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.
Highlights
The food industry is one of a big beneficiary of heat usage for a production process
Numerical analysis of a temperature distribution for exhaust gases in whole heat exchanger geometry shows, that an average temperature in the outlet of the heat exchanger is equal to 215 C. It means that a temperature difference between inlet and outlet of the heat exchanger is less than the assumption in analytical calculations
Realized analytical and numerical calculations allowed to show the character of a work for a simple construction of heat exchanger for a food industrial plants
Summary
The food industry is one of a big beneficiary of heat usage for a production process. Necessarily is a dosage of an amount of heat delivered. Authors of a paper analyzed a heat transfer process for a palm oil heating in a food industrial plant for a chips production. For a heating medium in a designed heat exchanger was a waste heat used from a heating boiler, which is used for a steam generation in another process, which is realized in the industrial plant. This heating boiler reaches a nominal power equal to 4 MW. The second possibility of heat exchanger application is heating an used palm oil after a production for a reprocessing process. A scheme of a heat recovery plant is shown in figure 1
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