Browse > Article
http://dx.doi.org/10.7842/kigas.2012.16.6.136

Thermodynamic Analysis on the Feasibility of Turbo Expander Power Generation Using Natural Gas Waste Pressure  

Ha, Jong Man (R&D Division, Korea Gas Corporation)
Hong, Seongho (R&D Division, Korea Gas Corporation)
Kim, Kyung Chun (School of Mechanical Engineering, Pusan National University)
Publication Information
Journal of the Korean Institute of Gas / v.16, no.6, 2012 , pp. 136-142 More about this Journal
Abstract
Thermodynamic equations for the electric power and temperature in a turbo expander generator (TEG) using pressure energy in a natural gas line are derived. From the equations, it was shown that dominant factor is not the pressure difference but the pressure ratio. The high energy level in the inlet of TEG can be made from nearly no expense of electric energy input, which means TEG can be treated as one of newly available clean energy source. If a post heating method is chosen to heat up expanded natural gas, the usage of cold energy is possible without a refrigeration cycle. The combined TEG and refrigeration system enhances economic benefit much more.
Keywords
turbo expander; power generation; waste pressure; feasibility; sustainable energy;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Turbo expander-Generators for Natural Gas Applications, GE Energy Oil & Gas, (2008)
2 Low Carbon Technology for a Cleaner World, CryoStar, (2007)
3 Frank Davis, et al., "Full Load, Full Speed Test of Turbo Expander - Compressor with Active Magnetic Bearings", Proceedings of 35 th turbomachinery Symposium, (2006)
4 KOGAS, "Feasibility Study on the Turbo - Expander Power Generation System for Pressure Letdown Station", (2008)
5 J.M. Ha et al, "Turbo Expander Power Generation Using Pressure Drop in Natural Gas Pipeline", KIGAS, Vol.16, No.3, pp.1-7, (2012)
6 Energy Newspapter, "Turbo Expander Power Generation in Natural Gas Pipeline", (2012.4.13)
7 G.J. Wylen and R.E. Sonntag, "Fundamentals of Classical Thermodynamics", Mcgraw-Hill, (1976)
8 M.J. Morgan and H.N. Shapiro, "Fundamentals of Engineering Thermodynamics", John Wiley & Sons, Inc. Mcgraw-Hill 4th ed., (2000)
9 W. F. Stoecker, "Design of Thermal Systems", 3rd ed., McGraw-Hill, (1989)
10 KISTI Global Trend Briefing "Wate Pressure to Electricity", (2007-06-10)
11 Clifford R. Howard, "Hybrid Turbo Expander and Fuel Cell System for Power Recovery at Natural Gas Pressure Reduction Stations", (2009), Master's Degree Theis, Queen's Univ., Canada
12 Randall F. Barron, "Cryogenic Systems", 2nd ed. Oxford University Press, (1985)