Lining Pei

Jiangsu Institute of Metrology

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Xin Jia

Institute of Soil Science

Xia Zhao

Jiangsu Institute of Metrology

Jian Wu

Zhejiang University

Meng Qu

Changchun University of Technology

Yuanyuan Wang

Hohai University

Qufei Shi

Jiangsu Institute of Metrology

Zheng Zhang

Harbin Institute of Technology

Zhao Xia

Hebei University of Economics and Business

Cooperative Institutions

Jiangsu Institute of Metrology

Ministry of Agriculture and Rural Affairs

Institute of Soil Science

Chinese Academy of Sciences

Northeast Agricultural University

Southwest University of Science and Technology

Nanjing University of Science and Technology

Nanjing Tech University

Shandong University of Science and Technology

Ocean University of China

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Study of the Test Methods of Emission Rates in Different Ambient Temperature Fields

Journal of Physics Conference Series (2022)

Xia Zhao Xin Jia Lining Pei Qufei Shi Jian Wu

Abstract With the wide application and rapid development of infrared temperature measurement, which has attracted wide spread interest in the field of non-contact temperature measurement due to its unique advantages. Measurement of the real temperature of the measured object is an important task in many disciplines, especially critical and difficult for the non-contact measurement. However, the accuracy of the infrared thermography technique is difficult to reach a satisfactory level, and cannot meet the requirements of high accuracy, due to the emissivity cannot be determined in outdoor environments. It is very meaningful to determinate the emissivity and accurate temperature of the object in outdoor heterogeneous environments. The influence of external environmental factors on the object surface emissivity are analyzed in this study, which is very important to improve the measurement accuracy of the infrared thermal imaging instrument. This study reveals that the increased temperature will lead in the increase of the emissivity of nonmetallic materials first and then decreases slowly. In addition, as the ambient temperature higher, the emission rate of non-metallic object becomes smaller.

Thermography

Low emissivity

Thermal Emission

10.1088/1742-6596/2168/1/012018

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Citations (1)

Study the Test Method of Temperature and Humidity Monitoring Equipment in the Cold Chain Transportation Process

Journal of Physics Conference Series (2023)

Zhao Xia Lining Pei Xin Jia Meng Qu Zheng Zhang

Abstract Transportation objects include food cold chain logistics, flower, plant cold chain logistics, chemical cold chain logistics and other cold chain logistics. In order to improve the overall performance of the temperature and humidity monitoring equipment in the cold chain process, and further promote and improve the regional metering service system. This study is to analyze its dewpoint temperature stability, relative humidity stability and temperature stability to evaluate the performance of the dew point instrument. The results showed that the standard deviation of temperature, humidity and dew-point in reproducible experiments are 0.00°C, 0.07%RH and 0.01°C. The standard deviation of temperature, humidity and dew-point in stability experiments are 0.02°C, 0.33%RH and 0.066°C. Results show that the measurement method of this experiment meets the requirements of the measurement standards.

Dew point

Cold chain

Dew

Metering mode

10.1088/1742-6596/2437/1/012065

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