Title
Reducing drying energy consumption by adsorbent property optimization in multistage systems
Author
Atuonwu, J.C.
van Straten, G.
van Deventer, H.C.
van Boxtel, A.J.B.
Publication year
2012
Abstract
This work presents a mixed integer nonlinear programming method for the design of energy efficient multistage adsorption dryers within product temperature and moisture constraints. The aim is to find the adsorbent type and properties that minimize specific energy consumption. The results show that the adsorbents chosen in each stage have highest sorption capacities for corresponding drying air conditions. Heat requirements are matched so, zero utility energy is spent regenerating the second stage adsorbent. The adsorbent flow speeds are such that the first stage is optimized for dehumidification and the second for heat recovery. Overall, the optimal system reduces specific energy consumption by about 64% compared to a conventional system at the same drying temperature. Also, drying capacity is improved which permits the use of smaller dryers. © 2012 Elsevier B.V.
Subject
Life
FI - Functional Ingredients
EELS - Earth, Environmental and Life Sciences
Food and Nutrition
Biology
Healthy Living
Energy
Mixed integer nonlinear programing
Multistage adsorption drying
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http://resolver.tudelft.nl/uuid:390eb520-f1fb-47d7-beee-bedbf9b9823e
DOI
https://doi.org/10.1016/b978-0-444-59506-5.50100-0
TNO identifier
462857
ISSN
1570-7946
Source
Computer Aided Chemical Engineering, 31, 1346-1350
Document type
article