Revista y Edición

Volumen 59 (2022): Edición 4 (August 2022)

Volumen 59 (2022): Edición 3 (June 2022)

Volumen 59 (2022): Edición s3 (June 2022)

Volumen 59 (2022): Edición 2 (April 2022)

Volumen 59 (2022): Edición 1 (February 2022)

Volumen 58 (2021): Edición 6 (December 2021)

Volumen 58 (2021): Edición 5 (October 2021)

Volumen 58 (2021): Edición 4 (August 2021)

Volumen 58 (2021): Edición 3 (June 2021)

Volumen 58 (2021): Edición 2 (April 2021)

Volumen 58 (2021): Edición 1 (February 2021)

Volumen 57 (2020): Edición 6 (December 2020)

Volumen 57 (2020): Edición 5 (October 2020)

Volumen 57 (2020): Edición 4 (August 2020)

Volumen 57 (2020): Edición 3 (June 2020)

Volumen 57 (2020): Edición 1-2 (April 2020)

Volumen 56 (2019): Edición 6 (December 2019)

Volumen 56 (2019): Edición 5 (October 2019)

Volumen 56 (2019): Edición 4 (August 2019)

Volumen 56 (2019): Edición 3 (June 2019)

Volumen 56 (2019): Edición 2 (April 2019)

Volumen 56 (2019): Edición 1 (February 2019)

Volumen 55 (2018): Edición 6 (December 2018)

Volumen 55 (2018): Edición 5 (October 2018)

Volumen 55 (2018): Edición 4 (August 2018)

Volumen 55 (2018): Edición 3 (June 2018)

Volumen 55 (2018): Edición 2 (April 2018)

Volumen 55 (2018): Edición 1 (February 2018)

Volumen 54 (2017): Edición 6 (December 2017)

Volumen 54 (2017): Edición 5 (October 2017)

Volumen 54 (2017): Edición 4 (August 2017)

Volumen 54 (2017): Edición 3 (June 2017)

Volumen 54 (2017): Edición 2 (April 2017)

Volumen 54 (2017): Edición 1 (February 2017)

Volumen 53 (2016): Edición 6 (December 2016)

Volumen 53 (2016): Edición 5 (October 2016)

Volumen 53 (2016): Edición 4 (August 2016)

Volumen 53 (2016): Edición 3 (June 2016)

Volumen 53 (2016): Edición 2 (April 2016)

Volumen 53 (2016): Edición 1 (February 2016)

Volumen 52 (2015): Edición 6 (December 2015)

Volumen 52 (2015): Edición 5 (October 2015)

Volumen 52 (2015): Edición 4 (August 2015)

Volumen 52 (2015): Edición 3 (June 2015)

Volumen 52 (2015): Edición 2 (April 2015)

Volumen 52 (2015): Edición 1 (February 2015)

Volumen 51 (2014): Edición 6 (December 2014)

Volumen 51 (2014): Edición 5 (October 2014)

Volumen 51 (2014): Edición 4 (August 2014)

Volumen 51 (2014): Edición 3 (June 2014)

Volumen 51 (2014): Edición 2 (April 2014)

Volumen 51 (2014): Edición 1 (February 2014)

Volumen 50 (2013): Edición 6 (December 2013)

Volumen 50 (2013): Edición 5 (October 2013)

Volumen 50 (2013): Edición 4 (August 2013)

Volumen 50 (2013): Edición 3 (June 2013)

Volumen 50 (2013): Edición 2 (April 2013)

Volumen 50 (2013): Edición 1 (February 2013)

Volumen 49 (2012): Edición 6-II (December 2012)

Volumen 49 (2012): Edición 6-I (December 2012)

Volumen 49 (2012): Edición 5 (October 2012)

Volumen 49 (2012): Edición 4 (August 2012)

Volumen 49 (2012): Edición 2 (April 2012)

Volumen 49 (2012): Edición 1 (February 2012)

Volumen 48 (2011): Edición 6 (December 2011)

Volumen 48 (2011): Edición 5 (October 2011)

Volumen 48 (2011): Edición 4 (August 2011)

Volumen 48 (2011): Edición 3 (June 2011)

Volumen 48 (2011): Edición 2 (April 2011)

Volumen 48 (2011): Edición 1 (February 2011)

Volumen 47 (2010): Edición 6 (December 2010)

Volumen 47 (2010): Edición 5 (October 2010)

Volumen 47 (2010): Edición 4 (August 2010)

Volumen 47 (2010): Edición 3 (June 2010)

Volumen 47 (2010): Edición 2 (April 2010)

Volumen 47 (2010): Edición 1 (February 2010)

Volumen 46 (2009): Edición 6 (December 2009)

Volumen 46 (2009): Edición 5 (October 2009)

Volumen 46 (2009): Edición 4 (August 2009)

Volumen 46 (2009): Edición 3 (June 2009)

