Implementation of Optical Meanders in the Temperature Measurement of the Extermination of Basidiomycete Serpula Lacrymans Using Microwave Heating

In industrial technological processes associated with the heating of the processed material by microwave radiation, it is necessary to measure the temperatures of objects. Methods for measuring temperatures in the fields of technology using microwave heating systems are considered. The main possibilities, disadvantages and limitations of the used contact and non-contact (optical) measurement methods are determined. The requirements for temperature measurement systems under conditions of exposure to strong electromagnetic fields are listed. The possibilities of the spectral pyrometry method are especially noted.

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Comparison of Conventional and Microwave Heating for Evaluation of Microwave Effects

Australian Journal of Chemistry ◽

10.1071/ch16017 ◽

2016 ◽

Vol 69 (8) ◽

pp. 865 ◽

Cited By ~ 5

Author(s):

Péter Bana ◽

István Greiner

Keyword(s):

Temperature Measurement ◽

Microwave Heating ◽

Organic Synthesis ◽

Convenient Method ◽

Thermal Effects ◽

Fibre Optic ◽

Organic Transformations ◽

Microwave Assisted ◽

Microwave Reactor ◽

Microwave Effects

In microwave-assisted organic synthesis, the question of microwave effects is still debated. Proper examination of these hypothesized phenomena is encumbered by some specific features of microwave heating. We devise a convenient method to eliminate most of the irreproducibility observed in microwave-heated organic transformations by thermal conditioning of the microwave reactor cavity. To show the utility of this approach, we investigated a reaction of 2-chloropyridine, in which microwave conditions were shown to be beneficial by previous studies. Using our method to ensure proper reproducibility together with fibre optic temperature measurement, the observed differences were traced back to large hidden thermal differences, while non-thermal effects could not be detected in the comparison experiments.

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Temperature Measurement Methods in Microwave Heating Technologies

Measurement Techniques ◽

10.1007/s11018-021-01954-w ◽

2021 ◽

Author(s):

B. A. Lapshinov

Keyword(s):

Temperature Measurement ◽

Microwave Heating ◽

Measurement Methods

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Infrared thermometry measurement of temperature distribution in the microwave regeneration of diesel particulate filters

International Journal of Engine Research ◽

10.1243/146808705x7275 ◽

2005 ◽

Vol 6 (1) ◽

pp. 61-71

Author(s):

J Kong ◽

M Henrichsen ◽

A J Shih

Keyword(s):

Temperature Distribution ◽

Temperature Measurement ◽

Microwave Heating ◽

Microwave Power ◽

Catalyst Loading ◽

Diesel Particulate ◽

Infrared Thermometry ◽

Diesel Particulate Filters ◽

Particulate Filters ◽

Infrared Temperature Measurement

Infrared thermometry was applied to study the temperature distribution in microwave heating of diesel particulate filters. In situ non-contact temperature measurement tests were conducted using an integrated four-channel fibre-optic infrared temperature measurement and a microwave heating system. Silica light pipes, which are transparent to electromagnetic fields, were used to collect the infrared radiation from specified locations inside a filter during heating. The temporal and spatial temperature distributions in four microwave-heated diesel particulate filters with different soot and catalyst loading conditions were measured. Experimental results show the non-uniform heating inside filters. Catalyst coating, soot loading, and microwave power level all affect the heating rate and temperature distribution. Using 1 kW of microwave power, heating for 600 s can raise the temperature above 200°C in the soot-laden, catalysed filter.

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