Ushering in a technological revolution in Microwave Heating Systems and Microwave Drying Systems. The Hitek" dielectric microwave heating systems represent the latest in contemporary heating systems, developed in technical collaboration with SAMEER ( Society for Applied Microwave Electronic Engineering & Research ), an offshoot of TIFR.

The microwave heating systems would revolutionise the drying systems prevalent in a vast array of industries like carpet, foam, latex, plastics, rubber vinyl, ceramics, food products, paper, rayon, textiles, wood products, chemicals, glass fiber, pharmaceuticals, resins, upholstery, yarns etc.

Background
The transition of time has brought out the shortcomings of conventional technology in tackling certain specific problem areas. The conventional drying systems have the inherent disadvantage of not being able to effectively remove the final traces of moisture. Removal of the final traces of moisture becomes critical to the quality levels of certain items in the chemical, pharmaceutical, agro, rubber and many other industries.

How to reduce energy cost? How to ensure uniform drying of products with larger thickness? How to regulate the time span for heat exposure by the mechanism of instant start - stop? How to increase the pace of production with minimum interruption in the drying process and still ensure selective heating of product ingredients?

To resolve these issues, it was imperative that the basic heating technology needed to be reviewed. Our Industrial Microwave Dryer offers the ultimate solution to problems in drying, curing, bonding and many other operations.

The Product
A typical industrial microwave dryer consists of a high Power Microwave Source with built-in control circuits, and one or more applicators properly integrated with the fluid bed dryer, as one composite unit - to engender optimal drying efficiency. The applicator is the unit where the interaction of the microwave energy with the material to be processed takes place. Customised for every industrial process, the power source comprises a high power magnetron and a circulator.

Technology
The high frequency dielectric heating is based on the principle of conversion of electrical energy to heat energy. With microwaves, no heat is applied per se. Instead, a form of radio waves pass through the material. On directing the controlled high frequency waves, instant heat is generated by molecular friction, this heat is optimally utilised for achieving significant results in drying, heating, curing, vulcanizing, thawing sterilising, tempering, evaporating and bonding applications. The systematic control mechanism, specially designed and developed, ensures precise direction and conversion of electric energy into heat energy. For a substance to be microwaveable, it must process an asymmetric molecular structure, as in the case of a water molecule. The molecules of such substance from electric dipoles which, when exposed to an electric field, assume an orientation relative to the direction of the field. It is this orientation polarisation that is responsible for energy generation.

Advantages

• Speed of heating, better efficiency, saving in space and manpower.
• Ease of operation, instantaneous ON and OFF operations.
• Ease of adaptation to existing on line operations, possible combinations with other thermal process.
• No energy loss radiation, improved efficiency and working conditions, possibility of eliminating the need for temperature control of the equipment.
• Better thermal efficiency compared with traditional process.
• Improved product quality.

The Suitability
The industrial microwave dryer is ideal for precise drying of moisture in a variety of industries (Processed food/Tea/Spices/Natural products like rubber, plastics, chemicals, pharmaceuticals etc). When coupled with a conventional dryer that does the initial drying, the microwave dryer gives a rapid method for removing the residential moisture trapped inside the materiel and it is very cost effective. In many applications, it also enhances the value of the product by preserving the aroma, flavor etc. Studies have revealed overwhelming evidence proving beyond doubt the superiority of specialized microwave drying over conventional drying. Also this drying is ideal for seeds sensitive to insects. The microwave dryer assures removal of moisture from 6-8% to 3% or lower, as desired.

The Pilot Units
A composite pilot unit encompassing Industrial microwave dryer is available at our facility provides an optimal setting to promptly test the suitability and effectiveness of our specialized equipment for your range of products related to drying.