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Experimental evaluation of 100 kW grade micro humid air turbine cycles converted from a microturbine

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  • Xu, Zhen
  • Lu, Yuan
  • Wang, Bo
  • Zhao, Lifeng
  • Chen, Changnian
  • Xiao, Yunhan

Abstract

Microturbines have been developed as a candidate for distributed energy and combined heat and power. A 100 kW grade test facility of micro Humid Air Turbine (mHAT) cycle was converted from a commercial recuperated microturbine. The thermodynamic and emission performances of three mHAT concepts were experimentally evaluated at nominal rated output power. The impacts of the aftercooler and part-flow humidification strategy were also discussed. Comparing to the original recuperated microturbine, the specific output power and the electrical efficiency of mHAT increase 23% and 18.9% respectively. Introducing the aftercooler into the mHAT (mHAT+) can improve the specific output power to the maximum value of 31.6%. The part-flow humidification strategy can further improve the electrical efficiency to the maximal value of 22.2% at the split ratio is equal to 0.48 in the experiment range. The minimal NOx emission in tested five cycles decreases 36.8%, but corresponding combustion efficiency shows a 2.2% reduction.

Suggested Citation

  • Xu, Zhen & Lu, Yuan & Wang, Bo & Zhao, Lifeng & Chen, Changnian & Xiao, Yunhan, 2019. "Experimental evaluation of 100 kW grade micro humid air turbine cycles converted from a microturbine," Energy, Elsevier, vol. 175(C), pages 687-693.
    • Handle: RePEc:eee:energy:v:175:y:2019:i:c:p:687-693
    DOI: 10.1016/j.energy.2019.03.036
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    Cited by:

    1. Wang, Yuzhang & Zhang, Qing & Li, Yixing & He, Ming & Weng, Shilie, 2022. "Research on the effectiveness of the key components in the HAT cycle," Applied Energy, Elsevier, vol. 306(PB).
    2. Chen, Junjie & Han, Dong & Gao, Sijie & He, Weifeng & Peng, Tao, 2021. "Use of single air extraction and injection to thermodynamically balance the combined heat and mass transfer process," Energy, Elsevier, vol. 224(C).
    3. Xu, Zhen & Lu, Yuan & Wang, Bo & Zhao, Lifeng & Xiao, Yunhan, 2021. "Experimental study on the off-design performances of a micro humid air turbine cycle: Thermodynamics, emissions and heat exchange," Energy, Elsevier, vol. 219(C).
    4. Zhang, Qing & He, Ming & Wang, Yuzhang & Weng, Shilie, 2020. "Analysis of air humidification process for humid air turbine cycle with a detailed air humidifier model," Applied Energy, Elsevier, vol. 279(C).

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