Search Results

1 - 10 of 44 items :

  • "Energy intensity" x
Clear All
Changes in the Energy Consumption in EU-27 Countries

of energy in the economy. Ecological Economics. 32, pp. 301-317 EZCURRA R. (2007). Distribution dynamics of energy intensities: a cross-country analysis. Energy Policy. 35: 5254-5259 FISHER I. (1972). The making of index numbers. 3rd ed. Boston, MA: Houghton Mifflin. PATTERSON, M. G. (1996). What is energy efficiency?: Concepts, indicators and methodological issues. Energy Policy 24: 377-390. SALA-I-MARTIN, X. (1996). Regional cohesion: Evidence and

Open access
Renewable Energy Efficiency for Regional Development: Case of Belgorod Region

Economics), 27-36. (in Russian) Energy consumption per capita and energy intensity for selected countries, 1990-2012. (2014). International Energy Agency. Retrieved from https://www.iea.org/newsroomandevents/graphics/2014-08-19-energy-consumption-per-capitaand-energy-intensity.html Federal state statistics service (Rosstat). (2015). Retrieved from http://www.gks.ru/wps/wcm/connect/rosstat_main/rosstat/ru/statistics/ Pakina, A. (2014). Green Economy’s Prospects in Russia: Case of Baikal Area. Journal of Sustainable

Open access
The energy intensity of the production of energy chips from dendromass stands on long-term uncultivated agricultural land

Abstract

The aim of this work was to investigate the energy intensity of the fuel wood chips production on unused agricultural land. The unused agricultural land, overgrown with forest trees, also called white areas, is the result of the end of the traditional intensive management of agricultural land by the natural succession of forest stands and pioneers’ wood species on the borders of forest and non-forest land. These stands are advantageously localized due to previous method of the land utilization, accessible and therefore very interesting from the point of view of obtaining fuel dendromass. The logging and subsequent dendromass processing was carried out for the purpose of further land use as pasture land and also for the production of fuel wood chips and their subsequent sale to the end user. With the utilization of technology chain saw-forwarder-chipper, the energy intensity of each operation, expressed in terms of the amount of fuel consumed per unit of produced wood fuel, was determined. The share of energy consumed in the energy value of the harvested tree dendromass in the evaluated sites ranged from 0.43 to 0.62%, approximately 0.64 to 0.88% and the chipping 0.42 to 0.54%. The total amount of energy consumed after calculation the chipper transfers to an average distance of 180 km was within 1.46 to 2.11%. The average weight of the harvested trees caused the biggest impact on the energy intensity of the production process.

Open access
Greenhouse Gases and Energy Intensity of Granite Rock Mining Operations in Thailand: A Case of Industrial Rock-Construction

Abstract

This paper is aimed to systematically assess greenhouse gases (GHGs) and energy intensity of the granite rock mining operations in Thailand and also identify a range of feasible options to minimize their GHG emissions. Mining factories A, B and C, located in the Eastern region of Thailand, were selected as research case studies. The results indicated that the 3-year average of GHGs emissions from factories A to C was 3387 718 kgCO2e per year with approximately 2.92 kgCO2e per ton of granite rock produced over 2012 to 2014. Of this, the carbon intensity of grid-electricity consumption for the crushed rock production was 1.84 kgCO2/kWh. Diesel fuel combustion for transport activities in the mining factories was the greatest contributor to GHGs emissions (68 %) compared to the purchased electricity and explosion process, with 31 % and 1 %, respectively. In-Pit Crushing and Conveying (IPCC) installation, haul truck payload optimization and management, and reduction in tire rolling resistance have shown potential to reduce carbon emissions accounted for 20 % to 70 %.

Open access
Factorizing the Changes in CO2 Emissions from Indian Road Passenger Transport: A Decomposition Analysis

output in France”, Energy Policy , Vol. 35 No. 10, pp. 4772–4778. Boyd, G., McDonald, J.F., Ross, M. and Hanson, D.A. (1987), “Separating the Changing Composition of U.S. Manufacturing Production from Energy Efficiency Improvements: A Divisia Index Approach”, The Energy Journal , Vol. 8 No. 2, pp. 77–96. Chertow, M.R. (2000), “The IPAT Equation and Its Variants”, Journal of Industrial Ecology , Vol. 4 No. 4, pp. 13–29. Choi, K.-H. and Ang, B.W. (2012), “Attribution of changes in Divisia real energy intensity index — An extension to index

Open access
DEVELOPMENT OF THE STRUCTURE OF INTELLECTUAL AUTOMATIC CONTROL SYSTEM

Abstract

Relevance of the study is associated with reduced energy intensity of the process heat demand by improving the systems and control algorithms of automatic energy management in buildings. This paper presents a system for power management of individual modules with interaction via the Ethernet, allowing measuring the qualitative and quantitative performance of network communication protocols of different levels of performance monitoring in real time. The difference of the developed intellectual automatic control system consisting of separate modules with interaction via the Ethernet, there is no separation devices for simple and intelligent - all the devices are intelligent, the controller is a separate module, and its functions are performed by the control unit.

Open access
Energy Consumption Trends for Industry Segments in Northern Africa

Abstract

This article analyzes trends of the total final energy consumption in sectors of building materials, residential, and transport industry in Algeria. The total final energy by sector and type of fuel is analyzed. The evolution of the total energy intensity and the impact of energy consumption on the environment are discussed. Consumption per capita in Algeria is 1,058.0 kg of oil equivalent per person, while in Morocco, the country with almost the same number of inhabitants it is 458 Kgoe and in Tunisia it is 843 Kgoe. The total emission of gases is equal to 46 million Tons of CO2, with an average of 3 TECO2 / TOE.

Open access
Pressure Interaction of Mixing Particulate Material Along the Blade Length

Abstract

To assess the energy intensity of particulate materials mixing, it is necessary to know the state of stress in the particulate material in front of mixing elements. The theoretical background of this process results from the theory of the equilibrium limit of the particulate material, and this state may by described by Mohr’s circle theory and the Novosad model. Based on the above assumptions, it is possible to derive the pressure distribution along the blade height, but only for an infinitely long blade. A measuring system implemented on the homogenizer blade was constructed to examine the effects of the distribution of the mixed material on the mixing element along its length.

Open access
Temperature dependence of photoluminescence peaks of porous silicon structures

Abstract

Evaluation of photoluminescence spectra of porous silicon (PS) samples prepared by electrochemical etching is presented. The samples were measured at temperatures 30, 70 and 150 K. Peak parameters (energy, intensity and width) were calculated. The PL spectrum was approximated by a set of Gaussian peaks. Their parameters were fixed using fitting a procedure in which the optimal number of peeks included into the model was estimated using the residuum of the approximation. The weak thermal dependence of the spectra indicates the strong influence of active defects.

Open access
Energy-Efficient Shaping of Contemporary Buildings and Their Surroundings as an Essential Element of Modernization of Built-Up Areas

Abstract

A comprehensive design of a building along with the development of a surrounding land may counterbalance the tendency of housing estates comprising houses built on the basis of “ready-made projects” - which have no references to the existing urban tissue and which do not create a new one. In the first place, the energy intensity of buildings using the so-called passive methods should be lowered, and only then active systems should be applied, considering economic balance. The problem should be considered from two different perspectives i.e. for intensively and for less urbanised areas. The article results in the formulation of guidelines for energy-efficient modernization of contemporary buildings and their surroundings.

Open access