Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems
Temperature measurement in microwave systems is essential for thermally driven processes, namely, catalytic reactions and ceramic sintering. Although, the application of direct thermometry methods, namely, thermocouples, have been commonly articulated in the available literature, however, contacted...
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| Format: | Article |
| Language: | English |
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University of Tehran
2018-12-01
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| Series: | Journal of Chemical and Petroleum Engineering |
| Subjects: | |
| Online Access: | https://jchpe.ut.ac.ir/article_68778.html |
| _version_ | 1819276597315764224 |
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| author | Sepehr Hamzehlouia Jamal Chaouki |
| author_facet | Sepehr Hamzehlouia Jamal Chaouki |
| author_sort | Sepehr Hamzehlouia |
| collection | DOAJ |
| description | Temperature measurement in microwave systems is essential for thermally driven processes, namely, catalytic reactions and ceramic sintering. Although, the application of direct thermometry methods, namely, thermocouples, have been commonly articulated in the available literature, however, contacted temperature measurement mechanisms have aroused concerns associated with the disruption of the electromagnetic field and local distortion of the field pattern leading to unprecedented measurement uncertainties. Consequently, the application of optical measurement methods has been advocated to diminish the associated concerns. However, due to the economical constrains and measurement range restrictions, the application of optical measurement systems, namely, pyrometers and optical fibers, has been deferred. In this study, an infrared thermopile, a precise and feasible temperature measurement system has been developed and calibrated to perform in microwave irradiation. Furthermore, the accuracy of the developed temperature system has been compared with the thermometry technique. It was concluded that thermopile stipulates unrivalled precision, succeeding a profound calibration procedure. It was further demonstrated that the thermopile is capable of the temperature measurement of the dielectric surfaces, exclusively, while the grounded thermocouple monitored the bulk temperature, a proportion of the gas phase and the solid phase temperature values. Consequently, the application of a thermopile coupled with a thermometry measurement method has been proposed to monitor the temperature of the dielectric catalyst active sites in gas-solid catalytic microwave-heated reactions. |
| first_indexed | 2024-12-23T23:42:45Z |
| format | Article |
| id | doaj.art-258f33456a604df69f529837d2ee3b66 |
| institution | Directory Open Access Journal |
| issn | 2423-673X 2423-6721 |
| language | English |
| last_indexed | 2024-12-23T23:42:45Z |
| publishDate | 2018-12-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | Journal of Chemical and Petroleum Engineering |
| spelling | doaj.art-258f33456a604df69f529837d2ee3b662022-12-21T17:25:36ZengUniversity of TehranJournal of Chemical and Petroleum Engineering2423-673X2423-67212018-12-0152220121010.22059/JCHPE.2018.270160.1257Infrared Thermopile Temperature Measurement Technique in Microwave Heating SystemsSepehr Hamzehlouia0Jamal Chaouki1Process Engineering Advanced Research Lab (PEARL), Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, Canada|Process Design and Simulation Research Center, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, IranProcess Engineering Advanced Research Lab (PEARL), Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, CanadaTemperature measurement in microwave systems is essential for thermally driven processes, namely, catalytic reactions and ceramic sintering. Although, the application of direct thermometry methods, namely, thermocouples, have been commonly articulated in the available literature, however, contacted temperature measurement mechanisms have aroused concerns associated with the disruption of the electromagnetic field and local distortion of the field pattern leading to unprecedented measurement uncertainties. Consequently, the application of optical measurement methods has been advocated to diminish the associated concerns. However, due to the economical constrains and measurement range restrictions, the application of optical measurement systems, namely, pyrometers and optical fibers, has been deferred. In this study, an infrared thermopile, a precise and feasible temperature measurement system has been developed and calibrated to perform in microwave irradiation. Furthermore, the accuracy of the developed temperature system has been compared with the thermometry technique. It was concluded that thermopile stipulates unrivalled precision, succeeding a profound calibration procedure. It was further demonstrated that the thermopile is capable of the temperature measurement of the dielectric surfaces, exclusively, while the grounded thermocouple monitored the bulk temperature, a proportion of the gas phase and the solid phase temperature values. Consequently, the application of a thermopile coupled with a thermometry measurement method has been proposed to monitor the temperature of the dielectric catalyst active sites in gas-solid catalytic microwave-heated reactions.https://jchpe.ut.ac.ir/article_68778.htmlMicrowave HeatingTemperature MeasurementThermometryOptical MeasurementThermopile |
| spellingShingle | Sepehr Hamzehlouia Jamal Chaouki Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems Journal of Chemical and Petroleum Engineering Microwave Heating Temperature Measurement Thermometry Optical Measurement Thermopile |
| title | Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems |
| title_full | Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems |
| title_fullStr | Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems |
| title_full_unstemmed | Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems |
| title_short | Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems |
| title_sort | infrared thermopile temperature measurement technique in microwave heating systems |
| topic | Microwave Heating Temperature Measurement Thermometry Optical Measurement Thermopile |
| url | https://jchpe.ut.ac.ir/article_68778.html |
| work_keys_str_mv | AT sepehrhamzehlouia infraredthermopiletemperaturemeasurementtechniqueinmicrowaveheatingsystems AT jamalchaouki infraredthermopiletemperaturemeasurementtechniqueinmicrowaveheatingsystems |