Affiliation:
1. School of Science and Engineering, The University of Ballarat, P.O. Box 663, Ballarat 3353, Victoria, Australia
Abstract
Positive displacement expanders are quickly gaining popularity in the fields of micropower generation and refrigeration engineering. Unlike turbomachines, expanders can handle two-phase flow applications at low speed and flow rate levels. This paper is concerned with a simple-design positive displacement expander based on the limaçon of Pascal. The paper offers an insight into the thermodynamic workings of the limaçon gas expander and presents a mathematical model to describe the manner in which the port locations affect the expander performance. A stochastic optimization technique is adopted to find the locations, for the expander ports, which produce best expander performance for given chamber dimensions. The operating speed and other parameters will be held constant during the optimization procedure. A case study is offered in this paper to prove the validity of the presented approach, and comments are given on how various operating parameters affect system performance in the limaçon design.
Subject
Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering
Reference24 articles.
1. Experimental Testing of Gerotor and Scroll Expanders Used in, and Energetic and Exergetic Modelling of, an Organic Rankine Cycle;Mathias;ASME J. Energy Resour. Technol.
2. Testing and Modelling A Scroll Expander Integrated Into An Organic Rankine Cycle;Lemort;Appl. Therm. Eng.
3. Solar Rankine Cycle System Using Scroll Expander;Saitoh;J. Environ. Eng.
4. The Expressor: An Efficiency Boost to Vapour Compression Systems by Power Recovery From the Throttling Process;Smith
5. Research on a Scroll Expander Used for Recovering Work in a Fuel Cell;Xiaonjun;Int. J. Thermodyn.
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献