Indirect dryers

Book chapter abstract

Authors/Editors

SAKAMON DEVAHASTIN

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Publication Details

Author list: Devahastin S., Mujumdar A.S.

Publisher: Hindawi

Publication year: 2014

Start page: 127

End page: 138

Number of pages: 12

ISBN: 9781466596665; 9781466596658

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946498628&doi=10.1201%2fb17208&partnerID=40&md5=721a2440842666b03c0e3b22ba7e3551

Languages: English-Great Britain (EN-GB)

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Abstract

Generally, indirect dryers have higher energy efciency than the direct dryers, because the energy lost through the exhaust gas stream is greatly reduced; the heat load of the dryers is only from the material as it dries. Waste heat source can also be used to cut drying energy costs. The vapor produced from the drying material can also be used as a heating medium in a subsequent stage of drying, hence reducing the consumption of the primary heat transfer medium. If the vaporization rate is high, e.g., when drying pulp, a two-or three-stage dryer may be economic. ฉ 2015 by Taylor & Francis Group, LLC.

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