Publication: Estimation of parameters of energy systems on the basis on the theory of stochastic equations and equivalence of measures
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2021
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© 2021 Pushpa Publishing House, Prayagraj, India.The problem of efficient use of low-grade heat based on the organic Rankine cycle (ORC) in stationary energy transport complexes seems relevant. In particular, this task is typical for boiler houses that are converted from heavy fuel oil to gas. In this case, the efficiency of the ORC application will primarily be determined by the efficiency of the used heat exchangers (HE) with a phase transition. Therefore, the task of designing and calculating the optimal characteristics of these HE is both technically and theoretically relevant. In this regard, the article presents a computational-theoretical model of heat transfer during phase transitions in turbulent flows based on the relations obtained by the stochastic theory of hydrodynamics and heat transfer. The modeling of the influence of turbulence during the phase transition with boiling of the bubble regime is considered. The comparison results show satisfactory agreement of the values according to the formula obtained on the basis of stochastic equations with the values calculated according to the empirical formula for the flow in a pipe used in the engineering method of designing heat exchangers. The results open the prospect of studying the processes of heat transfer during phase transitions in turbulent flows in heat exchangers, in order to reduce their overall and mass characteristics, as well as to increase the energy efficiency of both the devices themselves and the efficiency of the entire energy systems.
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Kolosova, M. A. Estimation of parameters of energy systems on the basis on the theory of stochastic equations and equivalence of measures / Kolosova, M.A., Chernyshov, V.N., Dmitrenko, A.V. // JP Journal of Heat and Mass Transfer. - 2021. - 23. - № 1. - P. 69-79. - 10.17654/HM023010069