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Thermal conductivity of food products

100%

Aerlichman V. N., Fatychov J. A., Kukelka L., Kopec A.

Acta Agrophysica

2014

tom 21

nr 2

The presented work is focused on the food thermal characteristics calculation methods (heat conductivity coefficient  and thermal diffusivity coefficient a). Thermal characteristics of food are important in food industry and define the intensiveness of technological processes of food refrigeration and thermal treatment, energy consumption for their realization and technological equipment production rate. They are also needed for the building and validation of mathematical models of heat transfer in food products which are useful in the design and optimisation of freezing, heating, cooking and cooling processes and equipment. It is not easy to define the food thermal characteristics. Difficulties arise from their heterogeneity, high labour consumption and complexity of experimental sets. Methods for experimental determination of heat conductivity coefficient  and thermal diffusivity coefficient a based on the regular method mode require the α → ∞ condition, which is the case of high speed of the environment which flows around the test sample, as in the case of boiling or condensing. Using the method presented in this article it is possible to determine the heat conductivity  and thermal diffusivity coefficient a even in the absence of the condition α → ∞.

Ograniczanie wyników

1 Acta Agrophysica

1 Aerlichman V. N.

1 Fatychov J. A.

1 Kopec A.

1 Kukelka L.

1 2014

Wyniki wyszukiwania

Thermal conductivity of food products