Jurnal Teknik Mesin
Vol 1, No 1 (2011)

A SOLAR ASSITED DRYING SYSTEM FOR GREEN TEA

Yahya, M (Institut Teknologi Padang)



Article Info

Publish Date
02 Jul 2013

Abstract

Indonesia being situated near the equator receives abundant solar radiation and having characterized by an average daily solar radiation of about 600-700W/m2. This could be contributed as energy sources for drying green tea. This paper present the experimental studies conducted on the herbal tea or green tea using a solar assisted drying system. The drying system has an array of collector with the size 13.8 m2. The fresh tealeaves form the plantations are first soaked I warm water for five minutes. Next, Water from the tealeaves will be drained out and dried in the chamber. The collector is of the V-Groove type. The system has two fans to circulate air. A 10 kW auxiliary heater is also included and will be on if the temperature of the drying chamber is less than the specified preset temperature of 50oC. A drying chamber of 55oC can be reached at solar radiation levels of 600-700 Wm2 and ambient temperature of 27-34oC. The flow rate is fixed at 15.1 m3 /min. The initial moisture content is 87% (wet basis) and the final moisture content is 54% (wet basis). A total of 12 hours of drying time is required where solar energy contribute about 56% the total energy requirement.

Copyrights © 2011






Journal Info

Abbrev

tmesin

Publisher

Subject

Mechanical Engineering

Description

Jurnal Teknik Mesin (JTM) is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed by at least two ...