Page - IV - in Adaptive and Intelligent Temperature Control of Microwave Heating Systems with Multiple Sources

ListofSymbols QL Quality factorcorrespondingto theenergy losscausedbythe load unitless QW Quality factorcorrespondingto theenergy losscausedbythewall unitless QD Quality factorcorrespondingto theenergy losscausedby diffraction unitless τ Relaxationtimeof thedielectric material s γ Complexpropagationvector 1/m α Attenuationconstant (realpartof γ) 1/m β Phaseconstant (imaginarypartof γ) 1/m ε Complexpermittivityofmaterial F/m εs Approximationof thecomplex permittivityat lowfrequency range F/m ε∞ Approximationof thecomplex permittivityatveryhigh frequencyrange F/m ε′ Realpartof thecomplex permittivity F/m ε′′ Imaginarypartof thecomplex permittivity F/m ε0 Permittivityofvacuum F/m εr Relativepermittivityofmaterial F/m µ0 Permeabilityof freespace H/m µr Relativepermeabilityofmaterial H/m T Temperatureof the load K ρ Massdensity kg/m3 cp Specificheatcapacity J/(K ·kg) κ Thermalconductivity W/(m ·K) σe(T) Electrical conductivityat temperatureT A/(V ·m) iv