On surface temperature measurement of low emittance artefact coating by active infrared laser radiation thermometry

An, Bin; Qu, Yao; Song, Xiaoqian; Wei, Dong; Yuan, Z.; Zhao, Yunlong; Levick, A. P.

doi:10.1016/j.infrared.2021.103696

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…While the laser temperature measurement method performs well on surfaces with high emissivity, it may encounter difficulties when applied to surfaces with low emissivity. An et al [9] constructed a noncontact temperature measurement system based on the principle of infrared laser radiation temperature measurement shown in Figure 7. The experimental results revealed that, for surface temperatures between LEFT device overall structure schematic [8].…”

Section: Laser Temperature Sensormentioning

confidence: 99%

Current Status and State-of-Art Developments in Temperature Sensor Technology

Chen,

Zuo,

et al. 2023

Wireless Sensor Networks - Design, Applications and Challenges

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Temperature is one of the seven base units of the physical world, and the temperature sensors have wide applications in the lives, research, and industries. This chapter presents a brief introduction on four classic types of temperature sensors, including thermometers, thermocouples, resistance temperature detectors (RTD), and thermistors. These traditional temperature sensors have some limitations and are not suitable for dynamic measurements. To meet the demand for temperature measurement under various extreme and complex conditions, four advanced types of temperature sensors are introduced. The optical temperature sensors, including the infrared thermal imaging and laser temperature sensor, utilize the thermal radiation and are capable of measuring high-temperature objects without direct contact. The small and flexible fiber optic temperature sensors take advantage of the fact that the temperature plays a significant role in the optical transmission characteristics of the optical fiber, and it can be used in point, quasi-distributed, or distributed form. Acoustic temperature sensors measure the speed and frequency of the sound wave under different temperatures to obtain the temperature, and it is commonly used for health monitoring of complex structures. Furthermore, micro/nano temperature sensors are ideal for specific applications due to their small size, high sensitivity, and rapid response time.

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Section: Laser Temperature Sensormentioning

confidence: 99%

Current Status and State-of-Art Developments in Temperature Sensor Technology

Chen,

Zuo,

et al. 2023

Wireless Sensor Networks - Design, Applications and Challenges

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“…Research on active thermometry based on the dual-wavelength infrared laser was conducted by the Chinese National Institute of Metrology [11][12] . Focusing on the accurate measurement of the real temperature on the surface of high-temperature materials, the active temperature measurement method based on a dual-wavelength infrared laser was improved, and the active temperature measurement system was designed and built.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the effect of laser parameters on active laser infrared radiation thermometry

Wang

安²,

赵³

et al. 2023

AOPC 2022: Infrared Devices and Infrared Technology; And Terahertz Technology and Applications

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Accurate measurement of the true surface temperature of high-temperature materials is very important in many fields, such as modern industrial systems, solar heat utilization and metrology. At present, passive radiation thermometry is mainly used to measure the real surface temperature of high-temperature materials. This technology cannot get rid of the influence of emissivity on temperature measurement accuracy. The active laser infrared radiation thermometry is a new emissive-free temperature measurement technology. Based on the active thermometry of dual-wavelength infrared laser, with the condition of environmental reflection interference and unknown emissivity, the true surface temperature of high-temperature material is precisely measured and studied. Based on the theoretical model of active dual-wavelength infrared laser thermometry, an active laser thermometry system was built and upgraded in this study. The active temperature measurement experiments of changing laser power were carried out to analyze the influence of laser power on the accuracy of active temperature measurement. Then the active temperature measurement experiments were carried out by changing the laser modulation frequency to analyze the influence of the laser modulation frequency on the active temperature measurement accuracy. The results show that the reasonable selection of laser parameters(laser power and laser modulation frequency) is the key to carrying out precision temperature measurement based on active laser infrared radiation thermometry.

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“…Isı geçişinin belirlenmesi, özellikle yüzeye erişimin her zaman mümkün olamadığı yanma odaları, endüstriyel kazanlar, döküm uygulamaları, ayrıca binaların termal yönetimi, havacılık mühendisliği gibi farklı teknoloji ve mühendislik uygulamalarında büyük öneme sahiptir. Ayrıca malzeme yüzey sıcaklığının doğru ölçümü, özellikle yüksek sıcaklık uygulamalarında hayati bir rol oynamaktadır [9,11].…”

Section: Introductionunclassified

Experimental Investigation of Effect of the Distance Between Two Cylinders Placed Inline in the Flow Area on the Cylinder in the Downstream Region

Saydam

Özalp

Polat

et al. 2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzBu çalışmada, bir akış alanı içerisine sıralı şekilde yerleştirilen iki silindir (kontrol silindiri ve ısıtılan silindir) arasındaki mesafenin alt akış bölgesindeki ısıtılan silindir etrafındaki ısı transferine etkisi deneysel olarak incelenmiştir. Isıtılan silindir alüminyumdan imal edilmiş olup, içerisine elektrikli rezistans yerleştirilerek silindir yüzeyinin ısıtılması sağlanmıştır. Çalışmada öncelikle, silindir yüzeyinde sabit sıcaklık elde etmek ve ölçümleri gerçekleştirmek için bir sıcaklık ölçüm ve kontrol sistemi tasarlanmış ve test edilmiştir. İlk ölçümlerin değerlendirilebilmesi amacıyla tek silindir (ısıtılmış silindir) için farklı Reynolds (Re) sayılarında silindir etrafındaki değişimler incelenmiştir. Daha sonra Re=2700 için pasif akış kontrolü sağlamak amacı ile ısıtılan silindirin üst akış bölgesine farklı mesafelerde (L/D oranı) bir kontrol silindiri yerleştirilerek silindir çevresindeki ısı transferi incelenmiştir. Farklı Re sayılarında yapılan deneylerden, Nusselt (Nu) sayısının akışa bağlı olarak silindir çevresi boyunca değişim gösterdiği ayrıca Re sayısının artması ile silindir çevresindeki akış yapısındaki düzensizliklerden kaynaklı olarak silindir yüzeyindeki sıcaklıkların düştüğü ve dolayısıyla Nu sayısının arttığı görülmüştür. Silindirler arasındaki L/D oranının artması ile kontrol silindirinin etkisinin azaldığı görülmüş ve Re=2700 için ısı transferi açısından optimum oranın L/D=2.0 olduğu tespit edilmiştir.

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On surface temperature measurement of low emittance artefact coating by active infrared laser radiation thermometry

Cited by 6 publications

References 19 publications

Current Status and State-of-Art Developments in Temperature Sensor Technology

Current Status and State-of-Art Developments in Temperature Sensor Technology

Experimental study of the effect of laser parameters on active laser infrared radiation thermometry

Experimental Investigation of Effect of the Distance Between Two Cylinders Placed Inline in the Flow Area on the Cylinder in the Downstream Region

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