scholarly journals Carbon Dioxide Turbine Expander Plant Producing Liquid and Gaseous Carbon Dioxide

2019 ◽  
Vol 62 (1) ◽  
pp. 77-87 ◽  
Author(s):  
A. V. Ovsyannik
Keyword(s):  
Carbon Dioxide ◽  
Thermal Energy ◽  
Boiling Point ◽  
Storage Systems ◽  
Energy Resources ◽  
Heating Unit ◽  
Secondary Energy ◽  
Gaseous Carbon Dioxide ◽  
And Storage ◽  
Secondary Energy Resources

The scheme of carbon dioxide cogeneration and trigeneration plant with the use of secondary energy resources in the form of combustion products or flue gases that enables to produce electricity, thermal energy and cold for centralized and decentralized supply of consumers simultaneously, is presented. In addition, the plant can produce liquid and gaseous carbon dioxide. The main elements of the plant are a heating unit, a turbodetander unit and a carbon dioxide unit for the production of cold, liquid and gaseous carbon dioxide. A thermodynamic calculation and a brief exergy analysis of the plant were carried out. In the proposed plant, off-gases from glassmelting, metallurgical furnaces, heat power facility and other energy facilities with a secondary energy temperature of 250–400 °C and above can be used as secondary energy resources. The heating unit of the installation has been designed to produce thermal energy for heating and hot water supply systems. The carbon dioxide unit has been designed for the production of cold, electric energy and carbon dioxide in liquid and gaseous form in order to ensure the operation of the plant and the use for commercial purposes. The cold in the plant can be obtained in two evaporators operating at different boiling temperatures. At a higher boiling point of carbon dioxide, cold is used in air conditioning systems and in centralized cooling and storage systems, while at a lower boiling point of carbon dioxide – in freezing and storage systems. For the implementation of the reverse carbon dioxide cycle, a three-stage carbon dioxide compressor with a receiver after the third stage is used. To reduce compression performance of the compressor, complete intermediate cooling of carbon dioxide between stages should be provided.

scholarly journals Application of an absorption heat pump in the conditions of an existing combined heat and power plant

2020 ◽  
Vol 34 ◽  
pp. 57-62
Author(s):  
A. Redko ◽  
I. Redko ◽  
S. Pavlovskiy ◽  
Y. Burda ◽  
Y. Pivnenko ◽  
...  
Keyword(s):  
Energy Balance ◽  
Thermal Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Combined Heat And Power ◽  
Energy Resources ◽  
Secondary Energy ◽  
Condense Water ◽  
Secondary Energy Resources ◽  
Heating Networks

The dependence of mankind on energy resources only increases with the development of scientific and technological progress. It is clear that the supply of natural energy resources will run out soon. The solution is using new energy generation technologies based on renewable and secondary sources. Due to the presence in Ukraine of operating combined heat and power plants, there is the possibility of producing thermal energy using the secondary heat by absorption heat pumps. At the same time, the thermal energy of flue gases and steam from steam turbines does not heat the atmosphere, but are involved in the generation of thermal energy for heating networks of settlements. Due to the ability of the absorbent solution to absorb and condense water vapor under the influence of low-potential and high-potential heat carriers, it is possible to significantly reduce the consumption of traditional energy resources and increase the overall efficiency of the combined heat and power plants. World experience shows that the use of secondary energy resources can significantly improve the country's energy balance. And the main problem is the availability of these resources. In today's changing climate, the use of renewable energy sources requires additional expences and it is appropriate to pay attention to use of present secondary energy resources, which are not used now. There are a lot of such resources available in heat generating facilities. This is especially noticeable in large cities with central heating networks. Therefore, increasing the efficiency of their work makes it possible to significantly improve the energy balance of the whole country and reduce tariffs for thermal energy for industry and individual consumers, which, in turn, will improve the living standards of citizens.

Utilizing the Secondary Energy Resources Available in Coal Mines

Vestnik MEI ◽  
2018 ◽  
Vol 5 (5) ◽  
pp. 24-33
Author(s):  
Aleksey В. Biryukov ◽  
◽  
Dmitriy I. Parkhomenko ◽  
Viktor V. Varakuta ◽  
Pavel А. Gnitiev ◽  
...  
Keyword(s):  
Coal Mines ◽  
Energy Resources ◽  
Secondary Energy ◽  
Secondary Energy Resources

DYNAMICS OF CHANGES IN THE STRUCTURE AND VOLUMES OF FORMATION OF SECONDARY ENERGY RESOURCES IN THE ENERGY OF UKRAINE

2017 ◽  
Author(s):  
Nataliia Fialko ◽  
◽  
Viktor Prokopov ◽  
Nataliia Meranova ◽  
Nina Polozenko ◽  
...  
Keyword(s):  
Energy Sector ◽  
Energy Resources ◽  
Secondary Energy ◽  
Secondary Energy Resources

The paper presents the dynamics of changes in volumes of secondary energy resources (SER) in the energy sector of Ukraine by type of energy. The data on changes in the structure and volumes of secondary energy resources for the last period are presented.

ANALYSIS OF THE USE LEVEL OF SECONDARY ENERGY RESOURCES IN ENERGY SECTOR OF UKRAINE

2017 ◽  
Author(s):  
Nataliia Fialko ◽  
◽  
Viktor Prokopov ◽  
Julii Sherenkovskii ◽  
Artem Yevtushenko ◽  
...  
Keyword(s):  
Energy Sector ◽  
High Potential ◽  
Energy Resources ◽  
Secondary Energy ◽  
Secondary Energy Resources

The features of the use of heat and combustible and heat secondary energy resources (SER) in the energy sector of Ukraine are considered. The data on the use levels of various types of combustible SER, as well as high-potential heat SER by types of utilization plants are presented.

Evaluation of Commercial Building Clusters With Energy Storage to Reduce Reliance on Electrical Utility Grids

2021 ◽  
Author(s):  
Gregory Kaminski ◽  
Philip Odonkor
Keyword(s):  
Energy Storage ◽  
Storage Systems ◽  
Storage System ◽  
Energy Resource ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Commercial Building ◽  
Distributed Energy ◽  
Distributed Resources ◽  
And Storage

Abstract The decreasing cost of implementation and increasing regulatory incentive to lower energy use have led to an increased adoption of distributed energy resources in recent years. This increased adoption has been further fueled by a surge in energy consciousness and the expansion of energy-saving products and technologies. To lower reliance on the electrical grid and fully realize the benefits of distributed energy resources, many consumers have also elected to use battery systems to store generated energy. For owners of multiple buildings, or multiple owners willing to share the operational cost, building clusters may be formed to more effectively take advantage of these distributed resources and storage systems. The implementation of these systems in existing buildings introduces the question of what makes a “good” building cluster. Furthermore, the scalable nature of distributed energy sources and storage systems create countless possibilities for system configuration. Through comparison of unique two-building clusters from a stock of five buildings with a given distributed energy resource (in this case, a solar photovoltaic panel array) and energy storage system, we develop a fundamental understanding of the underlying factors that allow building clusters to be less reliant on the utility grid and make better use of energy generation and storage systems.

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