Simulation research of microwave heating efficiency for beamed energy thruster

doi:10.11949/j.issn.0438-1157.20181431

Abstract

Abstract:

Microwave beamed energy thruster is a kind of delivery tool using ground microwave beams to provide the energy to launch to the Earth 1st orbit from ground. The energy conversion is different with conventional microwave heating. In order to study the energy efficiency, the report gives a simple energy receiving module of thermal exchange system to simulate conversion process. Millimeter wave heating efficiency as well as maximum temperature have been analysised with the module. Further more, three fabric of exchange system was designed for 2-D simulation to explore the influence of structure. Genetic algorithm was used to optimize the parameters affecting the performance. Simulation results show that thermal exchange system performance follow with material permittivity damping which expected to be moderate. The maximum energy efficiency is over 30%, and the stabilization efficiency is around 23%.

Key words: beam thruster, microwave heating, energy efficiency, heat conduction, optimization

摘要：

微波束能推进是一种新的微波能传输利用方式，使用高强度吸波材料将电磁能转化为热能。针对其热交换器系统构建了简化能量接收模型，对毫米波加热能量转换效率及最高温度进行了初步研究，并设计了三种结构进行模拟仿真，最高效率超过30%，稳定效率在23%左右。使用遗传算法对影响性能的参数进行了优化，结果表明热交换器性能受吸波材料有效损耗因子影响，应保持在一个适中的水平。

关键词: 束能推进, 微波加热, 能量效率, 热传导, 优化

CLC Number:

TM 924.76

Hao YANG, Eryan YAN. Simulation research of microwave heating efficiency for beamed energy thruster[J]. CIESC Journal, 2019, 70(S1): 93-98.

杨浩, 闫二艳. 基于束能推进的微波加热效率仿真[J]. 化工学报, 2019, 70(S1): 93-98.

Figures/Tables 8

References 16

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参数	数值
复相对介电常数	9—0.1j
电导率/(S·m^-1)	3×10⁶exp(-1.5×10⁴/T)
密度/(kg·m^-3)	3217
比热容/(J·kg^-1·K^-1)	1000
热导率/(W·m^-1·K^-1)	24

参数	数值
复相对介电常数	9—0.1j
电导率/(S·m^-1)	3×10⁶exp(-1.5×10⁴/T)
密度/(kg·m^-3)	3217
比热容/(J·kg^-1·K^-1)	1000
热导率/(W·m^-1·K^-1)	24

参数	频率/GHz	相对介电常数	有效损耗因子	厚度/mm	热导率/(W·m^-1·K^-1)	入射功率/(MW·m^-2)	初始温度/K
值域	80,130	1,10	0,10	1,10	10,90	10,90	300,1000
静态1	88	6.13	0.4	1.72	20.4	47.8	762
静态2	108	9.01	0.2	2.53	44.4	83.6	433
动态1	129	6.67	0.1	4.60	34.0	56.4	300
动态2	130	10.00	0.8	6.22	55.6	78.8	300

参数	频率/GHz	相对介电常数	有效损耗因子	厚度/mm	热导率/(W·m^-1·K^-1)	入射功率/(MW·m^-2)	初始温度/K
值域	80,130	1,10	0,10	1,10	10,90	10,90	300,1000
静态1	88	6.13	0.4	1.72	20.4	47.8	762
静态2	108	9.01	0.2	2.53	44.4	83.6	433
动态1	129	6.67	0.1	4.60	34.0	56.4	300
动态2	130	10.00	0.8	6.22	55.6	78.8	300

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