[1] Zhu Songqing, Zhang Zhisheng, Shi Tailong, et al. Electromagnetic simulation and experimental analysisof microwave heaters for asphalt pavements [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 410-416. [doi:10.3969/j.issn.1003-7985.2011.04.013]

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Electromagnetic simulation and experimental analysisof microwave heaters for asphalt pavements()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 4

Page:

410-416

Research Field:

Electrical Engineering

Publishing date:

2011-12-31

Info

Title:

Electromagnetic simulation and experimental analysisof microwave heaters for asphalt pavements

Author(s):

Zhu Songqing¹;  2;  Zhang Zhisheng¹;  Shi Tailong³

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Automation, Nanjing Institute of Technology, Nanjing 211167, China
³School of Information Science and Engineering, Southeast

Keywords:

microwave heater;  excitation cavity;  structural design;  electromagnetic simulation;  temperature distribution;  experimental analysis

PACS:

TM15

DOI:

10.3969/j.issn.1003-7985.2011.04.013

Abstract:

In order to study the thermoelectric efficiency of microwave heating and reproduction of asphalt pavements and the uniformity of reproduction temperature distribution, a waveguide excitation cavity is designed and applied to the structural design of a microwave heater. The structural sizes of the incentive cavities are determined based on the waveguide transmission line theory. Using IE3D software, electromagnetic simulations are respectively carried out in four different situations, including the distances between the magnetron probes(antennas)and a short-circuit board, different horn electric lengths and aperture sizes, different dielectric properties of the asphalt mixture, and the distances between the asphalt surface and the mouth cavity. The results show that, when the distance between the magnetron probe and the short-circuit board is 32.5 mm, it is the best installation site; reduction of aerial length is the main factor in improving the heating uniformity. When the aggregate is limestone, the best heating effect can be produced. Maximum radiation efficiency can be realized by adjusting the space between the heater radiation port and the asphalt pavement. The experimental results of asphalt mixture heating in four different situations have a substantial agreement with the simulation results, which confirms that the developed microwave heater can achieve better impedance matching, thus improving the quality and efficiency of heating regeneration.

References:

[1] Zhu Songqing, Shi Jinfei, Wang Hongxiang. Modeling and experiment of microwave heating for hot in-place recycling of asphalt pavements[J]. Journal of Southeast University: Natural Science Edition, 2006, 36(3): 393-396.(in Chinese)
[2] Zhu Songqing, Shi Jinfei. Structural design and experimental research of microwave radiation heater for asphalt pavements[J]. Journal of Southeast University: English Edition, 2009, 25(1):68-73.
[3] Boyko L L, Lederer E H. Microwave road patch system [C]//IEEE MTT-S International Microwave Symposium. Ottawa, Ont, Canada, 1978: 360-362.
[4] Pang Chuanxin, Yu Zhiyuan.Optimization design of the radiation device in a microwave system for asphalt heating [J].Vacuum Electronics, 2007(2):27-29.(in Chinese)
[5] Heriberto J D, Michael H T. Implementation of the pyramidal-horn antenna radiation-pattern equations using Mathcad [J]. IEEE Antennas and Propagation Magazine, 1999, 41(5): 96-99.
[6] Chen Shaoping. Study about open microwave heater [J].Modern Electronics Technique, 2006(7):121-122, 125.
[7] Zeland Software, Inc. IE3D manual[M]. Fremont, CA, USA: Zeland Software, Inc., 2002
[8] Guan Denggao, Wang Shugen.The electromagnetic wave-absorbing properties of mineral materials and their application [J]. Multipurpose Utilization of Mineral Resources, 2006(5):17-21.(in Chinese)
[9] Hipple A V. Dielectric materials and applications[M].Cambridge, MA, USA:The MIT Press, 1954:63-74.
[10] Hopstock D M, Zanko L M. Minnesota taconite as a microwave-absorbing road aggregate material for deicing and pothole patching applications [J]. Northland Transporter, 2004(3): 1-16.
[11] Cuccurullo G, Berardi P G, Carfagna R, et al. IR temperature measurement in microwave heating [J]. Infrared Physics and Technology, 2002, 43(3/4/5): 145-150.

Memo

Memo:

Biographies: Zhu Songqing(1969—), male, doctor; Zhang Zhisheng(corresponding author), male, doctor, professor, oldbc@seu.edu.cn.
Foundation items: The Sci-Tech Achievements Transformation Program of Colleges and Universities in Jiangsu Province(No.JH09-13), the Research Fund of Nanjing Institute of Technology(No.YKJ201005).
Citation: Zhu Songqing, Zhang Zhisheng, Shi Tailong. Electromagnetic simulation and experimental analysis of microwave heaters for asphalt pavements[J].Journal of Southeast University(English Edition), 2011, 27(4):410-416.[doi:10.3969/j.issn.1003-7985.2011.04.013]

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