文章基本信息

标题：Optimization-based Investigations of a Thermofluidic Engine for Low-grade Heat Recovery
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作者：Yukun Wang ; Christos N. Markides ; Benoît Chachuat 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：18
页码：690-695
DOI：10.1016/j.ifacol.2018.09.343
语种：English
出版社：Elsevier
摘要：AbstractThis paper presents an analysis of the non-inertive-feedback thermofluidic engine (NIFTE) under cyclic steady-state conditions. The analysis is based on a nonlinear model of NIFTE that had previously been validated experimentally, and applies an optimization-based approach to detect the cyclic steady states (CSS). The stability of the CSS is furthermore determined by analyzing their monodromy matrix. It is found that NIFTE can exhibit multiple CSS for certain values of the design parameters, which may be either stable or unstable, a result that had not been reported before. Subsequently, a parametric study is conducted by varying key design parameters, revealing that higher efficiencies could be achieved by controlling the engine at different CSS, including unstable ones. Lastly, the paper investigates the trade-offs between efficiency and work output in NIFTE.
关键词：Keywordslow-grade heatthermofluidic oscillatorNIFTEexergetic efficiencycyclic steady statelimit cyclestability analysisbifurcation analysis