DOI QR코드

DOI QR Code

Performance Analysis of WHR-ORC Using Hydrocarbon Mixtures for 20kW Gross Power at Low Temperature

  • Kwakye-Boateng, Patricia (Graduate School of Refrigeration and Air Conditioning Engineering, Pukyong National University) ;
  • Yoon, Jung-In (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University) ;
  • Hui, Kueh Lee (Department of Electrical Engineering, Dong-A University) ;
  • Kim, Hyeon-Uk (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University)
  • 투고 : 2014.10.27
  • 심사 : 2014.12.02
  • 발행 : 2014.12.31

초록

Exploitation of renewable energies is on the increase to mitigate the reliance on fossil fuels and other natural gases with rocketing prices currently due to the depletion of their reserves not to mention their diverse consequences on the environment. Divergently, there are lots of industries "throwing" heat at higher temperatures as by products into the environment. This waste heat can be recovered through organic Rankine systems and converted to electrical energy with a waste heat recovery organic Rankine cycle system (WHR-ORC). This study uses the annual average condenser effluent from Namhae power plant as heat source and surface seawater as cooling source to analyze a waste heat recovery organic Rankine cycle using the Aspen HYSYS simulation software package. Hydrocarbon mixtures are employed as working fluid and varied in a ratio of 9:1. Results indicate that Pentane/Isobutane (90/10) mixture is the favorable working fluid for optimizing the waste heat recovery organic Rankine cycle at the set simulation conditions.

키워드

참고문헌

  1. A. Bourji and A. Winstead, 2013, "Optimizing an ORC, American Institute of Chemical Engineers", CEP, pp. 35-39.
  2. S. Devotta and F. A. Holland, 1985, "Comparison of theoretical Rankine power cycle performance data for 24 working fluids", Heat Recovery Systems, Vol. 5, pp. 503-510. https://doi.org/10.1016/0198-7593(85)90217-6
  3. Johnson I. and Choate W. T, "Waste Heat Recovery: Technologies and Opportunities in the U.S. Industry", BCS, Inc. http://www1.eere.energ y.gov, 2008, date accessed; 07/11/2013.
  4. T.C. Hung, S.K. Wang, C.H. Kuo, B.S. Pei and K.F. Tsai, 2010, "A study of organic working fluids on system efficiency of an ORC using low-grade energy sources", Energy, Vol. 35, pp. 1403-1411. https://doi.org/10.1016/j.energy.2009.11.025
  5. B. Saleh, G. Koglbauer, M. Wendland and J. Fischer, 2007, "Working fluids for low-temperat ure organic Rankine cycles", Energy, Vol. 32,pp. 1210-1221. https://doi.org/10.1016/j.energy.2006.07.001
  6. J.I. Yoon, C.H. Son, S.M. Baek, H.J. Kim, H.S. Lee, 2014 "Efficiency comparison of subcritical OTEC power cycle using various working fluids". Heat and Mass Transfer Vol. 50, pp. 985-996 https://doi.org/10.1007/s00231-014-1310-8
  7. J. I. Yoon, C. H. Son, S. M. Baek, B. H. Ye, H. J. Kim, H. S. Lee, 2014, "Performance characteristics of a high-efficiency R717 OTEC power cycle" Applied Thermal Engineering, Vol. 72, pp.304-308 https://doi.org/10.1016/j.applthermaleng.2014.05.103