What about economics of Talin microwave drying and sterilizing machine

A common misconception is that microwave heating is always more expensive than heating by conventional techniques.  The actual answer depends on the application and local utility costs.  In some cases, microwaves can be more efficient than conventional systems, resulting in major savings in energy consumption and cost.

When used as a Pre-Dryer in combination with conventional gas or oil heated air dryers, Talin microwave systems allow overall production capacities to be increased by 25 to 33%.  This is because the pre-dryer:
Preheats moisture to the evaporative temperature.
Can help to equalize the moisture level of product before the conventional dryer.
With current energy costs, the return on capital invested in an Talin pre-dryer has been as low as 12 to 24 months.

When used as a Post-Dryer in combination with conventional gas or oil-heated dryers, Talin microwave systems are more efficient than conventional dryers at achieving final moisture levels of less than 20%.  This is because the lower the moisture level, the more difficult it is to drive moisture from the center of material to the surface by conventional heat conduction and convection processes.  An Talin post-dryer provides:
Uniformity of moisture control and surface temperature of the final product.
Higher production efficiency due to increased process speeds.
Improved product quality resulting from reduced surface temperatures, compared with conventional post-dryer designs.
Return on capital invested in an Talin post-dryer has been as low as from 12 to 24 months.

In addition to the applications above, Talin planar units are used as Stand-Alone Dryers.  These may be the most economical solution where minimal equipment floor space or footprint is available for a new application, or when expansion of existing production facilities would require building modifications to accommodate a conventional drying system.

In the case of Heating a pumpable fluid using an Talin Cylindrical Heating System, the production cost of providing sensible heat transfer from microwave energy is totally dependent on the local cost of utilities than can vary by a factor of five throughout North America.  As a rough guide, this cost is expected to be approximately one third higher than using steam in a conventional heat exchanger.  However, this is offset by several factors, including:
The reduced capital investment in steam boilers, steam trains, condensate collection and water treatment plant.
The ability to use high power densities enables microwave heaters to substantially increase production rates.
Uniform energy distribution minimizes fouling depositions in even the most viscous products.  This is particularly important with thermally sensitive materials such as chemical polymers, food ingredients, nutraceuticals, biotech products & pharmaceuticals.
For multiphase food products, hold times are greatly reduced using Talin high temperature heaters, as the equilibration of hot and cold spots is virtually instantaneous. This is because the difference in their temperatures is minimal, unlike conventional heaters. Smaller hold tubes also reduce capital investment and operating costs for system pumps.
With volumetric heating of multiphase products, solids loadings of 70% or higher can be processed since the carrier fluid is not used as the primary heat delivery medium.
The shorter residence times achievable with microwave heating improve product quality. Compared to conventional heating, Talin heated food products tend to retain a higher percentage of flavors and nutrients.
Before designing any commercial microwave heating or drying system, Talin recommends working with its customer to prepare a customized Economic Value Analysis based on the actual process specifications required.  Contact us for further details: talinchina@talinchina.com


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