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A technology of the enhancement of the power efficiency of steam turbine plants (STPs) is pro posed by the treatment of surfaces of a piped condenser system over the steam and water sides with the use of surface active substances (SAS). The transition of filmwise condensation into dropwise makes it possible to increase the heat transfer coefficient by 50-70% because of hydrophobization of outside surfaces of the steam side that results in vacuum extension at minimum operating costs. The resulting data are verified by laboratory investigations and full scale tests. The accumulation rate of thermobarrier deposits over the water side decreases by a factor of 6-8, and, correspondingly, the overhaul life connected with the refinement of condenser pipes increases. The maintenance of the hydrophobic film of SAS at the outside surface of con denser pipes can be provided by the periodic injection of SAS on the inlet of a low pressure cylinder (CLP) of the turbine both in the period of short time stops and during the operation of STPs. At the same time, because of the additional dispersion of the liquid phase, the rate of drop impact erosion of the blade row decreases by 30%.

The current state of the power engineering industry of the Russian Federation is characterized by high wear, low energy efficiency and the necessity for the reconstruction and modernization of a considerable amount of its energy facilities. Due to the impossibility of the construction and commissioning of a large number of facilities, the development and implementation of technologies, as well as and extending the lifespan of existing equipment in order to improve energy efficiency of power plants, remain urgent tasks. Film-forming amines are well known (Moscow Power Engineering Institute, National Research University (MPEI NRU) has been using them for over 40 years now) and are widely used in power engineering. On the basis of numerous experimental studies and industrial approbations, MPEI NRU have designed a group of technologies to address some of the problems encountered in the operation of power equipment.A wider implementation of the developed technologies will significantly improve the efficiency, reliability and service life of power units and NPP second circuits.

The analysis of the results of large-scale work on the introduction of the facilities of complex technology, based on changing the functional surface properties of pipelines and heat power equipment using surface-active substances (SAS) technology is carried out. The volume of SAS technology realization has been specified in the heating supply systems of the Russian Federation's cities since 2003. An evaluation of the technical and economic efficiency of SAS technology, as an example of the typical elements of district heating systems based on hot water heating plants, including their boilers, heating networks, heating stations and buildings heating systems, is presented.

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