Microwave Thawing Examinations of a Frozen Material (Tuna) in a Microwave Oven

摘要

In this paper, temperature distribution of heated material (frozen tuna) in a microwave oven is calculated by the method which combines FDTD for electromagnetic field calculation with Heat Transport Equation (HTE) considering melting heat and the nonlinear and rapid change of complex relative permittivity and heat conductivity during defrosting. Meanwhile, temperature distribution is measured by heating experiment using a microwave oven of commercial model and thermography is compared with the calculated one. As a result, the calculated temperature distribution of heated material agrees well with the measured one, and the validity of the combined method considering melting heat and the change of complex relative permittivity and heat conductivity is confirmed.