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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.Valiullin M.A. – candidate of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Zamaleev Z.Kh. – candidate of technical sciences, associate professor Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaja st., 1
Title of the articleThe study of hydraulic characteristics of nodes of heating devices for residential heating systems made of PEX-pipes
Abstract.At present days in reference literature there are practically no data on the hydraulic characteristics of pipes made from the sewn high strength polyethylene (РEX). However, these pipes are widely used in the residential heating systems of energy-efficient buildings. The way out of this situation can be found in the experimental investigations, the result of which would be the data on the hydraulic characteristics of knots consisting of modern locking-regulating valves, fittings and PEX-pipes. In apartment heating systems the various knots with various schemes of connection of heating devices can be used. For the hydraulic calculation of such heating systems it is necessary to have data on hydraulic resistance coefficient of knots of heating devices at various levels of setup of balancing valves and at various positions of adjustment of an expense of the heat carrier. The values of coefficient of hydraulic friction and the characteristics of resistance of PEX-pipes themselves, as well as the coefficients of local resistance of nodes for the apartment heating systems from PEX-pipes were obtained in the KSUAE laboratories at different levels of customization balancing valves and different positions of the heat carrier flow control regulators, and this data can be used by designers and experts in the field of heating in the calculation of such systems.
Keywords.PEX-pipes, reduced coefficient of local resistance, coefficient of hydraulic friction, specific resistance characteristic, node of heating device.
For citations:Valiullin M.A., Zamaleev Z.Kh. The study of hydraulic characteristics of nodes of heating devices for residential heating systems made of PEX-pipes // Izvestiya KGASU. 2014. №4(30) P.244-248.

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