Heating of biomass in microwave household oven - A numerical study

Fia, A.Z.; Amorim, J.

Heating of biomass in microwave household oven - A numerical study

A.Z. Fia and J. Amorim

Energy, 2021, vol. 218, issue C

Abstract: To improve the efficiency of biomass heating by microwaves, this paper studied numerically the heating of wood, sugar cane bagasse, orange peel and palm oil in microwave domestic oven. The study focused in the evaluation of power absorption capability of the biomasses in cylindrical and sphere shapes. The Maxwell equations were employed to calculate the microwave electromagnetic field distribution in the microwave cavity and in the samples, coupled to heat equation. Quantitatively, the power absorption capability and temperature distribution uniformity were, respectively, described by power absorption efficiency (PAE) (0.07 < PAE < 0.87) and the coefficient of variation (COV), varying between 0.01 and 0.14. Two dimensional plots of temperature evolution as function of time was used to determine the locations of the resonating peaks as function of peak number. The rate of heating efficiency was evaluated using the degree of thermal runaway ΔT (1K<ΔT<102K) and evolution of average temperature T¯ (298KKeywords: Microwave simulation; Microwave oven; Biomass; Temperature; Electric fields (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:218:y:2021:i:c:s0360544220325792

DOI: 10.1016/j.energy.2020.119472

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