New issues - Известия Казанского государственного архитектурно-строительного университета.

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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.Baidyusenov Galym Nurzhanovich post-graduate student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Abildinova Saule Kianbekovna associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Elemanova Aliya Alikovna senior lecturer E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Almaty University of Power Engineering and Telecommunications The organization address: 050013, Kazakhstan, Almaty, Baytursynov st., 126 Sadykov Renat Ahatovich doctor of technical sciences, 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 address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleEfficiency of polyurethane foam pipes in the modernization of heating systems
Abstract.Problem statement. The purpose of the study is to assess the loss of thermal energy through the insulating structures of pipelines with polyurethane foam, taking into account the method of laying pipelines and additional factors that arise during the operation of heat networks. The technical potential for improving the efficiency of the use and transportation of thermal energy in heat supply systems depends on the condition of the heating networks. For modernization and reconstruction of heating systems of Kazakhstan currently used pre-insulated pipes made of polyurethane foam, which provide high reliability and minimal energy loss. The directions of work for modernization and reconstruction of existing heating systems are indicated. Results. Calculations of heat losses through the insulation of main pipelines with different standard diameters are carried out. In calculations, the standard technique of definition of a heat loss considering the additional factors connected with the operation of pipelines at the channel and channel-free laying of a heating system is used. The calculated specific heat loss of main pipelines with polyurethane foam insulation when the temperature of the medium does not exceed the standard values of heat loss under the same conditions. The obtained results create objective prerequisites for the revision and adjustment of the existing standards of heat loss in heat supply networks, which can increase the efficiency of heat energy transportation. Conclusions. The significance of the results obtained for the construction field is that the proposed calculation methods confirm the reduction of normative and excess heat energy losses when using polyurethane foam pipes. The calculations show the effectiveness of the thermal insulation design of polyurethane foam and allow us to estimate the heat loss.
Keywords.thermal insulation, pipelines, polyurethane foam, heat loss, thermal resistance.
For citations:Baidyusenov G.N., Abildinova S.K., Elemanova A.A., Sadykov R.A. Efficiency of polyurethane foam pipes in the modernization of heating systems // Izvestiya KGASU. 2020. №1(51) P.109-117.


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