[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(
)
沥青路面微波加热器电磁仿真与实验分析
)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
- 沥青路面微波加热器电磁仿真与实验分析
- 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.
- 为了研究微波加热再生沥青路面时的热电效率和再生温度分布的均匀性, 设计了一种波导激励腔, 并应用于微波加热器的结构设计.运用波导传输线理论, 确定了激励腔的结构尺寸.采用IE3D分别对磁控管探头(天线)与短路板间距、不同喇叭长度和口面尺寸、不同沥青混合料介电性能和加热腔口面与沥青路面不同距离4种情况进行了电磁仿真.结果表明:磁控管探头离短路板距离32.5 mm时为最佳安装位置;天线长度缩短是改善加热均匀性的主要因素;当集料为石灰石时, 其加热效果最好;通过调整加热器辐射口面与沥青路面间距, 可实现最大辐射效率.通过对4种不同情况的沥青混合料进行加热实验, 得到了与仿真基本一致的结果, 证实开发设计的微波加热器能够较好地实现阻抗匹配, 从而提高了热再生质量和效率.
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]