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Taking advantage of the potential of daylighting in the building helps to save energy used for artificial lighting. In Russia and other countries, where most of the energy is consumed for heating in winter, the increased window area leads to a reduction in the energy costs of artificial lighting but increases the heat loss through the windows blocks. Some studies contain criteria for assessing the feasibility of increasing the area of window, however, the influence of artificial light sources have not included. In this paper, the thermal balance of the room is considered, including the influence of artificial light sources, heat gain from solar radiation and transmission heat loss through window blocks. By calculating the difference in the thermal balance of the room after and before the increase in the window area, an expression of the criterion for evaluating the benefits of increasing the window area by energy indicators was obtained. Based on the cost of heat and electricity, the expression of the criterion for assessing the benefits of economic indicators was proposed. According to the presented criteria, the calculation for different function spaces: residential, office and school classes designed for Moscow was carried out. It is shown that, according to energy indicators, an increase in the window area is unprofitable or low profitable for residential and office premises, but beneficial for the school class. In conclusion, the paper shows the possibility of evaluating the energy efficiency of increasing the area of the window using the developed criteria. [ABSTRACT FROM AUTHOR]

Taking advantage of the potential of daylighting in the building helps to save energy used for artificial lighting. In Russia and other countries, where most of the energy is consumed for heating in winter, the increased window area leads to a reduction in the energy costs of artificial lighting but increases the heat loss through the windows blocks. Some studies contain criteria for assessing the feasibility of increasing the area of window, however, the influence of artificial light sources have not included. In this paper, the thermal balance of the room is considered, including the influence of artificial light sources, heat gain from solar radiation and transmission heat loss through window blocks. By calculating the difference in the thermal balance of the room after and before the increase in the window area, an expression of the criterion for evaluating the benefits of increasing the window area by energy indicators was obtained. Based on the cost of heat and electricity, the expression of the criterion for assessing the benefits of economic indicators was proposed. According to the presented criteria, the calculation for different function spaces: residential, office and school classes designed for Moscow was carried out. It is shown that, according to energy indicators, an increase in the window area is unprofitable or low profitable for residential and office premises, but beneficial for the school class. In conclusion, the paper shows the possibility of evaluating the energy efficiency of increasing the area of the window using the developed criteria. [ABSTRACT FROM AUTHOR]

This paper identifies problems in the country's energy sector associated with low efficiency. Thus, a comparative analysis of statistical data showed that in 2020 there was an increase in the share of unprofitable energy enterprises in Russia from 46.3 to 48.3%, the growth of losses increased to 448,505 billion rubles, exceeding the values of 2019 -141,510 billion rubles, therefore, more than 3 times. It is shown that there is an increase in the degree of depreciation of fixed assets of energy enterprises from 45.7 to 47.6%, which is accompanied by an increase in the costs of maintaining the operability of equipment. In addition, the costs of correcting internal defects are increasing due to the poor-quality organization of monitoring the equipment condition, which also reduces the efficiency of energy enterprises. Different approaches to solving the problem have been summarized: the use of information innovations in the energy sector, the introduction of technological and transactional innovations, as well as innovations in the management of an energy company, for example, the transition to project management or a risk-based management model in the electric power industry. We offer project management to reduce non-manufacturing costs in an energy company on a concrete example of reducing the costs of internal defects correction and implementing an improvement algorithm. [ABSTRACT FROM AUTHOR]

For the moment the energy safety of the Kaliningrad region (KR) is largely dependent on the mutual electrical energy exchange through existing connections to Lithuania and further to Belarus and Russia. Taking into account the upcoming KR energy system disconnection from Lithuania, followed by isolated operation (starting from 2025) and wind energy potential of KR, the question of electrical production by the wind as an option for KR sustainable development should be considered. The paper aims to compare three different connection possibilities for onshore power plans (WPP) of different capacity (30 and 90 MW) based on preliminary system power flow calculations using an especially developed energy system model, which are: 1. connection of WPPs to the existing substations of the grid; 2. connection of WPPs to "Wind Grid" ("WG") – new lines and substations in energy system especially constructed for wind energy production; 3. simultaneous connection of WPPs to existing substations and to "WG". The conclusion of the paper is 1st the option is the cheapest, but not viable because WPPs create additional problems with voltage levels and lines overload. Some measures to overcome observed problems are proposed. The electrical system parameters, such as voltage levels, power flows, and power losses are very close for the 3rd and 2nd options. The 3rd option is more expensive, because of additional switching equipment, but most flexible and easy to handle for the system operator. [ABSTRACT FROM AUTHOR]

The problematic of scientific research is the absence in domestic practice of systemic approaches to justified digital transformation in science-intensive organizations. This paper evaluates the implementation of a digitalization strategy using the example of science-intensive enterprises in strategic industries, substantiates the need for a sustainable digital transformation program in a science-intensive company. The level of digitalization of companies in Russia and the world is analyzed, synergistic effects from the implementation of digital initiatives and the advantages of their mutual aggregate interaction are revealed. Conclusions were made about the impact of the implementation of digital solutions on the competitiveness of knowledge-intensive industries, about the effects and effectiveness of the implementation of innovative digital projects. They also noted the risks, difficulties and problems arising in the implementation of digital solutions in enterprises. Strategic sectors of the economy were selected as the basis for the analysis: traditional sectors of the fuel and energy complex in terms of their contribution to the economy (PJSC Lukoil, PJSC Tatneft, State Corporation Rosatom) and in terms of development prospects (State Corporation Roskosmos). [ABSTRACT FROM AUTHOR]

This paper provides a brief overview of the current state of heat energy markets in countries with developed district heating systems (the Nordic countries, China and Russia). Changes to the organizational structure of the market are identified, in the context of generational change in district heating systems (1-5 generations). Special emphasis is placed on providing end-users of thermal energy with new options using renewable energy sources, heat pumps as stated in the new fourth energy package adopted in the European Union in 2019. Generalized block diagram of the automation system for active prosumer developed. It is concluded that it is necessary to develop wireless sensor control systems for district heating systems that keep pace with the market changes. [ABSTRACT FROM AUTHOR]

The paper presents an analysis of the twenty years' results of restructuring (which is still ongoing) the electric power industry in Russia from the perspective of systems studies. It indicates that most of the reform goals focusing on significant enhancement of the industry efficiency based on market relations have not been achieved. This failure was due to the lack of a comprehensive rationale for adopted lines of the reform, the absence of systems analysis, and no assessment of the consequences of implementing the Western electricity market models in the context of Russia. Wholesale and retail markets for electricity and heat have been created but formally and without full-fledged competition. The inflow of investment in the energy sector was insufficient. The study shows that advanced technologies are currently adopted in Russia's power industry, but necessary measures to transform market relations are not undertaken. Based on the consideration of current challenges and trends, some directions for the wholesale and retail energy markets transformation in Russia have been proposed. [ABSTRACT FROM AUTHOR]

The study outlines a methodological approach to assessing the impact of greenhouse gas emission limits on the innovative development of TPPs. The proposed methodological approach is based on a dynamic optimization territory-specific (with a breakdown into aggregated regions) production model of the country's energy sector. The authors present a list of the tasks that are solved in the electric power and heating module of the energy sector model. The paper also describes the results of the assessment of the impact of limits on CO2 emissions from thermal power plants in Russia on their innovative development in the long term. [ABSTRACT FROM AUTHOR]