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Corresponding Author(s)

巨浩羽（1989—），男，河北经贸大学副教授，博士。E-mail：[email protected]

Abstract

[Objective] To address the issues of uneven product quality, limited loading capacity, and the inability to achieve continuous drying in existing gas jet impingement dryers, a novel belt -type gas jet impingement dryer is designed to enhance the practicality and drying performance of the equipment. [Methods] The belt -type gas jet impingement dryer mainly consists of an airflow distribution chamber, a drying chamber, a centrifugal fan, a temperature control system, and a transmission system. The conveyor belt speed, airflow temperature, and air velocity can be adjusted according to the different materials. Simulations are conducted using Fluent software for airflow distribution chambers with different nozzle diameters and with the addition of flow -equalizing plates of varying grid sizes. Drying performance experiments are carried out using potato slices as the material, and the results are compared with those of conventional hot air drying equipment. [Results] A nozzle diameter of 20 mm achieves superior performance in airflow distribution. After incorporating a flow -equalizing plate into the airflow distribution chamber, the plate with an 8 mm ×680 mm grid size yields the best results, reducing the velocity non -uniformity coefficient from 34.74% to 8.54% and the maximum velocity deviation ratio from 36.08% to 15.45%. Compared with a hot air dryer, the belt -type gas jet impingement dryer shortens the drying time by 42.51%, increases the drying rate by 254%, and significantly improves the drying efficiency. [Conclusion] The belt -type gas jet impingement dryer can significantly improve drying |uniformity and efficiency.

Publication Date

10-21-2026

First Page

94

Last Page

102

DOI

10.13652/j.spjx.1003.5788.2025.81215

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