Flow and heat transfer process numerical simulation analysis method of hot air drum type phoenix single fir tea leaf fixation machine

Abstract

The invention discloses a flow and heat transfer process numerical simulation method of a hot air drum type phoenix single fir tea leaf fixation machine, and uses the hot air drum type phoenix singlefir tea leaf fixation machine which is scientific and reasonable in structure, good in fixation effect, high in efficiency, low in cost and easy to realize. According to the numerical simulation analysis method for the flow and heat transfer process in the fixation machine, calculation fluid dynamics software FLUENT is adopted for carrying out numerical calculation on the dehydration process of tea leaves in the drum-type fixation machine and the accompanying heat exchange and mass transfer process between the tea leaves and hot fluid, high cost and raw material waste caused by experiments orblind design are avoided, and the method has certain guiding significance for improving the fixation quality of the tea. High cost and technical risks caused by tests or blind design are avoided to acertain extent; programs of the numerical simulation analysis process are easy to implement, and the method has remarkable value in application of the efficient tea leaf fixation process.

Description

technical field [0001] The invention relates to an experimental analysis method of actual working conditions in drying process equipment, in particular to a method for numerical simulation analysis of the flow and heat transfer process of a hot-air drum type Phoenix Dancong tea greening machine, which is applied to the greening process technology field. Background technique [0002] my country is the origin of tea trees and has a long history of tea production. According to data from the National Bureau of Statistics, in 2018, the state-owned tea garden area was 2,985,800 hectares, and the tea picking area was 2,310,760 hectares; the output of tea was 2,610,400 tons. The planting scale of tea in my country ranks first in the world, and the domestic and global tea consumption is generally on the rise every year, so tea trees have high economic value. Tea greening is to destroy and passivate the oxidase activity in fresh tea leaves by high temperature, inhibit the enzymatic ...

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Problems solved by technology

[0004] At present, most of our country adopts hot finishing, by heating rollers or pots and other finishing machines, but there are defects such as uneven finishing and low heat utilization rate.

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