Numerical analysis of flow in a modular heat exchanger used in food industrial plants

Abstract

In the article is proposed a construction of modular cross-flow heat exchanger. This construction can be used in food industrial plants for example to heating a palm oil for a chips production. The second possibility to make use of that heat exchanger in a food industrial plants will be a heating of a worn out rape oil after a technological process for a improvement of effective utilization in oil boiler. The main advantage of modular heat exchangers is the possibility of simple adjustment of heating power dependent on demand. It is possible by valve system, which can cut off subsequent sections of the heat exchanger from the plant when heat requirement is decreasing. During a numerical simulation was demonstrated, that an exhaust gases flow in a heat exchanger is not homogenous. In numerical analysis was obtained a real flow velocity distribution and temperature distribution for a full geometry of the designed object and for two subsequent section of the heat exchanger.