The Experimental Investigation of Scroll Expanders Operating in the ORC System with HFE7100 as a Working Medium

Abstract:

The paper presents the results of experimental investigation on the ORC system with a droplet separator (which was used to improve the quality of working medium vapour) and two scroll expanders, which operated individually. The research aimed at verifying the correctness of scroll expanders performance in the ORC installation, equipped with the electric flow heater for thermal oil as a heat source. The paper contains the characteristics of the heat exchangers installation that were obtained for the ORC system variant using a regenerative cycle. The tests were conducted for selected flow rates and various temperatures of the working medium HFE7100, glycol solution and thermal oil. The unit with a gear pump and a magnetic coupling functioned as a circulating pump. Following the results of tests carried out on two scroll expanders it may be concluded that the electric power output that was measured at the generator terminals was approximately 750 W. The maximum voltages generated by the expanders amounted to around 200 V and the maximum current was about 4 A.

• Periodical: Applied Mechanics and Materials (Volume 831)
• Pages: 245-255
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.831.245
• Online since: April 2016
• Authors: Tomasz Z. Kaczmarczyk, Eugeniusz Ihnatowicz
• Keywords: Biomass Boiler, CHP, ORC, Refrigerant HFE7100, Scroll Expander

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