Optimum design of lima莽on gas expanders based on thermodynamic performance
- 作者：Ibrahim A. Sultan ; i.sultan@ballarat.edu.au
- 关键词：Expander ; Limacon ; Isentropic ; Energy ; Thermodynamic ; Positive displacement
- 刊名：Applied Thermal Engineering
- 出版年：2012
- 期刊代码：8_13594311
- 类别：ce
- 出版时间：June, 2012
- 卷：39
- 期：Complete
- 页码：188-197
- 文件大小：853 K
摘要
Positive displacement expanders are acquiring popularity due to the current push to harvest energy from low-grade heat resources which have been previously overlooked. The lima莽on technology does offer a simple and reliable design with a considerable potential for small-size (鈮?聽kW) power plants. This paper presents a thermodynamic model for the lima莽on design and goes on to utilise this model in an optimisation procedure adopted to calculate the expanders geometric parameters for specific power and operating constraints. The numerical method employed to solve the thermodynamic model is presented for the benefit of the reader. Two design case studies, for expanders with and without an inlet control valve, are offered at the end of the paper to prove the validity of the presented concepts and their suitability for the analysis.