LAPSE:2018.1174
Published Article
LAPSE:2018.1174
Slide Valves for Single-Screw Expanders Working Under Varied Operating Conditions
Yuting Wu, Ruiping Zhi, Biao Lei, Wei Wang, Jingfu Wang, Guoqiang Li, Huan Wang, Chongfang Ma
December 3, 2018
This paper fully describes the working principle of slide valves in single-screw expanders (SSEs). A geometric analysis of suction and volume ratio slide valves is presented to determine the relations between volume ratio, suction closure volume, discharge opening volume and slide valves displacement. An organic Rankine cycle (ORC) thermodynamic model with SSE integrated with slide valves is developed to analyze the power output of SSE and the net power output of ORC system and variation law of slide valves displacement. Analysis of a typical ORC system under changing operating conditions shows that the power output of the expander and the net output power of the ORC system with slide valves are much better than those without slide valves. When the condensing temperature is 40 °C and the waste availability is 80 kW, the increase in output power and net output power are approximately 3.4 kW and 5 kW, respectively. The presented geometric analysis of slide valves and the thermodynamic model integrated with slide valves can be used to provide a theoretical and technical basis for designing the slide valves of SSEs and the control strategies of slide valves under varied operating conditions.
Keywords
organic Rankine cycle (ORC), part-load, single-screw expander, slide valve
Subject
Suggested Citation
Wu Y, Zhi R, Lei B, Wang W, Wang J, Li G, Wang H, Ma C. Slide Valves for Single-Screw Expanders Working Under Varied Operating Conditions. (2018). LAPSE:2018.1174
Author Affiliations
Wu Y: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Zhi R: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Lei B: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Wang W: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Wang J: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Li G: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Wang H: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
Ma C: Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Heat Transfer and Energy Conversion of B
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Journal Name
Energies
Volume
9
Issue
7
Article Number
E478
Year
2016
Publication Date
2016-06-23
Published Version
ISSN
1996-1073
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PII: en9070478, Publication Type: Journal Article
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LAPSE:2018.1174
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doi:10.3390/en9070478
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Dec 3, 2018
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Dec 3, 2018
 
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Calvin Tsay
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