Abstract A 3D coupled electromagnetic thermal model was developed using COMSOL 4.0 to predict the electromagnetic field distribution and temperature profile in pathological tissue samples immersed in a reagent inside the oven cavity. The effect of the volume of reagent on the mean heating rate and heating uniformity within the tissue sample was investigated. Also, the effect of using a water load, as a method of temperature control, is emphasized. A well insulated K type thermocouple connected to a PC is used for model validation. Good agreement is found between experimental and simulated temperature profiles. Results show that as the volume of reagent increases, the mean heating rate decreases and temperature homogeneity increases. Also, it is possible to minimize overshooting temperature values inside the tissue sample and enhance tissue uniformity by about 27% using 100 ml of water load and 42.26% using 150 ml. Domestic microwave oven is a low cost economical tool that can speed up tissue processing steps. Achieving uniform heating inside the microwave oven is the key factor for improving workflow inside pathological labs and maintaining tissue quality and integrity.

中文翻译：

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提高家用微波炉内病理组织标本的加热均匀性

摘要 使用 COMSOL 4.0 开发了 3D 耦合电磁热模型，以预测浸入炉腔内试剂中的病理组织样本的电磁场分布和温度分布。研究了试剂体积对组织样品内的平均加热速率和加热均匀性的影响。此外，还强调了使用水负荷作为温度控制方法的效果。连接到 PC 的绝缘良好的 K 型热电偶用于模型验证。在实验和模拟温度曲线之间发现了良好的一致性。结果表明，随着试剂体积的增加，平均加热速率降低，温度均匀性增加。还，使用 100 毫升水负载可以将组织样本内的温度过冲值降至最低，并将组织均匀度提高约 27%，使用 150 毫升水可提高 42.26%。家用微波炉是一种低成本、经济的工具，可以加快组织处理步骤。在微波炉内实现均匀加热是改善病理实验室内部工作流程和保持组织质量和完整性的关键因素。