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一、前言近几年来,远红外加热干燥技术在我国各行各业中得到了广泛的推广和应用,在节能、提高生产效率和提高产品质量等方面都已取得了显著的经济效益。在红外加热干燥理论方面,日本细川修克等人的“匹配吸收”加热理论在国内外均有很大的影响,是我国近几年红外加热干燥技术的主要指导理论之一。近年来,我国有人提出,匹配吸收只适用于薄物质的干燥,而对于厚的物质,如木材、肥皂等,则应用“非匹配吸收”加热理论。本文通过实验和计算指出:由于绝大多数物质和水分对红外辐射源所发射的2～15μm波长的红外辐射都是不透明的,均能在极薄的表层内完全吸收,热辐射源的辐射光谱与物质的吸收之间总的说是“自然匹配”的。因而在实际应用中没有必要去过多地追求“匹配吸收”。
I. Foreword In recent years, far-infrared heating and drying technology has been widely promoted and applied in all walks of life in our country and significant economic benefits have been achieved in energy saving, production efficiency improvement and product quality improvement. In infrared heating and drying theory, Japan Hosokawa Xuk et al. “Matching absorption” heating theory has a great influence both at home and abroad, is one of the main guiding theory of infrared heating and drying technology in our country in recent years. In recent years, it has been suggested in our country that the matching absorption is only applicable to the drying of thin matter, and that for thick materials such as wood and soap, the theory of “non-matched absorption” heating is applied. In this paper, experiments and calculations show that: Because most of the material and moisture on the infrared radiation emitted by the 2 ~ 15μm wavelength of infrared radiation are opaque, can be completely absorbed in the ultra-thin surface, the radiation spectrum of thermal radiation In general, it is “naturally matched” with the absorption of matter. Therefore, it is unnecessary to excessively pursue “matching absorption” in practical applications.