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The study of issues related to the cost of production of biofuel deals with most modern countries. The cost of fuel is one of the most important indicators in the production of various types of energy. The cost of production of biofuels from wood is affected by many factors. Constant components of the cost of production of fuel chips are the collection, removal and shredding and loading of wood chips into motor vehicles, which are 500 rubles/m3. Transporting and unloading chips in the consumer is a variable compon...

Forests are the national wealth of Latvia that is to be preserved and multiplied to meet the ecological, economic and social needs of society. Latvian residents with the forest has always linked the economic, cultural and emotional bonds that have developed over centuries. Forest performs essential ecological and social functions at both national and international level, and providing adequate growing and cutting stock measurements, we can estimate different growth factor influence. Historically this data delivere...

The article analyzes the electricity needs of the University Politehnica of Bucharest campus, consisting of 10 faculty buildings and 18 students? accommodation buildings. This work establishes the maximum power consumption and proposes a solution through a micro smart grid with a photovoltaic power plant. The solutions proposed aim to increase the efficiency of the energy consumption. This objective is the basis of a project proposal with European funds, under preparation, in order to implement the solution propos...

Relevance of results. One of the main factors of the accelerated transition to innovative development of the economy on the basis of the formation of high-tech industries is rational nature management, which makes it possible to use the country's natural resources with the greatest impact and, on the basis of their deep processing, create new types of structural materials and promote the introduction of advanced technologies and industries. The implementation of these tasks determines the need for a well-founded p...

Synthesis gas for an electrochemical generator was produced in a thermochemical reactor with autothermal air conversion of methane (natural gas). Based on thermal balances of the reactor, a battery of SOFCs and a boiler-utilizer (BU) for heating primary and secondary air, cathodic air and methane, the following parameters were calculated: temperature at the anode, EMF of the fuel cell, electrical efficiency (gross) of the electrochemical generator, portion of hydrogen oxidized at the SOFC?s anode and specific cons...

Within the outlines of work, based on foreign and Russian experience, the urgency of introducing small-scale generations into the real sector of the economy, including mini- thermoelectric plant (mini-TEPs) is stipulated. The main indicators that characterize the efficiency of power plants are provided. The basic techno-economic parameters of power plants, such as specific capital investments for the construction, the cost of electricity and heat, specific estimated operating costs and others, are analysed. Separa...

The article shows that existing economic tool for natural resource using in agriculture doesn?t provide efficient natural resource using and main elements of natural media (close-to-the ground atmosphere layer, soils, water resources, flora and fauna) consump-tion, and doesn?t encourage resource and energy saving technologies practical use and doesn?t follow requirements provided by modern Russian Federation low on land and water using relations and environment safety. The necessity of transfer from high re-source...

Reducing energy costs and cost of production is a strategic goal of an industrial enterprise in the field of energy conservation and energy efficiency. The main driving force for the activities of the organization is staff. Therefore, the constant increase of knowledge and competence of employees on energy saving and use of secondary energy resources are the main points of the social and environmental policy of the industrial enterprise [1]. Only by motivating and involving staff, improving the control system, imp...

The presented paper deals with the determination of the efficiency of wastewater treatment plants, concentration limits and values of permissible pollution of surface water and wastewater, requirements for permitting discharges of wastewater into surface water and into sewerage in sensitive areas. The objective of this paper is to define the provisions of European Community legislation on surface water protection. These findings are applied in selected wastewater treatment plants in the Czech Republic where the mo...

A classification of the levels of convergence of geoinformation resources in economic systems is proposed, which puts information technology solutions, services, platforms, infrastructure and categories that the subjects of the economy solve in the process of forming value chains of tasks. The use of convergence of information, financial and material flows is considered, mechanisms of the received synergetic effect are established. A technique for numerical estimation of such an effect is proposed, as well as a mo...

Daylight controls our natural biorhythm, influences our mood, has an important effect on how we feel and has an essential role in creating a healthy workplace. In most cases, daylight is not enough for reach the levels of illumination appropriate to the normal operation and we use artificial light. Incorrect lighting affects people's comfort, can lead to physical fatigue (especially eye fatigue) and reduced intellectual performance, especially when high concentration is needed. The implementation of lighting syste...

Granular sludge aerobic technology (AGS) has been extensively studied in recent years because of its advantages compared to activated sludge technology. Currently, this technology is implemented in SBR (sequential batch bioreactor) configuration. An experimental model bioreactor was designed for adapting the AGS technology to continuous flow conditions. It consists of a rectangular shape bioreactor, an area for pre-settling and recycling of granules, followed by a settling tank. This configuration is more suitable...