Screening of Factors for Assessing the Environmental and Economic Efficiency of Investment Projects in the Energy Sector

Karaeva, Anzhelika; Magaril, Elena; Kiselev, Andrey; Cioca, Lucian‐Ionel

doi:10.3390/ijerph191811716

Cited by 11 publications

(5 citation statements)

References 47 publications

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“…Energy-saving technologies, materials, and measures should not only lead to a reduction in energy consumption but also be cost-effective. Unfortunately, investment performance in energy-saving measures is rarely considered [1,2]. Nowadays, there is a growing interest and demand for energy savings, reducing the load on material resources, and reducing pollution.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Koriakovtseva,

Dontsova,

Nemova

2024

Buildings

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The thermal performance of the building envelope is significant in energy-efficient construction. Because concrete is widely used in civil engineering, options to reduce its R-value should be considered. This study explores the thermal and structural properties of aerogel-enhanced concrete. Silica aerogel powder was mixed with fine-grained concrete at 15 vol.%. Two series of samples were prepared to identify the preferred technology. The first series of samples were mixed without isopropyl alcohol; for the second series, the alcohol was mixed with silica aerogel before mixing into the dry mix. The thermal conductivity, compressive strength, and bending resistance of the specimens were measured. The presence of silica aerogel admix resulted in a decrease in the compressive strength of the specimens by 30% compared with that of the reference samples and a reduction in the bending strength of the samples by 9% compared with that of the reference samples. For the first and second series of samples, the K-values of the aerogel-enhanced specimens varied in the range from 0.83 W/(m·K) to 1.13 W/(m·K), respectively. To further decrease the thermal conductivity, gypsum putty was then added to the specimens, resulting in the K-values further decreasing to 0.64 W/(m·K) and 0.84 W/(m·K), respectively. The calculation of heat losses through 1 m2 of the aerogel-enhanced concrete wall was performed. It has been shown that energy expenses for heating can be lowered by 30%. The calculation of the greenhouse gas emissions from the combustion of fuel required for heating was also considered. The emissions decreased by 30.2% compared with the reference sample. Microscopic examination of the face and section surfaces of the sample revealed a significant number of pores compared with conventional fine-grain concrete.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Koriakovtseva,

Dontsova,

Nemova

2024

Buildings

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“…The increase in the concentration of greenhouse gases (GHG) in the atmosphere, associated with the active use of natural energy carriers (coal, oil, natural gas) as fuel for energy production, disrupts the heat exchange of the planet with the surrounding space, which leads to significant climate changes [1]- [3]. A low-carbon economy involves the development and use of more environmentally friendly energy sources that do not have a negative environmental impact or emit a minimum level of GHG.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of National Decarbonization Policies: Is It Possible to Achieve Carbon Neutrality by 2050?

KARAEVA,

MAGARIL,

RUKAVISHNIKOVA

2023

WIT Transactions on Ecology and the Environment

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The complexity of the task of decarbonizing the global economy requires an integrated and coordinated approach from the governments of developed and developing countries, the organization of effective international cooperation and scientific and technological progress in the field of environmental technologies and alternative energy sources. At present, despite the measures taken, the problem of achieving carbon neutrality is the difficulties of abandoning fossil fuels in countries showing significant economic growth and being the largest CO2 emitters in recent decades. The purpose of this study is to review and analyse the current state of different energy sources consumption by the leading countries in CO2 emissions, and the projected changes in the global energy system during the fourth energy transition considering possible decarbonization scenarios. The article presents a comparative analysis of national policies and initiatives for the transition to a low-carbon economy and assesses the prospects for achieving the stated targets for reducing CO2 emissions by 2050.

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“…The directions of greening the global energy sector include the development of renewable and hybrid energy, the abandonment of the use of coal and fuel oil, eco-modernization of existing traditional energy facilities and the development and improvement of energy storage technologies [4]- [7]. All this requires the involvement of a large amount of financial, labour and intellectual resources and implies the implementation of large-scale investment projects [8]. Some of the measures applied have already demonstrated their effectiveness; in particular, the decommissioning of coal-fired power plants in OECD countries has significantly reduced the amount of toxic emissions into the atmosphere (Fig.…”

Section: Introductionmentioning

confidence: 99%

Express Environmental Evaluation of the Impact of Biogas Projects on Atmospheric Air

KISELEV,

KARAEVA,

MAGARIL

2023

WIT Transactions on Ecology and the Environment

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Greening the global energy sector implies the development and implementation of large-scale energy projects around the world. The quality and effectiveness of the environmental assessment plays a central role in achieving the declared results of eco-modernization: the ability to comprehensively and quickly assess the current activities of an energy facility or an investment project planned for implementation allows one to quickly implement environmental and management solutions. The energy sector is the largest emitter of greenhouse gases into the atmosphere and the largest consumer of natural resources; this is what one considers in most of the proposed approaches to environmental assessment in the scientific and methodological literature. However, in addition to greenhouse gas emissions (in particular CO2), energy facilities operating on traditional and alternative fuels consume a significant amount of oxygen as a result of their combustion, which also has a number of negative environmental consequences. The purpose of the study is the development of a methodology for rapid environmental assessment of energy projects, taking into account CO2 emissions and oxygen consumption. The article presents specific indicators of oxygen consumption and CO2 emissions per unit of generating capacity for various types of fossil and alternative fuels and their adoption on the example of a biogas project at a regional energy facility.

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Screening of Factors for Assessing the Environmental and Economic Efficiency of Investment Projects in the Energy Sector

Cited by 11 publications

References 47 publications

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Comparative Analysis of National Decarbonization Policies: Is It Possible to Achieve Carbon Neutrality by 2050?

Express Environmental Evaluation of the Impact of Biogas Projects on Atmospheric Air

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