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Air source heat pump drying process for green prickleyash

A technology of air source heat pump and green pepper, which is applied in food processing, food science, food preservation, etc., can solve the problems of high production cost, low energy utilization rate, and high heat loss, so as to prevent the action time from being too long and reduce heat Dissipation, the effect of ensuring the drying rate

Pending Publication Date: 2022-07-12
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The material storage area in the green pepper drying industry generally adopts a brick drying space, and the energy circulation mode during the drying process is mostly open, resulting in a lot of heat loss, serious power consumption, and high production costs
The drying process of green pepper is usually designed according to experience, with high randomness and poor adaptability. There are few studies on chlorophyll degradation during the drying process, and the ind

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the present embodiment, an air source heat pump drying process for green prickly ash according to the present invention comprises the following steps:

[0029] (1) Pretreatment, screening out rotten, mildew and other damaged fresh green pepper;

[0030] (2) Laying green pepper; during the experiment, it was found that the thickness of the laying has a certain relationship with the color difference of dried green pepper, and other factors such as wind speed can be determined according to the thickness of the laying;

[0031] (3) The temperature and humidity in the drying space are controlled in stages, which are divided into a constant temperature stage and a variable temperature stage. The time of the dehumidification stage is determined by the humidity in the drying space, and it is possible in the constant temperature stage or the variable temperature stage. The staging can be controlled manually or automatically. The specific stages are as follows:

[0032] ①The...

Embodiment 2

[0037] In this embodiment, a constant temperature process is adopted, which is mainly used to compare the color and luster quality of Chinese prickly ash with the process of the present invention.

[0038] Set 40 ℃, 50 ℃, 60 ℃ constant temperature drying, the results show that the color difference is the smallest at 40 ℃, and the color quality of dried green prickly ash is better.

Embodiment 3

[0040] In this embodiment, traditional drying is used, which is mainly used to compare power consumption with the process of the present invention.

[0041] Table 1 Comparison of different dryings.

[0042] craft Chromatic aberration drying time Exterior this invention 16.79 15 emerald green 40℃ constant temperature process 18.93 17.43 greener traditional drying 17.48 18 yellowish

[0043] Compared with the constant temperature drying process and the traditional variable temperature drying process, the drying process of the present invention reduces the color difference by 11.3% and 3.95% respectively, increases the aperture ratio by 19.59% and 11.56% respectively, and increases the effective water diffusion coefficient by 15.42% and 5.77% respectively. Compared with the traditional drying power consumption, the drying process of the invention reduces about 15%.

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Abstract

The invention relates to the technical field of green prickleyash processing, in particular to a green prickleyash air source heat pump drying process. Comprising the steps of pretreatment, laying of green prickleyash, staged control of temperature and humidity in a drying space, a constant-temperature stage and a variable-temperature stage, and determination of color quality of the dried green prickleyash. When the moisture ratio of the green prickleyash is reduced to 10%, drying is finished, and chlorophyll content or chromatic aberration is measured through sampling. Compared with a constant-temperature drying process and a traditional variable-temperature drying process, the drying process provided by the invention has the advantages that the color differences are respectively reduced by 11.3% and 3.95%, the aperture opening ratios are respectively increased by 19.59% and 11.56%, and the effective moisture diffusion coefficients are respectively increased by 15.42% and 5.77%. Compared with traditional drying, the drying process has the advantages that the electric energy consumption is reduced by about 15%, the color quality of green prickleyash is improved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of processing of Chinese prickly ash, in particular to an air source heat pump drying process of prickly ash. Background technique [0002] Drying is an important process to ensure the convenient transportation or storage of materials, and is a common technology in agricultural production. Air source heat pump drying refers to the method of supplying hot air through the air source heat pump system, and then baking the materials in the drying space and taking away the moisture in the materials. [0003] Air source heat pump drying technology has the characteristics of low carbon and environmental protection, easy to control drying process, etc. It is a drying method with low energy consumption, good drying effect and wide application range. . Green prickly ash has a strong seasonality, in order to facilitate its transportation and storage, it needs to be dried. Nowadays, air source heat pump or coal is gen...

Claims

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Application Information

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IPC IPC(8): A23L3/40G01N21/25G01N21/31
CPCA23L3/40G01N21/25G01N21/31A23V2002/00A23V2300/10Y02P60/85
Inventor 王子轩武逸凡刘恩谷谭均乐嘉俊柳艺杨玲蒲应俊李守太杨明金
Owner SOUTHWEST UNIVERSITY
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