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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Varsegova Evgeniya Vladislavovna candidate of physic-mathematical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kareeva Yuliya Rustemovna candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization adress: 420043, Russia, Kazan, Zelenaya st., 1 Zolotonosov Yakov Davydovich doctor of technical sciences, professor, director E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it LLC «Progress» The organization address: 420137, Russia, Kazan, Chuikova st., 71
Title of the articleResearch of heat exchange process in pipes with difficult geometry of «pipe in pipe» apparatus type
Abstract.Problem statement. The goal of research is to analyze heat exchange process in pipes with difficult geometry of «pipe in pipe» apparatus type. Pipes represent sequence of alternating sections of confuser, straight and diffuser of different length. Application of such elements requires wide experimental research. The research sometimes requires significant financial expenses. the authors carried out numerical studies for cost reduction. Results. Main results of the research: the stationary Reynolds average Navier-Stocks equations in a cylindrical coordinate system with the angularly symmetry were recorded, taking into account the dependence of dynamic viscosity on temperature with boundary conditions reflecting the geometry of the flow path of the channel. Numerical implementation made it possible to formulate the dependences of the Nusselt criterion on the Reynolds number, to obtain criterial equations for three types of pipes. Comparison of the efficiency of round pipes with pipes of complex geometry is made. It has shown that the proposed heat exchange elements are more efficient. Conclusion. The significance of the received results for construction industry is that authors suggest a full set of innovative heat exchange equipment.
Keywords.numerical method, heat exchange, hydrodynamics, tube in tube, heat exchange element «confuser-diffuser».
For citations:Varsegova E.V., Kareeva Y.R., Zolotonosov Y.D. Research of heat exchange process in pipes with difficult geometry of «pipe in pipe» apparatus type // Izvestiya KGASU. 2019. №3(49) P.132-138.


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