 Experiment on pumpless Rankine-type cycle with scroll expanderNoboru Yamada, Masataka Watanabe and Akira Hoshi Energy, 2013, vol. 49, issue C, 137-145 Abstract: The first experiment on a pumpless Rankine-type cycle (PRC) with a practical expander was performed to verify the feasibility of the PRC in power generation from low-grade heat sources. The PRC is an alternative to a Rankine cycle (RC) for lower output power and lower- and/or unstable temperature heat sources, where the conventional RC is rarely economically efficient owing to the low efficiency of the working fluid pump. The PRC mainly consists of a scroll expander, two heat exchangers, and switching valves for the expander and heat exchangers. A switching valves method that does not require the use of a working fluid pump is employed to control the PRC, hence avoiding problems such as cavitation caused by the working fluid pump. A mini-PRC experimental system showed that the PRC could successfully function with a scroll expander and produce actual power of 20 W. In addition, the PRC generated relatively larger net power than the conventional organic Rankine cycle in a very small output range. Keywords: Rankine cycle; Organic Rankine cycle; Waste heat recovery; Working fluid pump; Scroll expander; Cycle efficiency (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:49:y:2013:i:c:p:137-145 DOI: 10.1016/j.energy.2012.10.027 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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