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http://dx.doi.org/10.6110/KJACR.2014.26.4.158

Experimental Investigation on the Performance of a Scroll Expander for an Organic Rankine Cycle  

Sung, Min-Je (Department of Mechanical Engineering, Graduated School, Kookmin University)
Ahn, Joon (Department of Mechanical Systems Engineering, Kookmin University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.4, 2014 , pp. 158-162 More about this Journal
Abstract
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Amplitude ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to analytic solutions. The result shows that higher amplitude ratio channel gives better heat transfer performance within the range of investigation.
Keywords
ORC; Primary surface heat exchanger; Amplitude ratio; Friction factor; Nu;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 Baik, Y. J., Kim, M., Chang, K. C., Yoon, H. K., Lee, Y. S., and Ra, H. S., 2009, Analysis of HFC-245fa Organic Rankine Cycle for Geothermal Power Generation, Trans. KSGEE, Vol. 5, No. 1, pp. 1-6.   과학기술학회마을
2 KEPCO, 2012, Power Generation, KEPCO in Brief, pp. 45-52.
3 Kim, J. S. and Lee, C. K., 2007, A Study of the Influence of Condensing Water Temperature on Low Temperature Geothermal Power Generation, Trans, KSGEE, Vol. 3, No. 2, pp. 17-23.   과학기술학회마을
4 Park, C. Y., Hong, W. K., and Kim, J. M., 2011, Thermodynamic Efficiencies of Organic Rankine Cycles with a Feed Liquid Heater or Regenerator, Trans, SAREK, Vol. 23, No. 10, pp. 662-669.   과학기술학회마을   DOI   ScienceOn
5 Eom, H. S., Yoon, C. S., Kim, Y. M., Shin, D. G. and Kim, C. G., 2012, Optimization Study on the Performance Analysis of Organic Rankine Cycle for Characteristics of Low Temperature Heat Sources, Trans, SAREK, Vol. 24, No. 1, pp. 51-60.   과학기술학회마을   DOI   ScienceOn
6 Jeong, J. H., Kim, L. S., Ha, M. Y., Kim, K. S., and Cho, J. R., 2008, Various Heat Exchangers Utilized in Gas-Turbine for Performance Enhancement, Int. J. Air-Cond. Ref., Vol. 16, No. 1, pp. 30-36.   과학기술학회마을
7 Kays, W., Crawford, M., and Weigand, B., 2005, Convective Heat and Mass Transfer 4th Ed., McGraw-Hill, USA, pp. 67-129.
8 Utriainen, E. and Sunden, B., 2002, A Numerical Investigation of Primary Surface Rounded Cross Wavy Ducts, Heat Mass Transf., Vol. 38, pp. 537-542.   DOI
9 Jang, I. H., Hwang, S. D., and Cho, H. H., 2004, Effects of Corrugation Angle on Local Heat/Mass Transfer in Wavy Duct of Heat Exchanger, Trans. KSME B, Vol. 28, No. 7, pp. 789-799.   과학기술학회마을   DOI
10 Jang, I. H., Hwang, S. D., and Cho, H. H., 2005, Effects of Aspect Ratio on Local Heat/Mass Transfer in Wavy Duct, Trans. SAREK, Vol. 17, No. 6, pp. 569-580.   과학기술학회마을