Experimental investigation on a 3 kW organic Rankine cycle for low-grade waste heat under different operation parameters. (25th February 2017)

• Record Type: Journal Article
• Authors: Yang, Shih-Cheng; Hung, Tzu-Chen; Feng, Yong-Qiang; Wu, Chia-Jung; Wong, Kin-Wah; Huang, Kuo-Chen
• Is Part Of: Applied thermal engineering. Volume 113(2017:Feb.)
• Page Start: 756
• Page End: 764
• Publication Date: 2017-02-25
• Subjects: Organic Rankine cycle -- Pressure drop -- Condenser temperature -- Expander shaft power -- Thermal efficiency; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2016.11.032
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: Experimental study of a 3 kW organic Rankine cycle (ORC) system using R245fa has been investigated. Effect of pressure drop, degree of superheating and condenser temperature are examined. Pressure drop exhibits a relatively higher sensitivity on system performance. The maximum electrical power and thermal efficiency are 1.89 kW and 5.92%, respectively. Abstract: The experimental study of a 3 kW organic Rankine cycle (ORC) system using an open-drive scroll type expander and R245fa has been investigated. The expander is originally hermetic-type refrigerant scroll compressor with built-in volume ratio of 3.24. The effects of pressure drop, degree of superheating and condenser temperature on system overall performance are examined. Moreover, the detailed behavior of pump and expander are explored. The experimental results show that the pressure drop exhibits a relatively higher sensitivity on system performance. The condenser temperature exhibits a negative effect on electrical power, thermal efficiency and system generating efficiency. The maximum expander shaft power, electrical power, thermal efficiency and system generating efficiency are 2.64 kW, 1.89 kW, 5.92% and 3.93%, respectively. The highest thermal efficiency does not represent the highest expander shaft power.