Absrtact: The effects of frequency (915-2450 MHz), moisture content (16-48%) and temperature (25-60 C) on dielectric constant and dielectric loss factor (E) of Jiangnan rice cake were measured and studied by network analyzer.
The microwave drying equipment was calculated and the effects of frequency, moisture content and temperature on it were analyzed. The relationship model between dielectric parameters of rice cake and main influencing factors was established under partial frequencies, and the accuracy and feasibility of predicting moisture content based on dielectric parameters were tested.
The results show that in the frequency range of 915-2450 MHz, the e’‘of rice cake decreases with the increase of frequency, the e’’ increases with the increase of frequency, the e’'and e’’ both increase with the increase of water content, but decrease with the increase of temperature, and the energy penetration depth decreases with the increase of water content and frequency, and increases with the increase of temperature.
没有评论:
发表评论