关于可调压缩比斯特林热机的物理演示实验  

THE DEMONSTRATION EXPERIMENT OF STIRLING ENGINE WITH ADJUSTABLE COMPRESSION RATIO

作　　者：王维扬[1] 张黎莉[1] 孙明明[1] 吴平[1] 

机构地区：[1]北京科技大学应用物理系,北京100083

出　　处：《物理与工程》2015年第6期41-44,48,共5页Physics and Engineering

基　　金：教育部高等学校大学物理课程教学指导委员会教学研究立项项目(DWJZW201407hb);北京高等学校教育教学改革立项项目(2014-ms029);北京科技大学教育教学改革于研究重点项目(JG2014Z03)

摘　　要：本文设计了一种可调节压缩比的斯特林热机装置,可实现斯特林热机的压缩比(最大体积与最小体积的比值)动态调节以及压强(p)-体积(V)曲线的实时监测.阐述了轨尺在双缸双活塞斯特林热机中实现动态调节的机理,编写了采集热机工作过程中压强和体积的Labview程序.通过调节轨尺完成压缩比的动态调节,演示了斯特林热机在不同压缩比条件下的工作状态,分析了压缩比影响斯特林热机性质的机理.该装置制作简单,可使用酒精灯作为热源,用于物理演示实验教学.The primary purpose of this study is to design an improved Stirling engine, which fulfills the idea of adjusting the compression ratio （the ratio of the maximum volume and the minimum volume） of Stifling engine during its operation and monitoring the real-time pres- sure-volume curve. The mechanism of the utility of rail gauge in Stirling engine is elaborated, and the Labview program for acquiring data of pressure and volume is written. The working condition of Stirling engine under different compression ratios is demonstrated by adjusting the rail gauge, and the mechanism of compression ratio affecting properties of Stifling engine is analyzed. With alcohol lamp as heat source, the device can be made simply and used for in physics demonstration experiment teaching.

关 键 词：斯特林热机 动态可调压缩比 轨尺 物理演示实验 LABVIEW程序 

分 类 号：TK05-4[动力工程及工程热物理] G642[文化科学—高等教育学]