planning rests on a hypothetic model of the underground spatial and recreational area with regard to the ravine relief. The research embrace landscape, architectural, ecological design of underground spatial and recreational urban spaces built on the peculiarities of the relief. The main techniques in the work became: the method of system approach; the analysis of design and scientific research in publication and regulation sources; modeling and experimental planning. The results of the work: some natural prerequisites have been revealed to organize public and recreational underground spaces the structure of which included the underground construction, an open landscape park zone and the space overlapped by contemporary envelopes and an exploited roof with planting. The planning is directed at the improvement of the ecological state of the environment, the provision of the efficient use of the territory, forming emotional expressive panoramas enhancing an aesthetic image of the city.

Urban planning is a critical issue in urban planning around the world. Real monitoring of landscape and environmental processes, urban planning and sustainable development designers associate with the construction of virtual models. The aim of the study is to develop methodological approaches to planning in the field of landscape and environmental sustainability taking into account the landscape features of the city of Volgograd and the formation of a topographic basis of a virtual model aimed at resolving environmental, social and figurative problems of the city. The construction of the landscape object of the Green ring in the suburban area of Volgograd and the environmental impact of the water surfaces of the Volga river on the sustainable development of the comfortable spaces of the city were analyzed. The modeling for the integration of a system of natural components of the landscape based on the climate aspect and the specifics of the topography in the virtual model of landscape ecological sustainable development the water-green landscapeology. The results of the study reveal the scientific and methodological provisions of urban planning and establish practical goals and implementation of virtual models aimed at preserving the true image of the city

The architectural and ecological model of civil engineering of socially oriented spaces of coastal landscape aimed at providing comfortable vital environment, development of the greatest possible variety of city activities, solution of environmental and social problems of the city, and development of the embankment as a self-valuable fragment of well-arranged natural landscape is substantiated. The research objective is the development of methodical bases for the process of architectural revitalization of postindustrial coastal landscape. The researchers utilize the methods of system analysis, reviewing of design practice, analysis of available scientific databases as well as referential and normative resources. The methods of modeling and experimental projecting were also used in the study. Architectural proposals on integration of the revitalized postindustrial coastal areas into socially oriented area of the Volgograd embankment are presented. The analysis of the experience in building and recovery of postindustrial landscapes of river basins is preformed to substantiate the proposed architectural and ecological principles of revitalization, "tree of properties" with the definition of environment quality indicator, the sequence of stages in planning of socially oriented area of the city embankment, and experimental project on integration of the studied coastal area into the vital space of the city of Volgograd.

In article the technique of adoption of the design decision on placement of eco-friendly routes for the purpose of use is proved by steady transport, the technique of the choice of the optimal solution of development of local bicycle network of routes is offered and developed structural model of the choice of options of placement of cycle routes in system of street road system and recreational zones in the conditions of sustainable development of the city. The theoretical and practical experience of construction of cycle routes in Russia and abroad is generalized; the method of the analysis of hierarchies which allows to carry out the choice of the design decision taking into account different groups of factors is used; the structural model at the choice of options of placement of bicycle tracks on the example of linear structure of the coastal city is developed; experimental design in the territory of streets of Volgograd is executed. The offered structural model is used in development of design offers of construction of bicycle tracks for the streets of Volgograd providing to inhabitants and city visitors more attractive, healthy and cheap option of movement to place of work, training, rest and entertainments.

The research is directed to the development of a model for the “smart city” including an interior space with the developed system of information technologies to provide comfortability in the area of living environment and the natural external envelope forming a hurdle from negative natural and climatic phenomena. Some new landscape solutions are given that increase the potential of energy saving technologies in the city when later transforming it into the Smart city. The history of building the green belt around Stalingrad-Volgograd is analyzed, directions of the ecological type of their impact on the urban living quality are settled. New landscape solutions are presented increasing the potential of energy saving technologies of the city. The research embrace the theoretical principles of forming the landscape building objects in the concept of the Smart city. The article justifies the need for enlarging the landscape building techniques in terms of enhancing the energy efficiency of buildings as well as forming the territorial platform to transform the city into the “Smart city” region. The developed methodology of the landscape object building enables to apply the obtained proposals in the Russian and world construction under similar natural conditions when developing the city into the Smart city sphere.