DSpace university logo mark
Advanced Search
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Articles in academic journal >

温泉熱発電 [油ポンプなしのねじ膨張機の湿り運転特性]


File Description SizeFormat
kikaiB524_1161.pdf409.29 kBAdobe PDFView/Open

Title: 温泉熱発電 [油ポンプなしのねじ膨張機の湿り運転特性]
Other Titles: Power from a Thermal Spring (Characteristics of a Small-size Screw Expander eith Wat Working Medium)
Authors: 吉田, 孝男 / 栗須, 正登 / 河部, 秀彦 / 児玉, 好雄
Authors (alternative): Yoshida, Takao / Kurisu, Masato / Kawabe, Hidehiko / Kodama, Yoshio
Issue Date: 25-Apr-1990
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 56(524) p.1161-1166 1990
Abstract: The performance characteristics of a small-size screw expander for energy conversion of hot springs are described in this report. Instead of lubrication oil, the test machine is fed with a high-temperature oily working medium liquid for the lubricant. This idea is proposed in order to omit the lubricationpump. By feeding of the oily working medium liquid lubricant, the working fluid must be of low quality (dryness fraction). For the calculation of wet expansion, we introduce the actual adiabatic expansion with thermophysical properties of the actual working medium. This expansion is the isentropic expansion in which the adiabatic exponent χ is variable. The calculated values of this method give fairly good agreement with the experimental results. In this paper, as the result of the calculation and experimentation, we report the performance characteristics of a small-size screw expander operated with a low-quality (χ=0.6~1.0) actual working medium.
Keywords: Power Plant / Geothermal Energy / Energy Conversion / Working Medium / Screw Expander / Dryness Fraction
URI: http://hdl.handle.net/10069/6701
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6701

All items in NAOSITE are protected by copyright, with all rights reserved.

 

Valid XHTML 1.0! Copyright © 2006-2015 Nagasaki University Library - Feedback Powerd by DSpace