Radiation temperature measurement method for semitransparent materials using one-channel infrared pyrometer

Fu, Tairan; Liu, Jiangfan; Zong, Anzhou

doi:10.1364/ao.53.006830

Cited by 18 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Calibration was required because the polymer is semi-transparent and has varying emissivity. [17][18][19] Also, a model was developed by 6 to describe the bubble formation by applying variational principles. The basis of this model is that the bubble shape shall satisfy the minimum energy requirements.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigations on a high-density polyethylene (HDPE) blown film cooling with a new design of the counter-flow/radial jet air-ring

Ismail

Awad

Hamed

et al. 2021

Journal of Plastic Film & Sheeting

View full text Add to dashboard Cite

This study experimentally and numerically investigates a typical HDPE blown film production process cooled via a single-lip air-ring. The processing observations are considered for the proposed subsequent modifications on the air-ring design and the location relative to the die to generate a radial jet, directly impinging on the bubble. Measurements are performed to collect the actual operating parameters to set up the numerical simulations. The radiation heat transfer and the polymer phase change are considered in the numerical simulations. The velocity profile at the air-ring upper-lip is measured via a five-hole Pitot tube to compare with the numerical results. The comparison between the measurements and the numerical results showed that the simulations with the STD [Formula: see text] turbulence model are more accurate with a minimum relative absolute error (RAE) of 1.6%. The numerical results indicate that the peak Heat Transfer Coefficient (HTC) at the impingement point for the modified design with radial jet and longer upper-lip is 29.1% higher than the original design at the same conditions. Besides, increasing the air-ring upper-lip height increased the averaged HTC, which is 13.4% higher than the original design.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigations on a high-density polyethylene (HDPE) blown film cooling with a new design of the counter-flow/radial jet air-ring

Ismail

Awad

Hamed

et al. 2021

Journal of Plastic Film & Sheeting

View full text Add to dashboard Cite

show abstract

“…Introduction: It is difficult to measure accurately transient high temperature although some measurement methods have been developed in recent years. At present, the infrared radiation temperature measurement is a representative non-contact measuring method [1]. Due to the accurate emissivity of most heating material are difficult to obtain in producing transient high temperature, the measurement results are often unreliable.…”

mentioning

confidence: 99%

PCB‐integrated thin film thermocouples for transient temperature measurement

Wang

Zhang

et al. 2016

Electron. lett.

View full text Add to dashboard Cite

A thin film thermocouple (TFTC) on printed circuit board (PCB) substrate is investigated for measuring transient high temperature. The thermal conductivity of PCB is smaller than that of ceramic, which indicates less influence of substrate on heat conduction of TFTC. Therefore, PCB is suitable to make fast response sensors although it cannot withstand continuous high temperature as ceramic. On the other hand, the TFTC is fabricated on the PCB with measurement circuit together, which integrates a miniature measurement unit. A k-type TFTC was fabricated by magnetron sputtering while the film naturally connected with tracks of PCB, which achieves an integration of the sensor with measurement circuit. Experimental result indicates that the response time of TFTC is less than 2 ms.Introduction: It is difficult to measure accurately transient high temperature although some measurement methods have been developed in recent years. At present, the infrared radiation temperature measurement is a representative non-contact measuring method [1]. Due to the accurate emissivity of most heating material are difficult to obtain in producing transient high temperature, the measurement results are often unreliable. Thermocouples as high temperature sensors were widely used in contact temperature measurement [2]. The response of conventional thermocouples is slow, which results in lager error in the transient temperature measurement. Thin film thermocouple (TFTC) is fast response sensor, and the fastest response time reaches tens of nanoseconds [3][4][5][6]. However, most TFTCs were used to measure the surface temperature by fabricating sensors on surface of the measurement object, such as temperature measurement of machining cutter. When TFTC is fabricated on a substrate for measuring external transient temperature, the response time of the sensor increases dramatically due to the thermal conduction of substrate. Some semiconductor materials or insulated films, such as SiC, SiO 2 and Si 3 N 4 , were employed as a substrate of TFTCs in compatible semiconductor process [7][8][9]. In this Letter, the printed circuit board (PCB) is used as the substrate of TFTC for achieving integration of the sensor with measurement circuit. In addition, the TFTC based on PCB is characterised by the response time of 2 ms, which is feasible for transient temperature measurement.

show abstract

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

Song

et al. 2021

Infrared Physics & Technology

View full text Add to dashboard Cite

Radiation temperature measurement method for semitransparent materials using one-channel infrared pyrometer

Cited by 18 publications

References 33 publications

Experimental and numerical investigations on a high-density polyethylene (HDPE) blown film cooling with a new design of the counter-flow/radial jet air-ring

Experimental and numerical investigations on a high-density polyethylene (HDPE) blown film cooling with a new design of the counter-flow/radial jet air-ring

PCB‐integrated thin film thermocouples for transient temperature measurement

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

Contact Info

Product

Resources

About