Factors Affecting the Temperature Variation Rate of Bamboo during High-frequency Heating

Authors

  • Liang Ji China Forestry Press, Beijing, China, 100032
  • Yanhe Liu Central South University of Forestry and Technology School of Materials Science and Engineering, Changsha, Hunan, China, 410004; Market Supervision Administration of Yeji District, Lu'an City, Anhui, China, 237431
  • Jianbo Zhou Harbin Research Institute of Forestry Machinery, State Forestry and Grassland Administration, Harbin, China, 150086; Key Laboratory Forestry of Electrical and Mechanical Engineering State Forestry and Grassland Administration, Harbin, China, 150086
  • Yongjie Lei Harbin Research Institute of Forestry Machinery, State Forestry and Grassland Administration, Harbin, China, 150086; Key Laboratory Forestry of Electrical and Mechanical Engineering State Forestry and Grassland Administration, Harbin, China, 150086
  • Haiyun Feng Harbin Research Institute of Forestry Machinery, State Forestry and Grassland Administration, Harbin, China, 150086; Key Laboratory Forestry of Electrical and Mechanical Engineering State Forestry and Grassland Administration, Harbin, China, 150086

Keywords:

Curved bamboo, Dielectric properties, Temperature rise rate, High-frequency heating

Abstract

High-frequency electromagnetic fields refer to electromagnetic waves with frequencies ranging from 100 kHz to 300 MHz. High-frequency medium heating has the advantages of uniform heating, rapid energy consumption, and environmental protection. While it has a wide range of applications, the use of high-frequency dielectric heating in the bamboo industry is rare. Understanding the influence of bamboo temperature rise rate in high-frequency heating could promote bamboo industry development. In this work, curved bamboo was tested with high-temperature energy for continuous heating. The influence of moisture content of bamboo, sample thickness, and high-frequency processing power on temperature rise rate were studied. The results showed that the water content of bamboo affected the temperature rise rate. The effect of high-frequency heating was highest when the moisture content of bamboo was close to 11%. The thickness of sample had little effect on the temperature rise rate, but the high-frequency power had a significant effect on the temperature rise rate. The temperature rise rate of the lower and higher frequency power levels increased slowly and was close to constant. The heating power was 11 kW, and the temperature rise rate was the highest.

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Published

2023-04-18

Issue

Vol. 18 No. 2 (2023)

Section

Research Article or Brief Communication