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Topic

Technical equipment testing

Volume

Volume 68 / No. 3 / 2022

Pages : 201-210

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ANALYZING THE HOMOGENEITY IN THE REDUCTION OF WATER CONTENT DURING THE DRYING PROCESS OF GRAINS USING A FLATBED DRYER MACHINE EQUIPPED WITH A STIRRING MECHANIZATION SYSTEM

PEMBUKTIAN HOMOGENITAS PENURUNAN KADAR AIR DI PROSES PENGERINGAN BIJI-BIJIAN MENGGUNAKAN MESIN FLATBED DRYER YANG DILENGKAPI SISTEM MEKANISASI PENGADUKAN

DOI : https://doi.org/10.35633/inmateh-68-20

Authors

Dandy Z. SJECHLAD

Diponegoro University, Mechanical Engineering

(*) Susilo Adi WIDYANTO

Diponegoro University, Mechanical Engineering Department

(*) Bambang PURWANGGONO

Diponegoro University, Industrial Engineering Department

(*) Munadi MUNADI

Diponegoro University, Mechanical Engineering Department

(*) Corresponding authors:

[email protected] |

Susilo Adi WIDYANTO

[email protected] |

Bambang PURWANGGONO

[email protected] |

Munadi MUNADI

Abstract

Uneven drying is a prominent problem in the performance of Flatbed type grain dryer. An effort to move around the materials during the drying process is needed in order to get a uniformed drying rate. This paper investigates the conditions of an evenly distributed reduction of materials' water content during drying, using a flatbed dryer and a stirring mechanization system. It is found that ≥ 4rpm stirring rotation produces a relatively even drying result after 1 hour, and that there exists a second airflow that leaked due to the stirring process moving around with the motion of the stirrer.

Abstract in English

Hasil pengeringan yang tidak rata merupakan masalah utama dalam kinerja mesin pengering biji-bijian tipe Flatbed. Diperlukan upaya pengadukan komoditas bahan yang dikeringkan agar laju pengeringannya seragam. Pada penelitian ini akan khusus menginvestigasi kondisi kerataan distribusi penurunan kadar air dari komoditas bahan yang dikeringkan tersebut dengan menggunakan pengering type Flatbed yang dilengkapi sistem pengaduk otomatis. Hasil pengujian menunjukkan di putaran pengadukan ≥ 4rpm, setelah 1 jam pertama pengeringan, kerataan pengeringan yang relatif seragam antar lapisannya. Dibuktikan pula pada hasil pengujian bahwa terdapat aliran udara kedua yang bocor akibat proses pengadukan yang berpindah-pindah mengikuti pergerakan pengaduk.

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