Postnikov I.V., Stennikov V.A., Mednikova E.E., Penkovsky A.V. Methodology for optimization of component reliability of heat supply systems // Applied Energy. In press. 2017. DOI: 10.1016/j.apenergy.2017.11.073 The paper suggests a methodology to determine optimal reliability parameters (failure and restoration rates) of heat supply system components, which provide the required level of heat supply reliability. The methodological approach consists in the economically rational distribution of the...
Теги: component reliability , failure and restoration rates , heat supply system , markov random process , nodal reliability indices , reliability optimization , failure analysis , heat storage , heat transfer , hydraulic equipment , hydraulic machinery , iterative methodShalaginova Z.I. Mathematical model for calculation of the heat-hydraulic modes of heating points of heat-supplying systems // Thermal Engineering . Vol.63. No.3. 2016. P.222-232. DOI: 10.1134/S0040601516020075 http://rd.springer.com/article/10.1134/S0040601516020075 The mathematical model and calculation method of the thermal-hydraulic modes of heat points, based on the theory of hydraulic circuits, being developed at the Melentiev Energy Systems Institute are presented. The redundant circuit of...
Теги: calculations , complex networks , computer software , data handling , heating , heating equipment , hydraulic equipment , hydraulic machinery , hydraulic models , hydraulic structures , mathematical models , recTairov E., Khan P. Modeling the mass velocity and pressure drop of forced vapor-liquid flow through a granular bed // International Journal of Multiphase Flow. Vol.133. ID: 103466. 2020. DOI: 10.1016/j.ijmultiphaseflow.2020.103466 The paper considers the approaches frequently used to model pressure drop in a granular layer. These are a model of a hydraulic circuit element, a Lockcart–Martinelli model, and a generalization of the Darcy–Forchheimer model. A new model, representing a generalization...
Теги: calculation models comparison , experimental data , granular bed , mass velocity , pressure gradient , steam-water flow , drops , gas dynamics , hydraulic equipment , pressure drop , velocity , forchheimer models , gas dynamics equations , granular layer , hydraulic ciPenkovskii A.V., Stennikov V.A. Mathematical Modeling of the Heat Energy Market on a Single Heat Supplier Basis // Thermal Engineering . Vol.65. No.7. 2018. P.443-452. DOI: 10.1134/S0040601518070078 Organizational models of the heat energy market on a Single Heat Supplier basis (SHS) operating in free (liberalized) and regulated tariff environments are considered. An equilibrium mathematical model is proposed for the liberalized tariff setting conditions based on a microeconomic monopolistic market...
Теги: heat energy market , heat supply , mathematical modeling , optimization , single heat supplier , circuit theory , commerce , costs , hydraulic equipment , hydraulic machinery , iterative methods , mathematical models , solar buildings , economic characteristics , enginStennikov V.A., Barakhtenko E.A., Sokolov D.V. Use of multilevel modeling for determining optimal parameters of heat supply systems // Thermal Engineering . Vol.64. No.7. 2017. P.518-525. DOI: 10.1134/S0040601517070096 The problem of finding optimal parameters of a heat-supply system (HSS) is in ensuring the required throughput capacity of a heat network by determining pipeline diameters and characteristics and location of pumping stations. Effective methods for solving this problem, i.e., the method...
Теги: algorithms , heat-supply system , multilevel modeling , optimization methods , procedure , software system , circuit theory , complex networks , computer software , construction equipment , hierarchical systems , hydraulic equipment , hydraulic machinery , optimizatioStennikov V.A., Mednikova E.E. Analysis of trends in the development of cities’ heat supply systems // Thermal Engineering . Vol.63. No.9. 2016. P.657-665. DOI: 10.1134/S0040601516090068 http://rd.springer.com/article/10.1134%2FS0040601516090068 New challenges—including the modern urban development policy, formation of the market of energy efficient technologies and different types of equipment of a broad power capacity range, tightening requirements to reliability, quality, and economic accessibility...
Теги: efficiency , energy efficiency , hydraulic equipment , planning , thermal load , urban growth , zoning , centralization levels , decentralized heating , energy efficient technology , heat load density , heat supAlekseev A.V. Study of the forecasting problem of energy consumption of water pumping station // E3S Web of Conferences. Vol.102. ID: 03001. 2019. DOI: 10.1051/e3sconf/201910203001 The article describes the study of the energy consumption forecasting of city water pumping station. The review of the existing approaches for technical systems energy consumption forecasting is made. The shot description of the studied object properties including hourly energy consumption is presented. Two often used...
Теги: energy utilization , hydraulic equipment , pipelines , pumping plants , regression analysis , exponential smoothing , forecasting methods , forecasting problems , moving average method , object property , technIlkevich N.I., Dzyubina T.V., Kalinina Z.V. Innovative transformations of a model for flow distribution in gas systems and their new properties // E3S Web of Conferences. Vol.102. ID:148852. 2019. DOI: 10.1051/e3sconf/201910202004 The methods of network analysis are widely used in mathematical modelling of optimal gas flows to solve the problems of long-term planning and development of gas systems. However, the modern development of gas systems, their renovation and modernization require that the...
Теги: flow of gases , hydraulic equipment , mathematical transformations , pipelines , flow distribution , gas supply system , gas systems , long term planning , modern development , renovation and modernization , trGrebneva O.A. Study of the measurements placement problem for planning of the optimal experiment // E3S Web of Conferences. Vol.102. ID: 03006. 2019. DOI: 10.1051/e3sconf/201910203006 Both in Russia and abroad, there are works that are devoted to the problem of optimal placement of measuring devices, which are evidenced by the current literature. The proposed methods are not universal, that does not allow them to be directly used for different types of pipeline systems. In addition, the developed...
Теги: hydraulic equipment , numerical methods , pipelines , piping systems , water pipelines , finite number , global solutions , mathematical formulation , measuring device , optimal experiments , optimal placementsIlkevich N.I., Dzyubina T.V., Kalinina Z.V. Development of analysis methods for ensuring the reliability of gas distribution systems in the problems of complex energy supply // E3S Web of Conferences. Vol.102. ID:148852. 2019. DOI: 10.1051/e3sconf/201910202005 The paper deals with the issues devoted to reliability studies of gas distribution systems for complex energy supply of large industrialized areas. Given is a brief review of the reliability assessment methods, existing models for reliability...
Теги: energy resources , gases , hydraulic equipment , pipelines , analytical method , failure and recoveries , failure-free operations , gas distribution , integral indicators , linear sections , reliability assessm
