EDN: VRNWUZ
Authors & Affiliations
Smirnov A.M., Morozov A.V.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
Smirnov A.M. – Engineer. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga Region, Russia, 249033. Tel.: +7 (484) 399-70-00 (43-19); e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Morozov A.V. – Leading Researcher, Dr. Sci.(Tech.).
Abstract
Increasing the export of national nuclear technologies to other countries is one of the main strategic development goals of the Rosatom State Corporation. It is obvious that for further development in this direction, it is advisable to strive to reducing total costs for the construction of the main export product of Rosatom State Corporation — a nuclear power plant with the VVER-1200 reactor. This is especially relevant because of the intense growth of competition in the nuclear technology market observed in recent years. One of the ways to improve the economic characteristics of a power unit is to reduce the cost of passive safety systems while maintaining their design functions. The report proposes a method for optimizing the passive heat removal system (PHRS) of the VVER-1200 reactor, which consists in reducing the surface area of air heat exchangers while using a finely dispersed water spray to intensify the heat removal process to ensure the power characteristics inherent in the project. As part of a more detailed study of the proposed method of optimization, numerical CFD modeling of water aerosol cooling of the heat exchange tube of the passive heat removal system in the ANSYS software package was carried out. The values of the main heat transfer parameters with using water spray with different characteristics were obtained. In addition, a comparative analysis of the data obtained with similar results of cooling the heat exchange tube with dry air was carried out in order to prove the feasibility of using aerosol cooling.
Keywords
VVER, passive heat removal system (PHRS), optimization, air heat exchanger, water spray, dry air, coefficient of increasing heat transfer, numerical simulation, heat transfer, mass fraction of water in water spray, mean diameter of droplets, speed of flow
Article Text (PDF, in Russian)
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UDC 621.039.58:536.423.4
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2024, no. 4, 4:20
