秸秆料包微波加热过程的温度分布的数值模拟

为深入了解微波加热过程，该文主要对秸秆料包微波加热过程的升温特性进行研究。将微波加热考虑成内热源，并使用Lambert定律对内热源分布进行简化计算，进而采用具有内热源形式的导热微分方程对微波加热过程中大尺寸物料内的温度分布进行了数值计算。最后，采用自制的微波加热装置，对秸秆料包微波加热过程中的温度分布进行了测量，并与模拟结果进行了对比。结果表明：数值模拟结果能较好地反映微波加热过程中大尺寸物料内部的温度分布，进而揭示大尺寸物料内部的传热规律。研究结果对微波热解装置的设计和优化，以及微波热解技术的推广利用有一定帮助。

Temperature distribution simulation of microwave heating process of straw bale

For the investigation on microwave heating process, heating characteristics of straw bale under microwave heating were studied in this paper. Microwave heating was considered as an internal heat source, and Lambert's law was adopted to simplify the distribution of internal heat source. And then the temperature distribution of large-sized materials during microwave heating was calculated using a heat conduction differential equation with an internal heat source. Finally, the temperature distribution of straw bale during microwave heating was measured on a microwave heating device self-designed and constructed and compared with the simulation results. The comparison results show that numerical simulation results are basically able to reveal the heat transfer mechanisms during the microwave heating process and have a significant guidance to the utilization of microwave pyrolysis.