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The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Design and Thermodynamic Analysis of Hybrid Tri-generation Gas Engine-Organic Rankine Cycle

하이브리드 Tri-generation 가스엔진-유기랭킨사이클 시스템의 설계 및 열역학적 해석

  • Sung, Taehong (School of Mechanical Engineering, Pusan National University) ;
  • Yun, Eunkoo (School of Mechanical Engineering, Pusan National University) ;
  • kim, Hyun Dong (School of Mechanical Engineering, Pusan National University) ;
  • Choi, Jeong Hwan (KOGAS R&D division New Energy Technology Center) ;
  • Chae, Jung Min (KOGAS R&D division New Energy Technology Center) ;
  • Cho, Young Ah (KOGAS R&D division New Energy Technology Center) ;
  • Kim, Kyung Chun (School of Mechanical Engineering, Pusan National University)
  • Received : 2015.01.02
  • Accepted : 2015.02.28
  • Published : 2015.02.28
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Abstract

In a gas engine, the exhaust and the engine cooling water are generated. The engine cooling water temperature is $100^{\circ}C$ and the exhaust temperature is $500^{\circ}C$. The amount of heat of engine cooling water is 43 kW and the amount of heat of exhaust is 21 kW. Eight different hybrid organic Rankine cycle (ORC) system configurations which considering different amount and temperature of waste heat are proposed for two gas engine tri-generation system and are thermodynamically analyzed. Simple system which concentrating two different waste heat on relatively low temperature engine cooling water shows highest thermal efficiency of 7.84% with pressure ratio of 3.67 and shaft power of 5.17 kW.

Keywords

References

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