The processes happening in system of power supply of the AVO electric drive of gas are considered. The analysis is carried out and the assessment of consumption of electric energy of AVO of gas is executed.

Keywords: compressor station, device of air cooling of gas, mathematical statistics

The paper is dedicated to development of modified technology of producing and erection of large fiber-reinforced plastic (FRP) shells. This work gowing with the support of Russian Ministry of science and education. Technology is baced on the method of the vertical wet winding with the growing. The main prospective area of using of this technology, is the reconstruction of the tall chimneys with the erection of inner liner from the FRP shells.  

Keywords: fiber reiforced plastics, glass reinforced plastics, chimneys, metod of the vertical wet winding with the growing

The description of the flow sheet of unified electric power station of ship based on a combustion engine by alternating frequency rotation of shaft. The assessment of fuel profitability of such electric power station is given. In article materials of the state contract № 16.526.12.6016 on 11.10.2011 are used.

Keywords: unified electric power station, explosion engine, synchro generator, synchro motor, converter

This article addresses the energy efficiency of heating water boilers that produce energy required for heating, ventilation and hot water. We review the main technological and engineering problem-solving tools of energy efficiency. An integrated approach to the selection of the main and auxiliary process equipment described in this article can significantly improve the energy efficiency of the boiler as a whole.

Keywords: energy efficiency, boiler, thermal circuit, heat, water treatment

Analyzed physical and energetic approach to ensure the environmental safety of the fuel and energy complex as the best, are used in the document evaluation criteria are considered the advantages and disadvantages of the approach

Keywords: energy companies, efficiency, energoemkostny rate, reliability, effektinosti measure of economic, physical-energy approach

The problems of the modification of voltage inverter circuit are considered and using of a DC power source in the realization of function of boosting voltage converter.

Keywords: Active rectifier, voltage converter, inverting converter, multi-channel power supply , the conversion factor.