【作者】 张大海；

【导师】 魏新利；

【作者基本信息】 郑州大学 ， 化工过程机械， 2011， 硕士

【摘要】 文章对100℃左右低温热能发电系统进行了如下研究：利用matlab调用NIST物理性质软件接口,编写了一个热力循环模拟系统,包括最小系统和添加一级回热的系统；针对本实验室有机朗肯循环试验台建设中遇到的一些实际问题,总结出有机朗肯循环中影响工质选择的主要因素；通过对十种常用干工质的比较分析,得出针对100℃左右的热源,采用R141和R245fa作为实际工程应用的候选工质；所编制的程序可以用于各种温度段的ORC系统工质筛选,并能够绘出相关因素分析图表。针对各种形式的有机朗肯循环发电膨胀机,通过试验测试平台对空气马达改装,涡旋压缩机改装,以及对车用涡轮增压器的向心透平膨胀机的研究,综合国内外的研究,得出向心透平膨胀机最适合用于小型有机朗肯循环低温发电系统。最后,针对本课题组准备试制的一台适合本实验平台的向心透平膨胀机的主要结构,包括喷嘴、动叶进行数值模拟,检验并优化了一些参数,为后续研究做好准备。更多还原

【Abstract】 The paper do some Research on the low-temprature heat recovery by ore power generate system, as follows:Based on Organic Rankine cycle’s Low-temperature thermal power generation heat analysis was done, and detected the construction of platform. Through matlab using the Physical properties of software’s interfaces fabricated a thermodynamic cycle simulation system which include the smallest system and a heat recovery system. At the same time, we made a summary about refrigerant’s requiring which is a important factor of Organic Rankine cycle from practice problems that we came across in the constructing of test bench.We compared ten refrigerants at 100℃, then concluded when we chose R142b, the comprehensive performance reached optimal. The program we fabricated can be used filter different temperature range’s system refrigerant, then draw related factors charts. Organic Rankine cycle power generation’s another important part is power machinery. On all kinds of power machinery, this article utilize the test detecting platform to modify air motor and scroll compressor, we also discussed automotive turbocharger’s radial expansion turbine, then we integrated articles from many research institutions. Finally, we reach a conclusion that radial expansion turbine is the best selection about Organic Rankine cycle’s Low-temperature thermal power generation. At last, our task team made value simulation to a radial expansion turbine’s main structure include nozzle and blade which we prepared for our test platform, then we detected and optimized some parameters for we can obtain more discovery in the future.更多还原