Volumen 46 (2009): Edición 2 (April 2009)

Volumen 46 (2009): Edición 1 (February 2009)

Volumen 45 (2008): Edición 6 (December 2008)

Volumen 45 (2008): Edición 5 (October 2008)

Volumen 45 (2008): Edición 4 (August 2008)

Volumen 45 (2008): Edición 3 (June 2008)

Volumen 45 (2008): Edición 2 (April 2008)

Volumen 45 (2008): Edición 1 (February 2008)

Detalles de la revista
Formato
Revista
eISSN
2255-8896
Publicado por primera vez
18 Mar 2008
Periodo de publicación
6 veces al año
Idiomas
Inglés

Buscar

Volumen 56 (2019): Edición 6 (December 2019)

Detalles de la revista
Formato
Revista
eISSN
2255-8896
Publicado por primera vez
18 Mar 2008
Periodo de publicación
6 veces al año
Idiomas
Inglés

Buscar

5 Artículos
Acceso abierto

National Energy and Climate Plans: Importance of Synergy

Publicado en línea: 31 Dec 2019
Páginas: 3 - 16

Resumen

Abstract

In the modern world, including the European Union, the Baltic States and Latvia, the power industry has a broad definition, area and content, several social life and economic existence, comfort and safety provision. It also covers the following segments: heat/thermal energy, transport/fuel, electricity, energy resources and their types, etc.

More competent and wider synergy among different energy sectors and power industry and other areas provides the option to solve the global problems, for example, the mitigation of climate changes and the provision of energy sustainability by reducing the production of greenhouse gases, increasing the use of renewable energy sources, achieving higher energy efficiency and providing the careful use of energy resources. The results of synergy are of economic importance; they provide the efficiency and competitiveness of costs.

In this paper, the necessity of synergy between renewables and conventional generation and synergy among energy sectors are considered to achieve the dimensions of national energy and climate plans.

Palabras clave

  • energy
  • infrastructure
  • national energy and climate plans
  • synergy
Acceso abierto

Synergy Between the Natural Gas and RES in Enhancement of Security of Energy Supply in the Baltic Countries (Problem Statement)

Publicado en línea: 31 Dec 2019
Páginas: 17 - 31

Resumen

Abstract

Although the natural gas and renewable energy sources are two significant elements of the Baltic primary energy mix both today and in foreseeable future, the competitive edge of their usage often prevails over possibilities of mutually beneficial coexistence. Universally both forms of energy are often described as key elements of a transition to a cleaner and more secure energy future (low-carbon economy), but regionally much of the current discourse considers each in isolation or concentrates on the competitive impacts of one on the other. The paper outlines several potential avenues and further research trends of synergies between the natural gas, a proven fast-reacting fossil fuel, and RES as seen from viewpoints of the Baltic energy sector sustainability and security of energy supply.

Palabras clave

  • decarbonisation
  • fast-reacting fossil fuels
  • natural gas
  • renewable energy
  • transitional technologies
  • synergy
Acceso abierto

Economical Valuation of Wave Power Plant in the Baltic Sea Region at Pre-Flexibility Stage

Publicado en línea: 31 Dec 2019
Páginas: 32 - 46

Resumen

Abstract

The article deals with free surface gravity waves as one of the alternative energy sources and their use. The potential of the waves and their transformation devices are considered as the main energy use impact factors. The goal of the research is to perform a cost-benefit assessment. The following tasks have been set: to make an assessment of wave potential, to identify the conversion model and turbine, to determine economic criteria taking into account wave and price variability. The article also provides the description of the theoretical valuation of the costs of the mentioned turbine power plant.

Palabras clave

  • axial turbine
  • renewable energy
  • wave energy
  • wave length
  • wave power
  • wave power plant
  • wave propelled turbine
Acceso abierto

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Publicado en línea: 31 Dec 2019
Páginas: 47 - 56

Resumen

Abstract

The paper presents an experimental study of five different gypsum composites taking into account paraffin permeability. The composites consist of synthetic gypsum, paraffin and polymers. The samples were produced from gypsum slurry of mixing ingredients, all in the liquid state. After 7 days of maturing, the condition of the samples was assessed as well as drying time was determined. In the second part, the paraffin tightness of different samples was analysed. The results showed that after three weeks of tests the tightness sample was A4. Other polymers were characterised by lower tightness. The content of polymer had also the effect on the final results, but the direct relation between polymer content and paraffin tightness was not observed.

Palabras clave

  • admixture
  • gypsum
  • polymer
  • phase change materials
  • tightness
Acceso abierto

Ensuring Reliability of Control Data in Engineering Systems

Publicado en línea: 31 Dec 2019
Páginas: 57 - 69

Resumen

Abstract

The paper presents the approach of determination of rationality coefficients of control system, inputted uncertainty, control of the process, system errors, and uncertainty. Algorithms for identifying the states of system have been developed on the basis of theorems of identification. They actually implement the theoretical multiplication cross-section and establish that increasing the reliability of information is possible only through the use of redundancy (structural, procedural, and informational). The increase in the reliability of control data with the developed methods ensures significant improvement of the functioning of information systems and facilitates the adoption of more substantiated decision making.

