Abstract Charcoal production is a handicraft of oldest tradition. Various types have been developed. One of the most popular in Europe was the circular kiln with vertically piled logs. Besides traditional techniques new developments arose during the last decades like drum kilns in Namibia. Infrared spectroscopy was applied to assess pyrolysis temperatures using an already existing prediction model. A comparison of the two very different kiln techniques revealed systematic differences in the pyrolysis process and profile, but also comparable temperature ranges from 400 to 700 °C. These results correspond to literature values for circular kilns and rectangular kilns with horizontally piled logs. Temperature measurements by means of thermocouples supported infrared spectroscopic results.

中文翻译：

---

奥地利传统圆窑和纳米比亚滚筒窑的热解曲线

摘要 木炭生产是一项古老的传统手工艺。已经开发了各种类型。欧洲最受欢迎的窑炉之一是垂直堆积原木的圆形窑炉。除了传统技术外，在过去的几十年里出现了新的发展，如纳米比亚的鼓窑。使用现有的预测模型，应用红外光谱来评估热解温度。两种截然不同的窑炉技术的比较揭示了热解过程和剖面的系统差异，但也显示了 400 至 700 °C 的可比温度范围。这些结果对应于具有水平堆积原木的圆形窑和矩形窑的文献值。通过热电偶进行的温度测量支持红外光谱结果。