Published in Thermal Engineering
Abstract—For estimating the reliability of existing and newly developed circuit diagrams of heat networks, a special procedure is applied. By applying this procedure, which uses such input data as the length and operation time of pipeline segments, it is possible to determine the availability factors and probabilities of failure-free operation for ...
Published in Thermal Engineering
Abstract—The article considers the specific features of and prospects for improving the efficiency of geothermal power plants (GeoPPs) that use a steam–water mixture from geothermal fields and steam superheating as an energy source. The process flow diagram of a combined binary-cycle GeoPP with two separation pressures and flashed steam superheatin...
Published in Thermal Engineering
Abstract—Numerous substances and complex chemical agents, as well as various biocides for inhibiting the growth of microbial colonies and algae, are commercially available in the market of water treatment chemicals. In frequent cases, the chemicals offered in the market are not adapted to the water chemistry conditions of power plant circulating co...
Published in Thermal Engineering
Abstract—The article discusses the possibilities for and results of structural changes in the electric power industry of Russia, which performs the integrating function for the country’s fuel and energy complex during its transformation in the context of various scenarios supposed for the world’s technological transition to the use of noncarbon ene...
Published in Thermal Engineering
AbstractHeat and mass transfer processes and decomposition of organic compounds in a pyrolysis reactor are simulated using the ANSYS Fluent software package. Simulation of the pyrolysis of organic compounds, in contrast to simulation of their combustion, is dealt with only in a few studies. However, there are many engineering applications of this p...
Published in Thermal Engineering
AbstractThe demineralization of clarified water is carried out in TPPs, NPPs, and combined-cycle boiler houses in Russia, as a rule, using a chemical or membrane method. Conventional chemical demineralization prevails, and the number of reverse osmosis plants is constantly increasing. When choosing the demineralization technology, the main criteria...
Published in Thermal Engineering
AbstractPiping heat insulation consisting of mineral wool as the main layer and a fiberglass cover is deformed and suffers damages during day-to-day operation. This increases the heat losses through insulation when a heat carrier flows through the pipeline. This investigation is devoted to the use of a thin-film coating (TFC) in the arrangements of...
Published in Thermal Engineering
AbstractProblems in planning and implementation of the operating conditions for district heating systems (DHSs) are directly related to the controllability and permissibility of the conditions and the reliability, quality, and efficiency of the heat supply systems’ operation under various operating conditions. The operating conditions’ development ...
Published in Thermal Engineering
Abstract—The article considers the specific features related to operation of the power valve and orifice lines within turbine plant piping systems whose inlets receive water medium with saturation parameters (separated moisture or condensate). It is shown that transportation of working medium in these piping systems is accompanied by pressure drop,...
Published in Thermal Engineering
AbstractThe effect of heat conduction in the wall on temperature distribution along a heat exchanger with parallel flow of heat carriers and on heat exchanger effectiveness has been investigated. The problem was solved based on a system of one-dimensional (cross-section averaged) energy equations for two heat carriers and the heat conduction equati...
