Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer

Understanding the drying kinetics within a food dryer is an important step towards its improvement. This study investigates the drying kinetics of potato slices in a recently proposed waste-heat based convective dryer. Statistical analyses are conducted for ten dissimilar mathematical models to choo...

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Autores principales:	Mahadi Hasan Masud, Hasibul Hasan Himel, Amit M.E. Arefin, Anan Ashrabi Ananno, Moshiur Rashid, Peter Dabnichki
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Mathematical modelling Waste heat convective dryer Activation energy Moisture diffusivity Exergo-environmental analysis Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ab1d7b1852c543e4ac29a2a042ac8f00
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spelling	oai:doaj.org-article:ab1d7b1852c543e4ac29a2a042ac8f002021-11-24T04:35:18ZMathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer2667-010010.1016/j.envc.2021.100372https://doaj.org/article/ab1d7b1852c543e4ac29a2a042ac8f002021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667010021003462https://doaj.org/toc/2667-0100Understanding the drying kinetics within a food dryer is an important step towards its improvement. This study investigates the drying kinetics of potato slices in a recently proposed waste-heat based convective dryer. Statistical analyses are conducted for ten dissimilar mathematical models to choose the best fit model for the experimental data at various drying temperatures (70 °C, 60 °C, and 50 °C). Results show that the Midilli et al. model is the best fit model to describe the drying kinetics of potato in the proposed dryer as it offers root mean square error (RMSE) of 0.0022, a coefficient of determination (R2) of 0.99, reduced chi-square (χ2) of 9.2 ×10−7. Results also demonstrate that the activation energy is 47.19 kJ⁄mol and the effective moisture diffusivity of dried potato sample is 4.22 ×10−10 to 11.67 × 10−10 m2/s at a drying air temperature of 50–70 °C. Moreover, if the proposed waste-heat based convective dryer is used instead of an electric convective dryer at 60 °C, it can reduce the external energy requirement by 29.98 MJ/kg. Exergo-environmental analysis of the proposed dryer shows that the CO2 emission and CO2 mitigation values for 20-year life cycle periods are 184.46 kg/year and 17.24 tons, respectively. Therefore, successful industrial application of the proposed drying system might be a striding stone towards the advancement of energy-efficient sustainable food drying systems.Mahadi Hasan MasudHasibul Hasan HimelAmit M.E. ArefinAnan Ashrabi AnannoMoshiur RashidPeter DabnichkiElsevierarticleMathematical modellingWaste heat convective dryerActivation energyMoisture diffusivityExergo-environmental analysisEnvironmental sciencesGE1-350ENEnvironmental Challenges, Vol 5, Iss , Pp 100372- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mathematical modelling Waste heat convective dryer Activation energy Moisture diffusivity Exergo-environmental analysis Environmental sciences GE1-350
spellingShingle	Mathematical modelling Waste heat convective dryer Activation energy Moisture diffusivity Exergo-environmental analysis Environmental sciences GE1-350 Mahadi Hasan Masud Hasibul Hasan Himel Amit M.E. Arefin Anan Ashrabi Ananno Moshiur Rashid Peter Dabnichki Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
description	Understanding the drying kinetics within a food dryer is an important step towards its improvement. This study investigates the drying kinetics of potato slices in a recently proposed waste-heat based convective dryer. Statistical analyses are conducted for ten dissimilar mathematical models to choose the best fit model for the experimental data at various drying temperatures (70 °C, 60 °C, and 50 °C). Results show that the Midilli et al. model is the best fit model to describe the drying kinetics of potato in the proposed dryer as it offers root mean square error (RMSE) of 0.0022, a coefficient of determination (R2) of 0.99, reduced chi-square (χ2) of 9.2 ×10−7. Results also demonstrate that the activation energy is 47.19 kJ⁄mol and the effective moisture diffusivity of dried potato sample is 4.22 ×10−10 to 11.67 × 10−10 m2/s at a drying air temperature of 50–70 °C. Moreover, if the proposed waste-heat based convective dryer is used instead of an electric convective dryer at 60 °C, it can reduce the external energy requirement by 29.98 MJ/kg. Exergo-environmental analysis of the proposed dryer shows that the CO2 emission and CO2 mitigation values for 20-year life cycle periods are 184.46 kg/year and 17.24 tons, respectively. Therefore, successful industrial application of the proposed drying system might be a striding stone towards the advancement of energy-efficient sustainable food drying systems.
format	article
author	Mahadi Hasan Masud Hasibul Hasan Himel Amit M.E. Arefin Anan Ashrabi Ananno Moshiur Rashid Peter Dabnichki
author_facet	Mahadi Hasan Masud Hasibul Hasan Himel Amit M.E. Arefin Anan Ashrabi Ananno Moshiur Rashid Peter Dabnichki
author_sort	Mahadi Hasan Masud
title	Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
title_short	Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
title_full	Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
title_fullStr	Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
title_full_unstemmed	Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
title_sort	mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ab1d7b1852c543e4ac29a2a042ac8f00
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Mathematical modelling and exergo-environmental analysis of drying potato samples in a waste heat-based convective dryer

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