Experiemental study on solar dryer with extended flat plate collector

Qadry, Al; Hutagalung, Tommy Rizky; Harry, Kevinta J.M; Napitupulu, Richard A.M.; Ambarita, Himsar

doi:10.1088/1757-899x/725/1/012018

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…It has previously been observed that solar dryers using a box or table are suitable for drying coffee beans. Drying rate depends on solar radiation intensity and wind velocity [10].…”

Section: Methodsmentioning

confidence: 99%

Drying and sortation to improve green beans and cup quality of Wamena coffee

Adnan¹,

Lestari²

2021

E3S Web Conf.

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Drying and sortation are the most important steps to improve green coffee beans and cup quality. However, farmers very often neglect these steps. Therefore, a simple technique and soft approach are required to encourage farmers to implement drying and sortation technology. The study aim is to assess suitable drying and sortation technology to improve green coffee beans and cup quality to local culture in Jayawijaya Regency, Papua. The study was conducted using 2 factors; a. Combination of drying floor using a tarp and without sortation (DFWTS), b. Combination of drying tables and with sortation (DTWS). Drying tables were designed as two separate parts. The first part was the permanent tables, and the second part was removable boxes in dimension 80 x 80 cm located on top of the permanent tables. Descriptive analysis was conducted based on SNI 01-2907-2008 by the Indonesian Coffee and Cocoa Research Institute. The results show DTWS produce green coffee beans in compliance with SNI 01-2907-2008 at 4a grade, compared to DFWTS is rejected. Green coffee beans quality is likely to affect cup quality. DTWS obtain cup quality score 83.0 compare to DFWTS is 81.25. In conclusion, DTWS improve green coffee beans and cup quality.

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“…It has previously been observed that solar dryers using a box or table are suitable for drying coffee beans. Drying rate depends on solar radiation intensity and wind velocity [10].…”

Section: Methodsmentioning

confidence: 99%

Drying and sortation to improve green beans and cup quality of Wamena coffee

Adnan¹,

Lestari²

2021

E3S Web Conf.

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“…Beberapa penelitian terdahulu telah dilakukan dalam menganalisa proses pengeringan, diantaranya [7], [8] melakukan simulasi variasi sudut kolektor alat pengering kopi dan diperoleh sudut kolektor 30 derajat dapat menyimpan panas lebih baik. Kolektor surya dengan plat yang di perpanjang dapat digunakan untuk menyimpan radiasi matahari lebih besar [9]. Juga melakukan pengeringan menggunakan desikan agar terjadi pengeringan selama 24 jam[10], [11].…”

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Simulasi CFD Distribusi Temperatur pada Pengering Biji Kopi dengan Sistem Konveksi Paksa

Pasaribu,

Lumbangaol,

Napitupulu

et al. 2023

SJoME

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Drying is a mass transfer and heat transfer process that is strongly influenced by temperature and air velocity. The importance of analyzing the temperature distribution and air velocity is expected to be used as a reference to optimize the drying process to be faster and better. This study aims to analyze the temperature distribution and air velocity that occurs in a coffee bean dryer with a forced convection system using CFD simulation. CFD simulations are carried out using ANSYS Fluent software. with steady conditions, and using a pressure-based solver method. The obtained temperature distribution occurs with an estimated absorber temperature difference with the drying chamber is 31% during the day.

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