Applied Physics and Mathematics Annotation << Back ANALYSIS OF OPERATING MODES OF A CLOSED CIRCULATION COOLING CIRCUIT WITH AN INTERMEDIATE HEAT CARRIER V.I. RYAZHSKIKH, Yu.Yu. GROMOV, A.V. RYAZHSKIKH, A.A. KHVOSTOV Assuming that the heat-absorbing and heat-dissipating components of the closed circulation cooling circuit belong to elements with hydrodynamics close to ideal displacement, and the heat in them is transferred by a convective mechanism without taking into account the thermoresistance with a uniform distribution of sources and sinks, a mathematical model is proposed for determining the nonstationary local temperatures in Form of the initial-boundary value problem for a system of fi rst-order partial diff erential equations. An analytical solution is obtained, which confi rmed the existence of an autooscillatory mode in the circuit. The condition for the existence of a stationary regime is indicated. Trend averaging of the equations with respect to the axial coordinates made it possible to estimate the reference local temperatures in the circulation loop and to identify the relaxation time to the stationary regime. Using the example of a circulating circuit with a porous heat exchanger and a thermoelectric cooler, the effi ciency of the proposed approach for estimating the design of such systems is shown. Keywords: heating, cooling, coolant, circuit, analytical solution. Contacts: E-mail: gromovtambov@yandex.ru Pp. 20-26.