A Cihan University-Erbil Lecturer Published a Research Article with MDPI
Lecturer Esmail Ibrahim Khalife from the Department of Civil Engineering at Cihan University-Erbil published a research article entitled “Multi-Response Design Optimisation of a Combined Fluidised Bed-Infrared Dryer for Terebinth (Pistacia atlantica L.) Fruit Drying Process Based on Energy and Exergy Assessments by Applying RSM-CCD Modelling ” in the Sustainability.
About the author:
Name: Esmail Ibrahim Khalife
Qualification: Ph.D.
Academic rank: Lecturer
Affiliation: Department Civil Engineering, Cihan University-Erbil
TAP: https://sites.google.com/cihanuniversity.edu.iq/esmail-khalife/home
Google Scholar Account: https://scholar.google.com/citations?user=uqP2yMQAAAAJ&hl=en
ORCID account: https://orcid.org/0000-0002-1690-1714
Publons account: https://www.webofscience.com/wos/author/record/542060
Journal Coverage:
https://www.mdpi.com/journal/sustainability
Title: Sustainability
Science Citation Index: https://mjl.clarivate.com:/search-results?issn=2071-1050&hide_exact_match_fl=true&utm_source=mjl&utm_medium=share-by-link&utm_campaign=search-results-share-this-journal
Science Citation Index Expanded
Clarivate Analytics (Wos: IF = 5.8)
SCOPUS: Q1
Publisher: MDPI
Country: United Kingdom
About the Paper:
Title: Multi-Response Design Optimisation of a Combined Fluidised Bed-Infrared Dryer for Terebinth (Pistacia atlantica L.) Fruit Drying Process Based on Energy and Exergy Assessments by Applying RSM-CCD Modelling
DOI: https://doi.org/10.3390/su142215220
Abstract:
The present investigation aimed to perform an optimisation process of the thermodynamic characteristics for terebinth fruit drying under different drying conditions in a fluidised bed-infrared (FBI) dryer using response surface methodology (RSM) based on a central composite design (CCD) approach. The experiments were conducted at three levels of drying air temperature (40, 55, and 70 °C), three levels of drying air velocity (0.93, 1.765, and 2.60 m/s), and three levels of infrared power (500, 1000, and 1500 W). Energy and exergy assessments of the thermodynamic parameters were performed based on the afirst and second laws of thermodynamics. Minimum energy utilisation, energy utilisation ratio, and exergy loss rate, and maximum exergy efficiency, improvement potential rate, and sustainability index were selected as the criteria in the optimisation process. The considered surfaces were evaluated at 20 experimental points. The experimental results were evaluated using a second-order polynomial model where an ANOVA test was applied to identify model ability and optimal operating drying conditions. The results of the ANOVA test showed that all of the operating variables had a highly significant effect on the corresponding responses. At the optimal drying conditions of 40 °C drying air temperature, 2.60 m/s air velocity, 633.54 W infrared power, and desirability of 0.670, the optimised values of energy utilisation, energy utilisation ratio, exergy efficiency, exergy loss rate, improvement potential rate, and sustainability index were 0.036 kJ/s, 0.029, 86.63%, 0.029 kJ/s, 1.79 kJ/s, and 7.36, respectively. The models predicted for all of the responses had R2-values ranging between 0.9254 and 0.9928, which showed that they had good ability to predict these responses. Therefore, the results of this research showed that RSM modelling had acceptable success in optimising thermodynamic performance in addition to achieving the best experimental conditions.
