High temperature flooded expansion for solar thermal power generation
High temperature flooded expansion for solar thermal power generation
复制标题
太阳能热发电高温淹没膨胀
DOI：
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发表时间：
2014
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影响因子：
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通讯作者：
N. James
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文献类型：
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作者：
N. James
James, Nelson, m.s.m.e.，普渡大学，2014年8月。太阳能热发电的高温淹水膨胀。主要教授：James E. Braun, Eckhard A Groll，机械工程学院。尽管太阳能的使用在过去十年中迅速增长，但化石燃料发电仍然是一种成本较低的发电方式。液体淹没爱立信循环（LFEC）作为一种高效的电力循环进行了研究，以降低聚光太阳能（CSP）发电厂的成本，并有助于解决这一成本差距。高温水淹膨胀被认为是利用LFEC作为动力循环的主要挑战之一。开发了热力学模型来帮助评估LFEC的性能，并构建了一个负载架来测试高温淹没涡旋膨胀机的原型。热力学模型允许研究工作流体选择对LFEC性能的影响。发现驱油剂的选择对高温作业尤为重要。单个液体的最大工作温度、比热容和蒸汽压决定了LFEC的潜在性能。该模型用于帮助开发原型高温涡旋膨胀机的设计标准。实验负载架的工质选用氮气和导热油Duratherm LT。收集到的数据显示不佳
James, Nelson A. M.S.M.E., Purdue University, August 2014. High Temperature Flooded Expansion for Solar Thermal Power Generation. Major Professors: James E. Braun, Eckhard A Groll, School of Mechanical Engineering. Even though solar power usage has seen rapid growth over the past decade, fossil fuel generation sources are still generally a less expensive means of producing power. The Liquid-Flooded Ericsson Cycle (LFEC) was investigated as a high efficiency power cycle for reducing the cost of concentrated solar power (CSP) plants and helping to address this cost disparity. High temperature flooded expansion was identified as one of the main challenges in regards to utilizing the LFEC as a power cycle. Thermodynamic models were developed to help assess the performance of the LFEC and a load stand was constructed to test a prototype high temperature flooded scroll expander. The thermodynamic model allowed for the investigation of the impacts of working fluid selection on the performance of the LFEC. The selection of the flooding agent was found to be of particular importance for high temperature operation. The maximum operating temperature, specific heat capacity, and vapor pressure of individual liquids governed the potential performance of the LFEC. This model was used to help develop design criteria for a prototype high temperature scroll expander. Nitrogen and the thermal oil Duratherm LT were chosen as the working fluids for the experimental load stand. The data collected showed poor