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ARTICLE
Experimental Investigation of Organic Rankine Cycle (ORC) for Low Temperature Geothermal Fluid: Effect of Pump Rotation and R-134 Working Fluid in Scroll-Expander
Nugroho Agung Pambudi1,*, Santiko Wibowo1, Ranto1, Lip Huat Saw2
1 Energy and Society Laboratory, Mechanical Engineering Education, Universitas Sebelas Maret, Surakarta, 57126, Indonesia
2 Lee Kong Chian Faculty of Engineering and Science, UTAR, Kajang, 43000, Malaysia
* Corresponding Author: Nugroho Agung Pambudi. Email:
Energy Engineering 2021, 118(5), 1565-1576. https://doi.org/10.32604/EE.2021.016642
Received 08 April 2021; Accepted 09 June 2021; Issue published 16 July 2021
Abstract
Organic Rankine Cycle (ORC) is one of the solutions to utilize a low temperature geothermal fluid for power generation. The ORC system can be placed at the exit of the separator to extract energy from brine. Furthermore, one of the main components of the system and very important is the pump. Therefore, in this research, the pump rotation is examined to investigate the effect on power output and energy efficiency for low temperature geothermal fluid. The rotation is determined by using an inverter with the following frequencies: 7.5, 10, 12.5, 15 and 17.5 Hz, respectively. R-134 working fluid is employed with 373.15 K evaporator temperature in relation to the low temperature of the geothermal fluid. Furthermore, the condenser temperature and fluid pressure were set up to 293.15 K and 5 × 10
5 Pa, respectively. This research uses a DC generator with a maximum power of 750 Watt and the piping system is made from copper alloy C12200 ASTM B280 with size 1.905 × 10
−2 m and a thickness of 8 × 10
−4 m. The results showed that there is an increase in mass flow rate, enthalpy and generator power output along with increasing pump rotation. In addition, it showed that the maximum generator output power was 377.31 Watt at the highest pump rotation with a frequency of 17.5 Hz.
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Cite This Article
APA Style
Pambudi, N.A., Wibowo, S., Ranto, , Saw, L.H. (2021). Experimental investigation of organic rankine cycle (ORC) for low temperature geothermal fluid: effect of pump rotation and R-134 working fluid in scroll-expander. Energy Engineering, 118(5), 1565-1576. https://doi.org/10.32604/EE.2021.016642
Vancouver Style
Pambudi NA, Wibowo S, Ranto , Saw LH. Experimental investigation of organic rankine cycle (ORC) for low temperature geothermal fluid: effect of pump rotation and R-134 working fluid in scroll-expander. Energ Eng. 2021;118(5):1565-1576 https://doi.org/10.32604/EE.2021.016642
IEEE Style
N.A. Pambudi, S. Wibowo, Ranto, and L.H. Saw "Experimental Investigation of Organic Rankine Cycle (ORC) for Low Temperature Geothermal Fluid: Effect of Pump Rotation and R-134 Working Fluid in Scroll-Expander," Energ. Eng., vol. 118, no. 5, pp. 1565-1576. 2021. https://doi.org/10.32604/EE.2021.016642