Palabras clave

  • control data
  • engineering system
  • reliability
  • theorems of identification
  • uncertainty
5 Artículos
Acceso abierto

National Energy and Climate Plans: Importance of Synergy

Publicado en línea: 31 Dec 2019
Páginas: 3 - 16

Resumen

Abstract

In the modern world, including the European Union, the Baltic States and Latvia, the power industry has a broad definition, area and content, several social life and economic existence, comfort and safety provision. It also covers the following segments: heat/thermal energy, transport/fuel, electricity, energy resources and their types, etc.

More competent and wider synergy among different energy sectors and power industry and other areas provides the option to solve the global problems, for example, the mitigation of climate changes and the provision of energy sustainability by reducing the production of greenhouse gases, increasing the use of renewable energy sources, achieving higher energy efficiency and providing the careful use of energy resources. The results of synergy are of economic importance; they provide the efficiency and competitiveness of costs.

In this paper, the necessity of synergy between renewables and conventional generation and synergy among energy sectors are considered to achieve the dimensions of national energy and climate plans.

Palabras clave

  • energy
  • infrastructure
  • national energy and climate plans
  • synergy
Acceso abierto

Synergy Between the Natural Gas and RES in Enhancement of Security of Energy Supply in the Baltic Countries (Problem Statement)

Publicado en línea: 31 Dec 2019
Páginas: 17 - 31

Resumen

Abstract

Although the natural gas and renewable energy sources are two significant elements of the Baltic primary energy mix both today and in foreseeable future, the competitive edge of their usage often prevails over possibilities of mutually beneficial coexistence. Universally both forms of energy are often described as key elements of a transition to a cleaner and more secure energy future (low-carbon economy), but regionally much of the current discourse considers each in isolation or concentrates on the competitive impacts of one on the other. The paper outlines several potential avenues and further research trends of synergies between the natural gas, a proven fast-reacting fossil fuel, and RES as seen from viewpoints of the Baltic energy sector sustainability and security of energy supply.

Palabras clave

  • decarbonisation
  • fast-reacting fossil fuels
  • natural gas
  • renewable energy
  • transitional technologies
  • synergy
Acceso abierto

Economical Valuation of Wave Power Plant in the Baltic Sea Region at Pre-Flexibility Stage

Publicado en línea: 31 Dec 2019
Páginas: 32 - 46

Resumen

Abstract

The article deals with free surface gravity waves as one of the alternative energy sources and their use. The potential of the waves and their transformation devices are considered as the main energy use impact factors. The goal of the research is to perform a cost-benefit assessment. The following tasks have been set: to make an assessment of wave potential, to identify the conversion model and turbine, to determine economic criteria taking into account wave and price variability. The article also provides the description of the theoretical valuation of the costs of the mentioned turbine power plant.

Palabras clave

  • axial turbine
  • renewable energy
  • wave energy
  • wave length
  • wave power
  • wave power plant
  • wave propelled turbine
Acceso abierto

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Publicado en línea: 31 Dec 2019
Páginas: 47 - 56

Resumen

Abstract

The paper presents an experimental study of five different gypsum composites taking into account paraffin permeability. The composites consist of synthetic gypsum, paraffin and polymers. The samples were produced from gypsum slurry of mixing ingredients, all in the liquid state. After 7 days of maturing, the condition of the samples was assessed as well as drying time was determined. In the second part, the paraffin tightness of different samples was analysed. The results showed that after three weeks of tests the tightness sample was A4. Other polymers were characterised by lower tightness. The content of polymer had also the effect on the final results, but the direct relation between polymer content and paraffin tightness was not observed.

Palabras clave

  • admixture
  • gypsum
  • polymer
  • phase change materials
  • tightness
Acceso abierto

Ensuring Reliability of Control Data in Engineering Systems

Publicado en línea: 31 Dec 2019
Páginas: 57 - 69

Resumen

Abstract

The paper presents the approach of determination of rationality coefficients of control system, inputted uncertainty, control of the process, system errors, and uncertainty. Algorithms for identifying the states of system have been developed on the basis of theorems of identification. They actually implement the theoretical multiplication cross-section and establish that increasing the reliability of information is possible only through the use of redundancy (structural, procedural, and informational). The increase in the reliability of control data with the developed methods ensures significant improvement of the functioning of information systems and facilitates the adoption of more substantiated decision making.

Palabras clave

  • control data
  • engineering system
  • reliability
  • theorems of identification
  • uncertainty

Planifique su conferencia remota con Sciendo