BIOSCIENCES BIOTECHNOLOGY RESEARCH ASIA, September 2015. Vol. 12(Spl. Edn. 2), p. 563-569 * To whom all correspondence should be addressed. Simulation of Heat Transfer and Fluid Dynamics Processes in Shell-and-Pipe Heat Exchange Devices with Segmental and Helix Baffles in a Casing Rinat Shaukatovich Misbakhov 1 , Victor Mihaylovich Gureev 2 , Nikolai Ivanovich Moskalenko 1 , Andrey Mihaylovich Ermakov 2 and Ilyas Zul’fatovich Bagautdinov 1 1 Kazan State Power Engineering University, Russia, 420066, Kazan, Krasnoselskaya st., 51. 2 Kazan National Research Technical University named After A.N. Tupolev, Russia, 420111, Kazan, Marx st., 10. doi: http://dx.doi.org/10.13005/bbra/2070 (Received: 09 June 2015; accepted: 26 July 2015) Increase of heat exchange in shell-and-pipe heat exchange devices allows to decrease cost, dimensions and weight of heat exchange equipment. The main directions in a field of increase of heat exchange are application of surface intensifiers on pipes of a heat exchange devices, in a case there is a need to increase heat exchange of a heat transfer agent inside pipes, and application of various types of baffles, in a case there is a need to increase casing heat exchange. The paper presents the results of the study of increase of heat exchange in a casing by means of segmental and helix baffles; circular baffles were not taken into account, because in that case mechanism of increase of heat exchange is the same with segmental baffles and has the same disadvantages, such as dead zones before and after the baffles. In the study we developed solid state models of heat exchanging devices with segmental and helix baffles created finite-element models, carried out numerical studies of heat exchange and fluid dynamics processes in shell-and-pipe heat exchange devices with segmental and spiral inserted baffles at various flow conditions of a heat transfer agent. Also, values of coefficients of heat transfer, heat flow, flow structure and pressure losses in pipes and casing at various flow conditions are obtained. Application of baffles allows to increase heat flow for a whole range of flow conditions. The biggest effect in absolute values of heat flow is achieved by means of implementation of helix baffles, however, it also leads to the biggest values of hydraulic losses. The main advantage of helix baffles is uniform distribution of a heat transfer agent in a casing and absence of dead zones, which are formed in a case of segmental baffles. Key words: Intensifier, Heat transfer, Simulation, Heat exchange, Flow structure. Nowadays, one of the most expensive energy resources is heat energy. Its high cost is caused by both the problems its production (low efficiency heat generating equipment, increased cost of fuel, significant production expenses), and problems of its effective transfer and use. Heat energy from a moment of production to a moment of consumption is transfered several times in heat exchanging devices (HED) and heat exchanging elements, which thermal efficiency coefficients often do not exceed 40-70%. In the energy sector of Russia shell-and- pipe HED are still the most used type of that kind of devices. At that, that kind of HED belong to smooth pipe type, which have significant dimensions, high degree of dirt adherence and short service life of a pipe bank. Moreover, increasing capacity of various energy equipment causes significant thermal and dynamic loads. The problems of decrease of weight and dimensions of heat exchange equipment and