Microwave Systems: Single Mode Vs. Multi-Mode

You might be interested in learning more about single-mode versus multi-mode microwave systems if you're investigating the possibilities of microwaves for your application. Both types of industrial microwave processing systems are available from Microwave Techniques under the two system brands Ferrite and IMS. Industrial Microwave Systems (IMS) units are primarily single mode processors, whereas Ferrite Microwave Technologies (FMT) systems are primarily multi-mode units. We'll break everything down here.

This section will examine the benefits, drawbacks, uses, scenarios, and ideal materials for single- and multi-mode microwave systems. Let's start by examining the relative benefits of each kind.

Benefits Of Single Vs. Multi-Mode

Compared to home systems, industrial microwaves demand a lot more electricity. As a result, they practically never use a portable microwave generator. The processing equipment may get electricity and energy from several generators in certain situations. Either way, a single-mode or multi-mode cavity receives the microwave energy supplied from the generator(s). The energy is transmitted identically by both types, but what transpires inside the applicator is different.

Benefits Of Several Modes

The microwave energy in multi-mode cavities reverberates within the applicator. As a result, the substance that goes through is heated by the microwaves, which apply energy in all directions. The whole range of systems from Ferrite Microwave Technologies makes use of cutting-edge processing techniques to improve the energy distribution and multi-mode heating uniformity.

The patented slotted polar cap (SPC) feed mechanism is one instance of this. Using a circular waveguide, the method produces a single mode polarised signal. It generates various modes within a microwave cavity when linked to it.

The polarised signal's rotational nature plays a major role in this process. In general, bulkier items and materials work best with multi-mode microwave systems. Users benefit from better product heating and higher microwave processing system efficiency when these type applicators use cutting-edge FMT microwave technology, which increases coupling and field distribution.

Benefits Of a Single Mode

Single mode applicators could be more beneficial for thinner materials and liquids than a multi-mode type system that fits all applications. Furthermore, single mode units with modular designs can simplify the process of retrofitting, or adding equipment to already-existing infrastructure.

Similarly, single mode systems are advantageous when it comes to pre- or post-heating materials before they enter or exit a traditional heater or dryer. Single mode systems frequently perform well with thinner or liquidous materials, even if multi-mode machines may offer better consistency for thicker products.

The geometry of the applicators concentrates the energy to a particular mode in IMS single mode processors. A plane of energy serpentines from side to side, slightly above the conveyor, for numerous passes in the case of the ridged serpentine waveguide applicator (for thin materials). This method is unique in that it also permits side-to-side consistency.

The energy is concentrated on an axis that runs through the middle of the material in the cylindrical applicator (for liquidous materials).

A Shared Benefit

Comparing single-mode and multi-mode systems to traditional industrial drying or heating technologies reveals the following common benefits:

1. Capacity to accelerate production rates

2. Making it possible for production costs to drop

3.Much simpler to maintain, examine, and identify

4. Safety initiative improvements: fewer product handling steps

5. Zero emissions: enhances productivity and reduces carbon footprint

6. Compact design as compared to big drying chambers or conventional gas-fired ovens

7. Less complicated to start, halt, and regulate—no need for protracted warm-ups and cool-downs

8. Improvements in product quality: a non-contact process that leaves things less stressed or marred

9. Uniformity: Depending on the product, each type of system provides exact and customised heating or drying.

Disadvantages Of Single Mode Vs. Multi-Mode

While there can be clear benefits to both kinds of processing systems, there might also be particular drawbacks or difficulties with each. This is mostly dependent on your facility, the material and its density, dielectric characteristics, and throughput, among other things. Let's examine the drawbacks of industrial microwave systems that operate in single or multimode modes.

Drawbacks With a Single Mode

The inability to produce a consistent energy distribution for denser, thicker materials is usually the main drawback of single mode devices. This could result in areas of the target material being wet. Additionally, it can leave some areas of the content underexposed. These locations are referred to as "cold spots" (or, alternatively, "hot spots") in the microwave business. The potential lack of penetration depth on thick materials is another potential drawback of using single mode units. Nevertheless, single mode systems seldom show these drawbacks when handling thin materials.

Misconceptions With Multi-Mode

For thin materials, multi-mode systems have a major drawback. While multi-mode systems can offer greater heating uniformity and energy distribution for thicker materials, their limited size and modularization flexibility is one of its other drawbacks. Single mode systems could offer a more customizable design with a range of applicator techniques. Multi-mode systems might also make it difficult to integrate the system with other current drying or heating infrastructure. But all of this is dependent upon the facility and the application.

Additionally, we have experience working on unique projects that call for reconfiguring or optimising infrastructure(s) to include microwave components and cutting-edge system-level technologies.

Procedural Utilisation

The 1960s saw the discovery and widespread use of the in-home microwave, which sped up technological advancements on a far bigger scale. Systems for industrial microwave processing have become standard in food processing establishments and other industrial sectors. Being forerunners in the industrial microwave sector, we have direct experience with the plethora of uses for single and multi-mode systems.

Multi-Action

1.Flavouring

2. Increase heat

3. Material drier

4.Food tempering from frozen

5. Material bonding or heating

Only One Mode

1. Disinfection

2. Fermentation

3. Extraction helped by a microwave

4. Desiccating grainy or loose materials

5. Drying of sheet or continuous goods

Industrial microwave systems have several applications in both food and non-food fields. Each of these process applications uses the energy, power, and other characteristics of microwaves to heat and dry a variety of materials.

Among many other processes, examples include the processing of timber, the drying of coal, and the treatment of biowaste.

At our cutting-edge microwave laboratory, we regularly conduct experiments on new products, materials, and substances as pioneers in the microwave sector. Every day, new goods and applications are put to the test and validated.