In this article we consider the results of studying the problems and prospects of using information technologies to ensure the introduction of new innovative approaches in hydroecology and hydropower, the creation of GIS (GIS-geographic information systems) for hydroecological and hydro-technical monitoring, and also as a visual material for students studying the use of information systems in the development of environmentally acceptable modes of operation of hydraulic structures. The article was devoted to an actual theme - GIS-systems creation for hydro ecological monitoring as tool for support the information systems of the Aral Sea basin and optimisation models at development of ecologically applicable modes of exploitation of hydro technical buildings. It is possible and useful to use association of outputs from various scientific researches in one GIS-database as universal tool for modeling. As example of such approach can be consider as one interconnected system which combination results of work: - System of water-salt balances in all rivers of Uzbekistan. - System of digital maps and schemes that can be used in the development of environmentally acceptable modes of operation of hydraulic and hydropower facilities in Uzbekistan. - The Aral Sea basin monitoring systems (ASBMS) as a digital system of hydroecological monitoring of quality of surface waters on basis ArcView.

In this article, we also consider the results of studying the problems and prospects for the use of educational and research stands of the Department of Hydropower and Hydraulics and information technologies to provide modelling of physical processes and environmental monitoring. This will improve the methodology for the education of energy engineers to implement the program of measures for the further development of energy and renewable energy in Uzbekistan. As an example of such an approach, we can consider as one interconnected System that combines the results of work: Examples of methods for creating a virtual stand based on digital maps for information support of environmental monitoring of hydraulic structures; An example of an experimental stand for research on the operation of structures made of reinforced soil; Examples of stands for the study of hydraulic processes - an example of the development of instruments for hydrometric support. Experimental stands are given. Methods for creating hydrostatic pressure and own weight of the dam. Conclusions and recommendations based on the results of experimental research on educational research stands.

The article is devoted to the urgent topic of creating a comprehensive geographic information system for environmental monitoring and decision support for hydro-technical structures and land reclamation facilities of Uzbekistan. The research results allow a more substantial assessment of the environmental situation, the fundamental features of the arid zone. For monitoring, a methodology is disclosed, which will help water and water organizations to plan and predict the environmental status in the water sector. The results of a comprehensive analysis of the Aral Sea basin using geographic information systems will help in creating a decision support system. The excessive use of water resources within the Aral Sea basin for agricultural, industrial, and wastewater needs has resulted in the contamination of water resources by a diversity of hazardous chemicals from anthropogenic. Expert questionnaires for environmental measures developed during the reconstruction of hydro-technical structures and land reclamation facilities. They are using the methodology of environmental monitoring. It is possible to evaluate and improve the hydro ecological situation of hydro-technical structures and land reclamation facilities in Uzbekistan

The article discusses the replacement of throttling at the stations of technological lowering of the pressure of main natural gas by an expander-generator technology that allows the production of a cheap one with high environmental indicators. The disadvantage of this method of generating electricity is a significant cooling of the gas at the outlet of the expander, which necessitates its heating. The efficiency of the expander-generator set is largely determined by the adopted gas heating scheme. Achieving such heating temperatures is possible only by using high-potential energy resources, which are present in the technological equipment of gas distribution stations in the form of gas heaters with an intermediate heat carrier, designed to heat gas before expansion. Calculations of the amount of fuel gas required for heating the main natural gas in front of the expander-generator unit at the gas distribution stations under consideration have been carried out. The results of the study of the influence of the temperature of gas heating in front of the expander on the consumption of fuel gas supplied for heating and the numbers of heaters are presented. An analytical dependence of the electric power of the heat pump installation on the difference between the total power consumption of the compressor and the power of the air turbine is obtained.

The article deals with the problem of using secondary energy resources in the system of transportation and distribution of natural gas, and the possibility of generating electricity without burning fuel by reducing high-pressure natural gas at gas distribution stations. The analysis of the influence of the gas temperature at the entrance to the expander - generator unit, as well as the dependence of the power of the expander - generator unit on the gas temperature and the temperature of the low-potential source is presented. Optimal temperatures are obtained at which the power of the expander-generator unit is maximal for the given gas parameters.