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一、前言热气机具有噪音低、排气污染少、燃用多种燃料、热效率高等非常吸引人的特性,从节能观点来看,高热效率的潜力在上述特性中是最为重要的。众所周知,热气机的效率主要取决于发动机冷、热腔间的温度差。对具有金属热端部件的热气机,工作温度限制在700℃左右,总效率最高约37％。若使用陶瓷材料,则工作温度可从700℃提高到1000℃,效率也将相应提高。而且,从陶瓷零件适用于冲击较小的场合来说,陶瓷材料用于热气机也是合适的。
First, the foreword The heat engine has the characteristics of low noise, less exhaust pollution, burning a variety of fuels, high thermal efficiency and so attractive, from the energy point of view, the potential of high thermal efficiency in the above characteristics is the most important. As we all know, the efficiency of the heat engine depends mainly on the temperature difference between the cold engine and the hot engine. For hot gas machines with metal hot end components, the operating temperature is limited to about 700 ° C and the total efficiency is up to about 37%. If the use of ceramic materials, the working temperature can be increased from 700 ℃ to 1000 ℃, the efficiency will be increased accordingly. Moreover, ceramic materials are also suitable for use in hot air machines where ceramic parts are suitable for applications where impact is small.