big capacity almond nuts microwave roasting equipment
What is Microwave?
Microwave is the frequency of 300 MHZ ~ 300 GHZ electromagnetic wave, it is short radio waves in a limited frequency band, the wavelength between 1 mm ~ 1 m electromagnetic wave, it is generally referred to as the decimeter wave, centimeter wave and millimeter wave. Microwave frequency is higher than general radio frequency, often also referred to as "ultra high frequency electromagnetic wave. As a kind of electromagnetic wave of microwave also have wave-particle duality. Basic properties of microwave usually appears as transmission, reflection and absorption three characteristics. For glass, plastic and porcelain, microwave is almost through without being absorbed. For water and food, etc. will absorb microwave and heating by itself. For metal stuff, it will bounce back the microwave.
Microwave drying principle:
Microwave drying is a new type of drying method. When drying, microwave converted into heat energy that can be applied directly to medium, because the microwave has penetrating performance inside and outside the media, heating at the same time, do not need to heat conduction, so very fast heating, the water content below 30% of food, can shorten the drying speed hundreds of times. Regardless of any shape objects, because the object of dielectric heating at the same time, both inside and outside material of inside and outside temperature difference is small, uniform heating, the drying quality greatly improved.
Microwave heating principle:
Microwave heating is an object absorbing microwave energy which can be converted into heat energy, which is completely different from other conventional heating methods. It is through the heated body internal dipole molecule high frequency reciprocating motion, the internal friction heat and the heated material temperature, no heat conduction process, can make the material internal and external heating, heating up at the same time at the same time, heating speed and uniform, only traditional heating mode is one of the energy consumption of a few minutes or a few points to achieve heating.From the theoretical analysis, the amount of heat generated in the microwave field has a lot to do with the types of matter and their dielectric properties.
