Resumo

GUTIERREZ TOLEDO, David Ramón et al. Determination of Thermic Parameters of a Heat Exchanger of Concentric Tubes with Organic-Steam Fluids. Rev Cie Téc Agr [online]. 2018, vol.27, n.1, pp.76-88. ISSN 2071-0054.

The present research was carried out for the grinding line at the Tinned Food and Vegetables Factory in Yara Municipality, Granma, which belongs to the Basic Business Unit from this province. The objective was aimed at determining the thermic parameters of a Heat Exchanger (HE) of concentric tubes which permits to guarantee heating and sterilization of organic fluid for the seed- skin separation of some vegetables. In this direction, it was proposed a methodology of calculation based on the foundations of Technical Thermodynamics and Heat Transference for the subsequent assembling and mounting of HE at workplace. Among the most relevant outcomes it was obtained a 61% of the machine’s efficiency. Other results are the determination of the heat transference area with 6,697 m². This constitutes a consequence of losses by radiation and convection, which are unavoidable in these types of machines of food industry since it is not possible to achieve a thermic isolation to guarantee food innocuousness. On the other hand, organic fluids outlet temperatures are maintained according to the normative between 85°C and 115°C.

Palavras-chave : Heat transference; losses due to convection; exchanger’s efficiency.

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