NEW PROJECTS

The following projects are under investigation or already in design:

1                    Very High Power Constant-Voltage dryer

2                    Vacuum dryer

3                    RF magnetic heater

4                    Plasma PET bottle sterilisator

1.  VERY HIGH POWER CONSTANT-VOLTAGE DRYER

Beside the production of the above mentioned systems, generators, tuners and applicators, High Frequency Design Andalucia has studied the possibilities of constructing a very large RF AIR dryer used to dry harvested goods like Cotton or Rice. This dryer uses electrical energy, but has the advantage that this energy is used for the evaporation of the water with an increased efficiency. This may balance the increased cost of the electrical energy versus the conventional heat generated by the burning of gas or oil or even decrease total cost. Also the environmental advantages and smell in the vicinity are an advantage. The generator can be designed for a power beyond 1 MegaWatt.  The generator does not need any load tuning and RF filtering. This decreases cost considerably and increases reliability. We could simplify the complete installation to a mere aluminium box with a tube by combining the applicator with the generator inside a waveguide. This technology is patented.

2. VACUUM DRYER

A vacuum dryer using a very simple gravity based mixer and RF or Microwave evaporation energy source is currently in design. The demonstration model that will be based in the laboratory of High Frequency Design Andalucia used for tests and demonstrations will have a capacity of approx.  150 litres. Design drivers for this dryer are:

low cost, low temperature drying, suitable for RF or Microwave energy, High Power to Volume ratio.

3.     RF MAGNETIC HEATER

At this moment a RF manually tuned magnetic heater is available for experiments of uniform heating of materials. This applicator already performed many experiments and tests. A new version of an automatically tuned applicator at 13.56 Mhz will be produced. Also this applicator will be available for tests and experiments in the laboratory of High Frequency Design Andalucia S.L.

The applicator can heat fluid materials that are slightly to strongly conducting (salted and acid liquids like sauces and many other liquids in the food and chemical industry). A conducting liquid can not be heated well with dielectric technologies.

Successful experiments have been conducted with our magnetic heaters for the synthesis of zeolite crystals on Earth and in Space. Also magnetic heaters have been constructed for thermal initialisation of chemical processes.

4.    PLASMA PET BOTTLE STERILIZATOR

Some experiments have been conducted to extend Air plasma inside a PET bottle for sterilisation. Using this technology, one generator delivering RF pulses of approx. 5 mSec. at a power level of 50 kWatt can be used to sterilise 5 bottles per second, without the use of steam or gasses, with a low energy consumption. In near future more design effort will be put in this technology in order to get a demonstration set-up in our laboratory.