In recent years, the microwave heating technology has been entering almost all households, industry sectors, and scientific applications. Despite its permanent progress, the conventional impossibility of generating uniform heat release within the processed material still remains a key problem for many practical applications.
The microwave heating is known to be a very complicated process depending on various physical parameters. They may be the geometry of the heating chamber, the structure of the processed material (heterogeneous or homogeneous), the orientation and the shape of the material, its surface (smooth or non-smooth), its dielectric properties, temperature dependant microwave permittivity, the actual distribution of the microwave energy, etc.
The problem for control of microwave heating becomes hard to formalize in such a general setting. Therefore there are number of different attempts for narrowing it. They vary from an expensive and complicated computer modeling software to an empirical application of mechanical devices such as stirrers and turntables. Whatever the approach is, it needs real experimental validation of the predicted/anticipated microwave energy pattern, which is necessary for obtaining the desired uniform heat release within the irradiated material. This validation represents a proof of the actual distribution of the microwave energy in the processing (resonant) cavity for the specific application.
Our company offers precisely that - simple visual proof of microwave energy patterns.
We developed a method for mapping density distribution of microwave power irradiation by means of visualization the fields with electromagnetic intensity using microwave active composition
It may be coated on a object with a random shape.
Depending on the type of colorant used in the composition, it will lose or gain its color at certain spots under microwave irradiation. These spots will appear on the coated object, showing exactly where the surface has been hit by microwaves. Response time is short and the spots are well-outlined.
The process transpires in mild conditions, without any special requirements.
No organic solvents are used and the components of the composition are not toxic or dangerous to human health.
Testing would be done in any cavity used for microwave thermal processing.
The method could be of great assistance to scientists and engineers researching microwave assisted processes or designing microwave power equipment.
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(patent pending).