ENVIRONMENT-CONTROLLED DRYING OF CUT-ROSELLE: ANALYSIS OF DRYING-PARAMETERS & VALIDATION OF MODIFIED-PAGE II

I.E. Saeed () and Zulkhairi Zainol Abidin
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I.E. Saeed: Dept of Mech. & Manufacturing Eng., Faculty of Eng. & Built Environ., National University of Malaysia, 43600 Bangi, S.D.E., Malaysia
Zulkhairi Zainol Abidin: Dept of Mech. & Manufacturing Eng., Faculty of Eng. & Built Environ., National University of Malaysia, 43600 Bangi, S.D.E., Malaysia

Acta Mechanica Malaysia (AMM), 2024, vol. 7, issue 2, 139-163

Abstract: This Part II, of the research on the controlled-environment drying of Cut-Roselle, aimed to inspect the effects of varying drying-conditions on the drying-rate and drying-constant, and to assess, evaluate, and verify the Modified-Page II model’s performance. The study is carried-out in a chamber with controlled humidity, airspeed, and temperature. Where, different relative-humidity and temperatures are applied. The analysis of thin-layer drying-models revealed that the Modified-Page II model provided the most accurate fit, out of the 12 models. The average values obtained for the drying-constant (k), the model-coefficients (n) and (L) are, respectively, 0.00343, 0.99219, and -0.87306. The precision of the developed model is validated through two approaches: comparing the predicted-moisture contents with the actual moisture-data and examining the residuals in relation to the predicted-moisture contents. The findings indicated that the Modified-Page II model successfully, characterized the drying-performance of the Cut-Roselle.

Keywords: Modified-PageII; model-validation; drying-constant; drying-rate; drying-parameters; Roselle (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnamm:v:7:y:2024:i:2:p:139-163

DOI: 10.26480/amm.02.2024.139.163

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