【作者】 张鑫；

【导师】 张亚君；

【作者基本信息】 华南理工大学 ， 化学工程， 2014， 硕士

【摘要】 化石燃料日益短缺，石油价格逐渐上涨，使用传统燃料的热机面临着空前的能源危机。研究可以使用多种热源的斯特林发动机，在解决能源紧张和环境污染等问题时具有特别重要的意义。近年来，以斯特林发动机为核心装置的热电联产系统在欧美发展迅速，但在国内，对斯特林发动机的研究还处于起步阶段，对基于斯特林发动机热电联产系统的研发更加匮乏。因此，非常有必要对斯特林发动机的运行进行仿真模拟，设计研发以天然气等为燃料的斯特林发动机热电联产系统。本课题研究了斯特林发动机的四种循环分析方法，通过对比得出结论：实用等温分析法能简单而又准确地分析斯特林发动机的各种工况，是目前初步估算斯特林发动机功率和效率最合适的方法。在实用等温分析法的基础上，考虑工质在循环中的流阻损失以及各种热损失，建立了一个能够分析和计算四缸双作用斯特林发动机工作循环的模型，利用该模型，获得了四个气缸以及不同循环部分的各种运行参数。编写了一个能够模拟四缸双作用斯特林发动机工作循环的程序，同时，应用该程序对上海齐耀动力技术有限公司研发的四缸双作用斯特林发动机进行了仿真模拟，并考察了热区冷区温度比、循环压力和死容积等参数对工作循环的影响。研究表明：在输入热量为161.939kW时，发动机有效功率为51.379kW、输出电功率为47.781kW、加热器的热容量为140.887kW、冷却器的热容量为83.257kW、发动机有效效率为0.317、发电效率为0.295。对上海齐耀动力技术有限公司研发的四缸双作用斯特林发动机组进行了实验测试，并应用仿真程序模拟出了对应的值，结果显示仿真模拟值和实验测试值比较接近。在此基础上，充分发挥能量“梯级利用”的理念，设计了一个基于斯特林发动机的热电联产系统。更多还原

【Abstract】 As energy issues become more prominent, the oil price become higher and higher, thetraditional heat engine is facing an unprecedented energy crisis. Research in the multi-fuelenergy Stirling engine has great significance in solving the energy crisis and reduceenvironmental pollution. In recent years, the cogeneration systems with the Stirling engine asthe core unit developed rapidly in Europe, but in China, the Stirling engine research is still inits infancy, and the development of a Stirling engine combined heat and power system is morescarce. Therefore, the Stirling engine running simulation, design and development ofnatural-gas-based Stirling engine cogeneration system is very necessary.This graduation project topic studied four Stirling engine cycle analysis method, bycontrast showed that, practical isothermal analysis can simply and accurately analyze thevarious conditions of the Stirling engine, this is the most appropriate method to preliminaryestimate the power and efficiency of the Stirling engine.Based on the practical isothermal analysis, considering the flow resistance causedworking fluid loss in the circulation, and a variety of heat loss, a model for analyzing andcalculating the four-cylinder and double-acting Stirling engine work cycle can be created.With this model, various operating parameters of the four cylinder and the different parts ofthe work cycle were got.The simulation of double-acting cylinder Stirling engine work cycle can be programmedas a software, with this software, a four-cylinder double-acting Stirling engine developed byShanghai MicroPowers Ltd. has been simulated, the effects of the hot zone and cold zonetemperature, circulation pressure and dead volume and other parameters of the working cyclewere also checked, the results showed that with the heat input161.939kW, the engineeffective power was51.379kW, the output power was47.781kW, heater and cooler heatcapacities were140.887kW and83.257kW, engine effective efficiency and power generationefficiency were0.317and0.295.A four-cylinder double-acting Stirling engine developed by Shanghai MicroPowers Ltd.were experimental tested in this study, the experimental results were compared with the same simulation model built in this study, the results showed the value of simulation model andexperimental test matched with each other, meanwhile, on this basis, took advantage ofenergy "cascade utilization" mechanism, designed a Stirling engine-based combined heat andpower system.更多还原